14 back end developer jobs found

What if the code you write could directly power the AI systems shaping how millions of people interact with technology? We're looking for Back End Developers across Bristol and the wider UK to design, build, and optimize the server-side systems and APIs that drive cutting-edge AI products — from data pipelines and model-serving infrastructure to scalable microservices that handle real-world traffic at scale. This is a fully remote, flexible contract role. Whether you're a seasoned engineer looking for meaningful project work or a strong developer ready to apply your skills to AI-adjacent infrastructure, this is your chance to build things that matter. Organization: Alignerr Type: Hourly Contract Location: Remote Commitment: 10–40 hours/week What You'll Do Design, develop, and maintain robust back end services, APIs, and data pipelines Build scalable, high-performance server-side architecture to support AI training and inference...

About The Role What if the code you write could directly power the AI systems shaping how millions of people interact with technology? We're looking for Back End Developers based in London to design, build, and optimize the server-side systems and APIs that drive cutting-edge AI products — from data pipelines and model-serving infrastructure to scalable microservices that handle real-world traffic at scale. This is a fully remote, flexible contract role. Whether you're a seasoned engineer looking for meaningful project work or a strong developer ready to apply your skills to AI-adjacent infrastructure, this is your chance to build things that matter. Organization: Alignerr Type: Hourly Contract Location: Remote Commitment: 10–40 hours/week What You'll Do Design, develop, and maintain robust back end services, APIs, and data pipelines Build scalable, high-performance server-side architecture to support AI training and inference...

About The Role What if the code you write could directly power the AI systems shaping how millions of people interact with technology? We're looking for Back End Developers based in London to design, build, and optimize the server-side systems and APIs that drive cutting-edge AI products — from data pipelines and model-serving infrastructure to scalable microservices that handle real-world traffic at scale. This is a fully remote, flexible contract role. Whether you're a seasoned engineer looking for meaningful project work or a strong developer ready to apply your skills to AI-adjacent infrastructure, this is your chance to build things that matter. Organization: Alignerr Type: Hourly Contract Location: Remote Commitment: 10–40 hours/week What You'll Do Design, develop, and maintain robust back end services, APIs, and data pipelines Build scalable, high-performance server-side architecture to support AI training and inference...

Location: Remote first (2-3 days on site in the North East during week one) Start: November 2026 Duration: 3 months initial, 5 days per week Rate: Around £650 per day depending on experience, Outside IR35 Sector: Financial services About the opportunity Crosstide is looking for a hands-on Principal Platform Engineer to join a financial services client building a new Automated Developer Platform on Google Cloud. The platform runs in its own GCP organisation alongside the client's existing estate, and the first teams to adopt it are building savings services in Go, using Kafka and databases. You'll be one of three Crosstide engineers Embedded in the client's small platform team for phase one, a three-month push to strengthen the shared platform services and add observability, developer experience and disaster recovery. This is a hands-on build role, not a design-only one. The team has a strong bias for action, is happy to try things and throw code away,...

Fully remote, outside IR35 contract role until 31/05/2027 - up to £750 per day Reapit - Who are we? Reapit is the original end-to-end business technology provider for estate agencies of all sizes. We've been helping sales and lettings agents build relationships and grow their businesses for more than 25 years. Our technology empowers property professionals across Europe, the Middle East, Australia, and New Zealand to work with buyers, sellers, tenants, and landlords to deliver a dream home experience. Worldwide, over 100,000 agents across more than 15,000 branches use Reapit to run their businesses, manage properties, collect rent, engage clients, and provide outstanding customer service every time. What you'll be doing Reporting to the Director of Engineering, you'll operate as a highly senior, technically hands-on Back End engineer, Embedded into a squad and owning delivery of substantive, cloud-native services end-to-end. Ad-hoc client...

We are an early stage fintech startup building a cross-border lending marketplace connecting emerging-market financial institutions (seeking foreign-currency funding) with lenders in developed markets. Think of us as connecting Tier 1/2 banks in Africa/Asia with mid Tier lenders in the UK and Europe and China. We are pre-revenue, validating product-market fit with anchor users, and now ready to build the MVP. This is a ground-floor opportunity to shape the technical foundation of a marketplace that could scale to billions in annual deal flow. LOCATION: United Kingdom (Remote, flexible hours) THE ROLE We need an experienced senior technologist to design the core architecture of our marketplace platform and ensure a junior/mid-level UK engineer can execute the MVP independently. You will own six concrete deliverables over 12 weeks: Technical architecture document – technology stack, system design, rationale Development framework – Git...

Job Description Job Title - IQA (Internal Quality Assurer) for ICT and Data Apprenticeships Location - Remote working Position - Freelance Reports to - Head of Training and Quality About the Organisation We are an grade 2 ‘good’ national training provider based in Leicester established since 2006. We deliver further education and provide employment opportunities through our Apprenticeships programmes. After recently achieving our OFSTED grade 2 ‘good’ - We are on a mission - to become an Outstanding high performing work-based training provider meeting the needs of each individual learner empowering them to succeed, progress and thrive in their chosen career path. To support employers in providing quality, meaningful learning opportunities for new and existing team members. Our vision is to provide and deliver our training programmes with positive qualification outcomes, by fulfilling legislation and regulation as a minimum...

Job Summary We are seeking a dynamic and passionate Software Engineer to join our innovative development team! In this role, you will play a vital part in designing, developing, and maintaining cutting-edge software solutions that drive our business forward. Your expertise will help craft scalable applications, integrate APIs, and optimize system performance across various platforms. This is an exciting opportunity for someone eager to work with a diverse tech stack and contribute to impactful projects in a fast-paced environment. If you thrive on solving complex problems with code and enjoy collaborating with talented professionals, we want to hear from you! Duties Develop, test, and deploy robust software applications using languages such as JavaScript, Java, C#, Python, C++, Ruby on Rails, C, and VBA. Collaborate with cross-functional teams to gather requirements and translate them into technical specifications for application development. Design and...

  UK Senior Technical Advisor – Fintech Marketplace Platform (3-Month Contract) We are an early stage fintech startup building a cross-border lending marketplace connecting emerging-market financial institutions (seeking foreign-currency funding) with lenders in developed markets. Think of us as connecting Tier 1/2 banks in Africa/Asia with mid Tier lenders in the UK and Europe and China. We are pre-revenue, validating product-market fit with anchor users, and now ready to build the MVP. This is a ground-floor opportunity to shape the technical foundation of a marketplace that could scale to billions in annual deal flow. LOCATION: United Kingdom (Remote, flexible hours) THE ROLE We need an experienced senior technologist to design the core architecture of our marketplace platform and ensure a junior/mid-level UK engineer can execute the MVP independently. You will own six concrete deliverables over 12 weeks:...

Job Description Job Title - IQA (Internal Quality Assurer) for ICT and Data Apprenticeships Location - Remote working Position - Freelance Reports to - Head of Training and Quality About the Organisation We are an grade 2 ‘good’ national training provider based in Leicester established since 2006. We deliver further education and provide employment opportunities through our Apprenticeships programmes. After recently achieving our OFSTED grade 2 ‘good’ - We are on a mission - to become an Outstanding high performing work-based training provider meeting the needs of each individual learner empowering them to succeed, progress and thrive in their chosen career path. To support employers in providing quality, meaningful learning opportunities for new and existing team members. Our vision is to provide and deliver our training programmes with positive qualification outcomes, by fulfilling legislation and regulation as a minimum...

We are an early stage fintech startup building a cross-border lending marketplace connecting emerging-market financial institutions (seeking foreign-currency funding) with lenders in developed markets. Think of us as connecting Tier 1/2 banks in Africa/Asia with mid Tier lenders in the UK and Europe and China. We are pre-revenue, validating product-market fit with anchor users, and now ready to build the MVP. This is a ground-floor opportunity to shape the technical foundation of a marketplace that could scale to billions in annual deal flow. LOCATION: United Kingdom (Remote, flexible hours) THE ROLE We need an experienced senior technologist to design the core architecture of our marketplace platform and ensure a junior/mid-level UK engineer can execute the MVP independently. You will own six concrete deliverables over 12 weeks: Technical architecture document – technology stack, system design, rationale Development framework – Git...

Location: UK-based - Remote (Course Delivered Virtually). Two required visits to the office in London Term: Freelance: 16 weeks, Monday to Friday. Core programme hours are 10:00am – 4:00pm with availability required from 9:00am – 5:00pm Salary: £200 per day Contract type: 16 Weeks Fixed term   Coding Black Females Coding Black Females was established in 2017 to address the underrepresentation of black women in tech. We are a non-profit organisation with the aim to grow and inspire the community of black female developers. We are the largest network of black female developers in the UK.   Mission Our mission is to grow the community of black women in software development and technical roles, from entry level to executive level. We will remove the barriers to enter the industry and progress within roles.   Aim Our main aims are: Build the community by removing barriers, showcasing talent and...

Job Description Job Title - IQA (Internal Quality Assurer) for ICT and Data Apprenticeships Location - Remote working Position - Freelance Reports to - Head of Training and Quality About the Organisation We are an grade 2 ‘good’ national training provider based in Leicester established since 2006. We deliver further education and provide employment opportunities through our Apprenticeships programmes. After recently achieving our OFSTED grade 2 ‘good’ - We are on a mission - to become an Outstanding high performing work-based training provider meeting the needs of each individual learner empowering them to succeed, progress and thrive in their chosen career path. To support employers in providing quality, meaningful learning opportunities for new and existing team members. Our vision is to provide and deliver our training programmes with positive qualification outcomes, by fulfilling legislation and regulation as a minimum...

Job Description: We are looking for a hands-on Microsoft Purview Engineer with strong Data Governance and Data Catalogue experience. The ideal candidate will possess deep expertise in API integrations, configuration management, metadata governance and Azure DevOps, EKS AKS implementation, CI/CD automation. They must be capable of implementing and supporting Microsoft Purview across development and production environments, maintaining configuration repositories and rollback procedures, developing custom connectors, enabling data lineage, documenting manual configurations, and producing comprehensive operational knowledge articles and support documentation. This is a highly technical role requiring strong Azure, automation, governance, and production support experience.   Role Summary We are seeking an experience and expertise in Microsoft Purview, Azure DevOps, Data Governance, and Data Catalog solutions. The successful candidate will be responsible for the...