13 back end developer jobs found

Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Back End Developer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work...

About us We are GVG (www.gvggroup.com), a growing UK-based asset management and maintenance consultancy, working with clients across infrastructure, utilities and industrial sectors. We are developing a suite of in-house digital tools to support asset data management, maintenance planning and operational performance. The role We are looking for a freelance software developer to support the design and development of internal applications. These tools will be used by our consultants and clients to improve asset data quality, streamline workflows and support decision-making. You will work closely with our team to translate operational requirements into practical, user-friendly applications. Key responsibilities Design and develop web-based applications and tools Translate business and operational requirements into technical solutions Build intuitive user interfaces with a strong focus on usability Develop and manage databases and data models...

Full job description Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Enterprise Software Developer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and...

Full job description Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Data Engineer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team...

Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Application Engineer - AI Trainer to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this...

Freelance Web Developer (Front-End & WordPress) Location: London / Remote Work Model: Flexible & Project-Based Work Type: Freelance / Ongoing Pool Day Rate: Competitive (Dependent on Experience)     About Us: Screen Pilot is an award-winning, integrated marketing agency specialising in the hospitality, travel, and leisure markets, operating globally with offices in the US and UK. Driven by a Smart With Heart philosophy, we deliver tailored customer journeys by combining bold, emotionally resonant creative with advanced data insight and technology.   Our client mix is wide and exciting—from cult hospitality heroes like Perelló and Murano to global names like Marriott, The Atlantis Bahamas, Hyatt, and Meta. We care about craft and impact, and we’re looking for freelancers who bring that same passion to every build.   The Role. We are building a pool of talented Freelance...

Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for proficient programmers to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work alongside a full-time...

  The Role We are growing our network of Freelance Umbraco Developers to support us during our peak periods. If you have a deep understanding of the Umbraco ecosystem and thrive in a fast-paced support environment, we want to hear from you. As a freelancer booked on a project, you will work closely with our Digital Project and Client teams to support, maintain and build high-performance websites. While we are open to freelancers working with us remotely , you must be available to work during UK business hours to collaborate with our project and technical teams. Please note: You will need to be set up as a self-employed freelancer to undertake project work with us. Type: Freelance contract Timings: Flexible Location: Remote Key Responsibilities: Write clean, scalable, maintainable code following team conventions and best practices - our aim is to deliver high-quality code, so it is important to understand best-practice code...

**Project Overview** We have a WordPress website (built in Breakdance) that is approximately 85% complete. Like many projects, it has been built – but not *finished*. We are looking for someone to take this to the **next level and through to completion**. This is not a task-by-task role. This is a **project ownership role**. --- **What We Need** We need someone who will: * Take control of the final stages of the website * Identify what is unfinished, inconsistent, or weak * Fix, refine, and elevate the site so it feels complete and professional * Ensure everything is aligned, consistent, and conversion-focused * Think for themselves and make decisions – not wait for instructions --- **This Role Is NOT:** * A passive “follow instructions” developer role * A build-only task * A “leave it at 90%” job --- **This Role IS:** You acting as the **project lead for finishing this website properly** That...

**Project Overview** We have a WordPress website (built in Breakdance) that is approximately 85% complete. Like many projects, it has been built – but not *finished*. We are looking for someone to take this to the **next level and through to completion**. This is not a task-by-task role. This is a **project ownership role**. --- **What We Need** We need someone who will: * Take control of the final stages of the website * Identify what is unfinished, inconsistent, or weak * Fix, refine, and elevate the site so it feels complete and professional * Ensure everything is aligned, consistent, and conversion-focused * Think for themselves and make decisions – not wait for instructions --- **This Role Is NOT:** * A passive “follow instructions” developer role * A build-only task * A “leave it at 90%” job --- **This Role IS:** You acting as the **project lead for finishing this website properly** That...

Screener Criteria: LinkedIn profile verification required for eligibility Start Date: TBC End Date: TBC Location: Remote (UK/US/CA/AUS) Language Requirement: Fluent English Type of contract: freelance Hourly Rate: $40+/hr Minimum Hours: TBC from Services Maximum Hours: Subject to availability Screening compensation: $46/hr (for eligibility test/screener)   About Prolific Prolific is not just another player in the AI space. We are building the biggest pool of quality human data in the world. Over 35,000 AI developers, researchers, and organizations use Prolific to gather data from paid study participants with a wide variety of experiences, knowledge, and skills.   The role We are seeking Computer Science Domain Experts to act as evaluators for a high-level AI verification project. AI models are now generating complex technical summaries, and we need...

Please submit your CV in English and indicate your level of English proficiency. Mindrift connects specialists with project-based AI opportunities for leading tech companies, focused on testing, evaluating, and improving AI systems. Participation isproject-based, not permanent employment. What this opportunity involves You'll create challenging coding test cases that push AI coding systems to their limits: Review and refine realistic coding tasks based on provided production codebases with realistic scope, requirements and information sources Write comprehensive functional tests that validate actual end-to-end behavior and edge-cases, not just superficial checks Craft "fair but hard " challenges where the AI has all the context it needs, but has to work for it (information scattered across files and external sources, complex reasoning required) Analyze AI failures to understand what the model struggles with vs. what it masters Iterate based on feedback...

**Project Overview** We have a WordPress website (built in Breakdance) that is approximately 85% complete. Like many projects, it has been built – but not *finished*. We are looking for someone to take this to the **next level and through to completion**. This is not a task-by-task role. This is a **project ownership role**. --- **What We Need** We need someone who will: * Take control of the final stages of the website * Identify what is unfinished, inconsistent, or weak * Fix, refine, and elevate the site so it feels complete and professional * Ensure everything is aligned, consistent, and conversion-focused * Think for themselves and make decisions – not wait for instructions --- **This Role Is NOT:** * A passive “follow instructions” developer role * A build-only task * A “leave it at 90%” job --- **This Role IS:** You acting as the **project lead for finishing this website properly** That...