Online programming jobs for students punët

Filtër

Kërkimet e mia të fundit
Filtro sipas:
Buxheti
deri në
deri në
deri në
Lloji
Aftёsitё
Gjuhët
    Shteti i punës
    2,000 online programming jobs for students punët e gjetura, me çmimin EUR

    Help me analyse a simple dataset

    €26 (Avg Bid)
    €26 Oferta mesatare
    12 ofertat
    €426 Oferta mesatare
    53 ofertat

    Help me

    €87 (Avg Bid)
    €87 Oferta mesatare
    9 ofertat
    Build an Online Store Ka përfunduar left

    Kjo Osht Websitja me E Re Ne Ballkan <3

    €20 (Avg Bid)
    €20 Oferta mesatare
    5 ofertat
    Build an Online Store Ka përfunduar left

    multi vendor online ecommerce website

    €118 (Avg Bid)
    €118 Oferta mesatare
    12 ofertat
    Build an Online Store Ka përfunduar left

    adversting a beatyfull babies for blue eyes

    €523 (Avg Bid)
    €523 Oferta mesatare
    24 ofertat
    Build an Online Store Ka përfunduar left

    online multivendor ecommerce site

    €2299 (Avg Bid)
    €2299 Oferta mesatare
    3 ofertat
    Build an Online Store Ka përfunduar left

    hi cmvhkz zfjzkljfkldg adlgjladuglad glad ga

    €7 - €17
    €7 - €17
    0 ofertat
    C++ Programming task given Ka përfunduar left

    sjdbsliafhi'oqwja'nc;abjsfpwquhfajdaop'ndowbf9[whd9qjdop'adnABJFP9fhjwqo]jFSO;ABFI[GFHW9QiAJDPN;ASbfdpUHF

    €9 / hr (Avg Bid)
    €9 / hr Oferta mesatare
    1 ofertat
    money earn Ka përfunduar left

    i like online e jobs

    €19 - €19 / hr
    €19 - €19 / hr
    0 ofertat

    srtfsjnfgjfyjtjnhtjnghnttfgfgyhesrtgegsrghrryrthnrdtghrtghsrwtfmu5uj54etyqa3rtw3jn535tnq35r4e5yw4tyw3jn6n67ytb3erq3brtnjwtw4et5tws54m6tws4tws34et64ye4

    €17 - €142
    €17 - €142
    0 ofertat
    dataentry jobs Ka përfunduar left

    srtfsjnfgjfyjtjnhtjnghnttfgfgyhesrtgegsrghrryrthnrdtghrtghsrwtfmu5uj54etyqa3rtw3jn535tnq35r4e5yw4tyw3jn6n67ytb3erq3brtnjwtw4et5tws54m6tws4tws34et64ye4

    €102 (Avg Bid)
    €102 Oferta mesatare
    1 ofertat

    plz teach me how to do these online jobs contact me 0713578888 kjlfgfdigjlfjglkjdflgj gfjgdfugoijfdjg dfgfdoiguodugjdfg gfgjfdjgljfdgkl fglfjgifdgjlfdjgfdjgjdfuglujdf gfdgfdgljfdlg gjfdlgjlkdfkjg fg gfogufdlgjlfd fiuglfdjglk gfgjoiijgjf fjgiljdflkgjdfgjdflkjglkfdkjgoigtutglfdjgldfgjttg gfgolidfugghljglfjdgufogfjgfjlkgfjklgjfd gflkjgfkldjglkfddjgioglfd g gfgos glfdkgj fgjglfdjglfd flgdfiofuglkfdjgjlf fdlfdjglksdfjgskdjglksfdjg fkgjfdlkgjlfg fgjoiugdfjglkjfdlgjldfjg

    €141 (Avg Bid)
    €141 Oferta mesatare
    1 ofertat
    online data entry jobs Ka përfunduar left

    hello sir kmknknjnjnjnjhbhjbjbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

    €7 (Avg Bid)
    €7 Oferta mesatare
    1 ofertat

    As a project, I need assistance in integrating a pretrained image captioning model into another python file, all along with its dependencies. Skills and Experience: - Expertise in Python programming is a must-have. - Proficiency in TensorFlow and Keras is equally essential, as these are the libraries used in the pretrained model. - Besides, knowledge in handling pretrained models, particularly Image Classification models, is highly desirable. Important Note: - The project requires specific versions of TensorFlow. Details regarding these versions will be shared during the discussion phase, so make sure you are comfortable working with various versions of these libraries.

    €7 (Avg Bid)
    €7 Oferta mesatare
    2 ofertat

    I am seeking a meticulous and detail-oriented freelancer for a data entry project. The chosen freelancer will be responsible for entering data onto an online platform. The key responsibilities include: - Enter data accurately and efficiently onto the specified online platform - Arrange data alphabetically The ideal candidate should have: - Proficiency in data entry and data organization - Outstanding attention to detail - Ability to organize data alphabetically - Strong familiarity with online platforms This position is ideal for someone who has a good understanding of data entry onto online platforms and can organize information alphabetically. Your attention to detail and accuracy is paramount.

    €2 / hr (Avg Bid)
    €2 / hr Oferta mesatare
    2 ofertat

    Description: Are you passionate about creating efficient solutions for inventory management? Krizz Retail is looking for a skilled Software Developer to join our team and lead the development of our inventory management software. As a pivotal member of our technology team, you'll spearhead the design, implementation, and optimization of a robust software solution tailored to our retail operations. Responsibilities: Collaborate with stakeholders to gather requirements and translate them into technical specifications. Design, develop, and deploy scalable and reliable inventory management software. Conduct comprehensive testing to identify and resolve any issues or bugs. Optimize system performance for reliability, scalability, and security. Stay abreast of emergi...

    €276 (Avg Bid)
    €276 Oferta mesatare
    3 ofertat

    I'm looking for a skilled professional to help me generate leads for my tutoring services. I focus on tutoring students from Year 1 to 10 in Math and English. Key Requirements: - Lead Generation: The candidate should have a proven track record in generating leads, preferably in the education sector. - Social Media Marketing: Since I currently generate most of my leads through social media, I need someone who is proficient in maximizing this channel for lead generation. - Understanding of Education Sector: An understanding of the education sector and the specific needs of students in Year 1 to 10 will be an added advantage. If you have experience in lead generation, social media marketing, and a good understanding of the education sector, I...

    €234 (Avg Bid)
    €234 Oferta mesatare
    15 ofertat

    ...scrape data from the online gaming industry and compile a list of email contacts for companies within this sector. Key Requirements: - Focus on the Online Gaming Industry: The primary focus of this data scraping project is the online gaming sector specifically. All data should be relevant to companies operating within this industry. - Company Contact Information: The main data that I'm seeking here are email contacts for companies within the online gaming sector. This could include key decision-makers within these companies. Skills and Expertise: - Proficient in Data Scraping: The ideal candidate should have a strong background in web scraping, with prior experience in compiling email lists from online sources. - Industry Know...

    €9 (Avg Bid)
    I garantuar
    €9
    1 kandidaturat

    I am seeking a meticulous and detail-oriented freelancer for a data entry project. The chosen freelancer will be responsible for entering data onto an online platform. The key responsibilities include: - Enter data accurately and efficiently onto the specified online platform - Arrange data alphabetically The ideal candidate should have: - Proficiency in data entry and data organization - Outstanding attention to detail - Ability to organize data alphabetically - Strong familiarity with online platforms This position is ideal for someone who has a good understanding of data entry onto online platforms and can organize information alphabetically. Your attention to detail and accuracy is paramount.

    €4 / hr (Avg Bid)
    €4 / hr Oferta mesatare
    45 ofertat

    Do you know the SMIIRL Desktop counter? These "mechanic" counters are mostly used to display number of likes on Facebook, Instagram or TikTok. However they can be purchased in a "custom edition" where you should be able to monitor a lot of things like how many orders is in line in your online store. I need something so I can get a SMIIRL counter to display number of reviews my online store has on Trustpilot Im in contact with support at who are very helpfull. There are more options available with something called Zapier and JSON

    €34 (Avg Bid)
    €34 Oferta mesatare
    3 ofertat
    Free Locals Jobs 6 ditë left
    VERIFIKUAR

    We need 10,000 to 20,000 data, Uk Amazon Sellers Leads with work email, Postal codes, telephone numbers and websites, and Amazon store links, I do not have any example list to show how the leads should be so please carefully examine and only apply if you can fulfill and provide all the required information and we will also verify the leads as well, and if we like the quality of the data, we will buy 50,000 to 100,000 more leads as well, Make sure to enclose the sample data of UK amazon stores, without sample bid will not be read. As it is urgent and sure I will be looking forward to chat with you soon.

    €2 / hr (Avg Bid)
    €2 / hr Oferta mesatare
    14 ofertat

    I'm looking for a skilled online advertiser who can effectively leverage social media for my brand. The main goal of this campaign is to drive sales through generating orders. These orders should be processed through an online shopping cart. Key responsibilities: - Strategize and execute social media advertising campaigns to increase sales - Focus on generating orders through compelling advertisements - Ensure smooth processing of orders through our online shopping cart Skills and experience: - Proven track record of successful social media advertising campaigns, particularly in the area of driving sales - Expertise in using social media platforms for advertising, particularly for e-commerce - Familiarity with setting up and managing ...

    €45 (Avg Bid)
    €45 Oferta mesatare
    12 ofertat

    I'm looking for an expert in R programming to assist with data analysis and visualization. Your main tasks would include: - Employing R for data analysis. - Generating static reports and graphs from the data. A key part of this role will involve applying different data visualization techniques to ensure the data is communicated clearly and effectively. Skills and Experience: - Proficient in R programming. - Experienced in data analysis. - Skilled in static data visualization techniques. - Understanding of data communication principles. Please note, the complexity of the dataset is not yet determined, so adaptability and problem-solving skills are a big plus.

    €6 - €18
    I vulosur
    €6 - €18
    5 ofertat

    I'm looking for a skilled freelancer who can develop a program for the Click PLC to control a Variable Frequency Drive (VFD) hoist. Key tasks would include: - Implementing a start/stop control which can be manually triggered. - The program needs to possess speed control, allowing adjustments in the hoist's operating speed. - Including direction control within the program functionality would be vital as well. An understanding of PLC programming and specific proficiency with Click PLCs is crucial for this project. Previous experience with VFDs, industrial automation, and manual switch controls would give any potential freelancers a significant advantage.

    €279 (Avg Bid)
    €279 Oferta mesatare
    25 ofertat

    I'm looking for a skilled freelancer who can create a system that automatically downloads building and road data from OpenStreetMap in CSV format on a monthly basis or with a html frontend site, where we can "click" in Downloadbutton. Key requirements: - Automate the retrieval of building and road data from OpenStreetMap - Download the data in CSV format - Set up the system to run the download process on a monthly basis optimizely on html frotend with a download button Format of the csv: ID (from OSM), ZIP, City, District of City, Federal State, District, Street, Housenumber If available the Community and the Code of the Community Ideal skills and experience: - Proficient in OpenStreetMap data retrieval - Programming experience to automate data downloads ...

    €158 (Avg Bid)
    €158 Oferta mesatare
    51 ofertat

    The company Metodo Toddler, company number 1 in Italy that sells English courses for Italians, is looking for a charismatic person to hold group lessons with more than 30 adults. Much better if you have experience in public speaking or experience in front of many people The candidate must necessarily KNOW ITALIAN, to communicate with the students and obviously have a HIGH LEVEL OF ENGLISH. Lessons are from 1 hour. If you think you are charismatic and can entertain more than 30 people to teach them English. We are waiting for you!

    €1500 (Avg Bid)
    €1500 Oferta mesatare
    2 ofertat

    I am looking for a C programmer to develop a simple keylogger detector specifically for Windows and Linux operating systems. The primary use of this tool will be on my personal computer. Key Features and Tasks: - The detector should be capable of detecting and alerting keyloggers' presence on the computer. - The detector can have minimal ui. - the detector can only have manula scanning. Ideal Candidate: - Knowledgable in C programming with significant experience in system security programming. - Familiarity with keylogger behaviors and effective detection methods. - Prior experience in developing security software for Windows and Linux operating systems. The end goal of this project is to ensure my personal computer is fairly safe from keylogge...

    €10 (Avg Bid)
    €10 Oferta mesatare
    4 ofertat

    ...looking for an expert familiar with Fusion 360 to assist in CAD and CAM projects including 3D modelling and product designing. The designs created will be used specifically for manufacturing, thus precision and accuracy are essential. I need this project completed as soon as possible. Ideal Skills and Experience: • Proficiency in Fusion 360 for 3D modeling and product design • Strong technical knowledge of manufacturing processes • Capable of delivering accurate and timely results. Timelines: • The project needs to be completed ASAP. Hence strong time management skills are essential. Please use AUTODESK FUSION 360 for modelling the design. Create 10 parts in which one of the parts should use CNC milling programming and assembl...

    €233 (Avg Bid)
    €233 Oferta mesatare
    10 ofertat

    I am looking for flutterflow developer who knows flutter to work on an AI chat to get the streaming response and display the answer for every question like ChatGPT. ANd also relevant sources for each answer in the pdf viewer in the frontend. Project is half done in Flutterflow and the only work need to be done is getting streaming response from the backend and when source button is clicked needs to display/highlight the same in the pdf viewer. I will also be working alongside Budget: 100 dollars, timeframe 3 days, let me know if you are interested Specific features to include in the app: - Basic chat functionality to allow users to send and receive messages -implement PDFviewer system and highlight relevant chunks Design: - A design for the app is ready and w...

    €242 (Avg Bid)
    €242 Oferta mesatare
    9 ofertat
    Online Form Filler 6 ditë left
    VERIFIKUAR

    I am seeking a proficient freelancer to assist with completing online forms on my behalf. The task involves entering official resume data into the portals of various IT companies. Each form presents unique complexities, requiring the input of diverse official information tailored to the specific requirements of each company. Your role will encompass completing approximately 10-20 forms for IT companies within their designated hiring portals. This project demands precision and adherence to professional standards. If you possess the necessary skills and attention to detail for this assignment, I look forward to discussing further details with you. Thank you.

    €11 (Avg Bid)
    €11 Oferta mesatare
    47 ofertat

    ...UserControl specifically for data display purposes in my application. The main task of this UserControl will be to exhibit photos from 4:3 full format camera and design elements such as images and texts with optional shadow effects. See attached mockup for a better understanding of the task. Key requirements include: - The ability to display a variety of multimedia formats, particularly images and texts. - Image crop and rotate functionality, as users need to be able to interact with the images. - The finished code should also provide a method to be called with a given template and all required Elements in the Template to produce a finished image containing all the images/texts/photos as shown in the template editor. Ideal candidates should have: - Proficiency in C# p...

    €124 (Avg Bid)
    €124 Oferta mesatare
    14 ofertat

    I'm in need of a junior Java developer to assist me in developing a web-based application for my personal use. This will be a great opportunity for someone looking to gain experience in application development. - Key Requirements: - Proficient in Java, C#, HTML, Javascript programming language - Understanding of web-based application development - Ability to troubleshoot and debug code Previous experience with Java, C#, HTML, Javascript is a plus. My main goal is to collaborate and share ideas with someone who shows initiative and creativity. Looking forward to working with you!

    €4 / hr (Avg Bid)
    €4 / hr Oferta mesatare
    21 ofertat

    I'm looking for an expert in R programming to assist with data analysis and visualization. Your main tasks would include: - Employing R for data analysis. - Generating static reports and graphs from the data. A key part of this role will involve applying different data visualization techniques to ensure the data is communicated clearly and effectively. Skills and Experience: - Proficient in R programming. - Experienced in data analysis. - Skilled in static data visualization techniques. - Understanding of data communication principles. Please note, the complexity of the dataset is not yet determined, so adaptability and problem-solving skills are a big plus.

    €6 - €18
    I vulosur
    €6 - €18
    8 ofertat

    I'm in urgent need of an adept Android developer for the prompt creation of an e-commerce application. Essential Features: - Product listings and details: Display a wide range of products with accurate, detailed descriptions. - Shopping cart and checkout: Functional, user-friendly interface to facilitate purchases. - Customer reviews and ratings: Platform for customers to rate and review products, enhancing the shopping experience. 1. At least 2 years of experience in Android application development 2. Proficient in Java or Kotlin programming languages and Android development tools and frameworks 3. Have a certain understanding of mobile application design and user experience 4. If you have published applications for s-/--a--/--l---/-e, I am interes...

    €40 (Avg Bid)
    €40 Oferta mesatare
    13 ofertat

    I'm looking for an expert in R programming to assist with data analysis and visualization. Your main tasks would include: - Employing R for data analysis. - Generating static reports and graphs from the data. A key part of this role will involve applying different data visualization techniques to ensure the data is communicated clearly and effectively. Skills and Experience: - Proficient in R programming. - Experienced in data analysis. - Skilled in static data visualization techniques. - Understanding of data communication principles. Please note, the complexity of the dataset is not yet determined, so adaptability and problem-solving skills are a big plus.

    €6 - €18
    I vulosur
    €6 - €18
    4 ofertat

    I'm looking to open a personal account with a specific focus on online banking. Particular features I require include: - Mobile check deposits - Bill pay services - Money transfers Ideal candidates for this project should have ample experience working in personal banking and financial services. They should also have a thorough understanding of online banking features, such as mobile check deposits, bill pay services and money transfers. Having technical knowledge to effectively implement these services will be crucial to project execution.

    €7 - €17
    €7 - €17
    0 ofertat

    I am looking for a skilled developer or team to create a Python program designed for the efficient detection of surface defects on railway tracks. This tool is essential for ensuring the safety and operational efficiency of rail network covering high-speed and freight tracks. The program needs to be robust, capable of real-time defect detection and analysis, and capable of generating maintenance recommendations. Requirements: - Develop a Python program capable of converting video to images and image enhancement through filter and noise reduction. - It should capable of labeling of images and recognizing various surface defects including cracks, wear, corrosion, fractures, head-checks, wheel burns, rolling contact fatigue (RCF) defects, spells, squats, shelling, and f...

    €5646 (Avg Bid)
    €5646 Oferta mesatare
    11 ofertat

    As I'm planning to venture into the e-commerce business with a focus on electronics, I am looking for a skilled developer to create a professional online store for me. Key Features: - The online store should be designed for selling a wide range of electronics products. - A crucial feature I'm aiming to include is customer reviews on product pages. I believe this will help in boosting consumer confidence and engagement. - The store should be integrated with a secure credit card payment system, ensuring a smooth and secure transaction process for my customers. Ideal Skills: - Proficiency in e-commerce website development and design, with prior experience in creating online stores. - Strong understanding of integrating customer ...

    €152 (Avg Bid)
    €152 Oferta mesatare
    17 ofertat
    Embed 3rd Party Website in iframe 6 ditë left
    VERIFIKUAR

    ...from 3rd party URLs. The primary goal is to enable users to input a URL, pass the text of each page to our backend for translation, and display the translated text seamlessly on the frontend. Key Responsibilities: Web Proxy Server Development: Develop a robust web proxy server that receives user requests, fetches content from 3rd party URLs, and passes the text to our backend for translation. ( reference site - ) Implement secure communication between clients and the proxy server. Integration with Backend Translation Service: Ensure seamless integration with our backend translation service. Pass the text of each page to the backend for translation. User Interface: Designing - NO DESIGN OR UI/UX task to be done by you. Our team will handle that

    €14 / hr (Avg Bid)
    €14 / hr Oferta mesatare
    10 ofertat

    ...stands out to big companies. To achieve this, I'm looking for experienced freelancers who can guide me in the following areas: - Identifying freelance opportunities that match my skill level and academic schedule. - Mentoring on practical accounting tasks, industry-standard software, and effective work strategies. - Networking with professionals and companies in the accounting and tech sectors. - Advancing my understanding of how accounting principles apply to businesses using Google's tools and services. Ideal candidates for this mentorship and guidance project will possess: - A strong background in professional accounting with a track record of working for or with well-known companies. - Experience in mentoring or coaching students or junior acc...

    €17 / hr (Avg Bid)
    €17 / hr Oferta mesatare
    12 ofertat

    I'm in need of someone with proficient typing skills and a keen eye for detail. The task involves filling online forms with basic personal information. Upon completion, these forms will need to be submitted via email. This is a meticulous task requiring accuracy and attention to detail. The ideal freelancer must have: - Skills in efficient and accurate data entry. - Strong proficiency in managing and organizing emails. - Great attention to detail. - Ability to maintain confidentiality. Expectations for the job: - Fill out online forms with provided information. - Submit these forms via email. - Ensure data privacy and integrity during this process. Thank you in advance for your attention to this task.

    €9 / hr (Avg Bid)
    €9 / hr Oferta mesatare
    63 ofertat

    Beyond Trauma - Activating Neuroplasticity for a Triumphant Life Embrace Your Power to Heal, Forgive, and Redefine Your Life in Months, Not Years – A Journey with Neuroplasticity Looking for an exceptional designer to capture the essence of my nonfiction book targeted at adults, with a cover that conveys a strong sense of inspiration. As the first thing potential readers will see, we need a cover that's attractive, engaging, and truly reflects the soul of the text inside. Ideal Skills/Experiences: - Proven experience in book cover design, specifically nonfiction and inspiration genre. - Strong understanding of design principles and techniques. - Demonstrable knowledge of what appeals to an adult audience. - Ability to incorporate innovative and creative ideas in...

    €94 (Avg Bid)
    I garantuar
    €94
    48 kandidaturat

    ...Description: I am looking for a skilled Data Analyst to help develop a system for classifying email messages as SPAM or HAM. This involves downloading data from a public source, processing it to extract and compute various features, and analyzing these to determine patterns indicative of SPAM. Responsibilities: Download email data from a specified public archive. Create R functions to extract and calculate over 20 variables from each email, such as the number of recipients, percentage of capitals, and URL presence. Analyze this data to explore variable relationships and determine SPAM/HAM status. Generate visual representations of the data and analysis findings. Provide a detailed report on the methodologies used, results obtained, and insights gained. Required Skills: R ...

    €137 (Avg Bid)
    €137 Oferta mesatare
    18 ofertat

    We are in need of an experienced UX designer to model an engaging and intuitive web application with experience in designing pleasing and intuitive UX for ecommerce applications. The key functionalities to consider during the development are: - Large Data Presentation: The web app is primarily focused on data presentation, thus needs effective display of product item lists with images. Familiarity with data-centric designs is crucial. - User Interface: The design should cater to both web and mobile platforms, considering different UI components for each context. - Search Functionality: Currently a filter icon appears on top left on smaller screens which when clicked opens a left pane with search filters, in large screens the left pane is always there. this has to change t...

    €281 (Avg Bid)
    I vulosur Konkursi më i mirë
    €281
    5 kandidaturat

    ...currently seeking a dedicated SEO specialist to join our team on a freelance basis. Our goal is to enhance our online visibility and authority in the mental health field. We have an ongoing on-page SEO strategy in place, but we require additional support to improve our off-page SEO. Responsibilities: Develop and implement a robust backlink strategy to increase the number and quality of inbound links to our website. Improve our website's domain authority and overall search engine rankings. Continuously analyze and report on SEO performance and adjust strategies as necessary. Collaborate with our existing SEO team to align on-page and off-page strategies. Recommend and execute improvements for optimizing SEO reach. Requirements: Proven experience in SEO with a focus ...

    €5 / hr (Avg Bid)
    €5 / hr Oferta mesatare
    98 ofertat

    In this exciting project, I'm looking for a freelancer gifted in system integration to apply Arduino-powered robotics interfaced with IoT devices. Your role includes: - Implementing well-structured Arduino programming concepts dedicated to robotics. - Leveraging your strong background in system integration. - Using your extensive experience with IoT devices to smoothly integrate them with the Arduino robotics. A working knowledge of robotics design and construction is beneficial, but not necessary. Only those with proven experience in similar projects, particularly involving Arduino and IoT interconnection, should apply. I'm excited to see your creativity at work on this project.

    €91 (Avg Bid)
    €91 Oferta mesatare
    12 ofertat

    As the key administrator of this program, I need: - A well-built Des...individual participants, and simulate races. - A mechanism to record and sort race times—ranging from fastest to slowest—post-race. This should seamlessly transition into forming divisions or groups. - An efficient system to perform random draw assignments for participants across different race categories. - Automatic placement population after the times are sorted and standings are finalized. - Accurate computation and allocation of prize winnings at the end of each race. Ideal freelancers for this project should be equipped with strong programming skills and experience with creating administratively focused software applications. Familiarity with horse racing and its unique paramete...

    €651 (Avg Bid)
    €651 Oferta mesatare
    65 ofertat