11 api developer jobs found

About Us: ISTARI is a strategic cybersecurity advisory company with a bold vision; to curate the defining cybersecurity ecosystem of our time, uniting enterprise, academia, government, and innovators to build collective resilience. At the heart of this mission, ISTARI helps clients achieve lasting organisational cyber resilience by convening and applying world-class talent, expertise, and innovation through a uniquely powerful network, with ISTARI as the central orchestrator. ─────────────────────────────────────────────────────── The Opportunity: We are seeking an entrepreneurial, AI-native developer to join ISTARI as a contract developer and help transform how we deliver our consulting work. You will be the founding technical resource responsible for building a suite of AI-powered internal tools that dramatically improve productivity across our Advisory practice.   This is not a traditional development role. You will be expected to leverage AI coding...

  About Us We manage some of the UK’s largest and most complex wireless environments, including multiple central London boroughs and Docklands. Across more than 5,000 mast site locations, 2,000 connected buildings and 200+ outdoor networks, our work helps ensure people stay connected where it matters most. Backed by DigitalBridge, we bring together deep telecoms expertise and commercial real estate know-how to deliver long-term impact in the market. We are also proud to be certified as a Great Place to Work , with 82 percent of our people saying it is a great place to work, compared with 54 percent at a typical UK-based company.   The Role At Freshwave , we are looking for an experienced Senior Project Manager to join our delivery team on an initial 6-month day rate contract , with strong potential for extension. This is an exciting opportunity to take ownership of complex indoor mobile and WiFi deployment projects , playing a...

Full Stack (React & .NET) Developer - 9 months Contract Upto £650 Per Day Inside Location: London/Hybrid About the Role: Our capital markets practice is seeking a skilled and motivated Full Stack Developer with strong experience in React and .NET technologies and a passion for building scalable, cloud-native applications to work with a leading investment bank. You will be responsible for designing, developing, and maintaining both Front End and Back End components of our clients enterprise-grade solutions, with a strong emphasis on Azure cloud services. Split is 75% Front End - 25% Back End - Mainly UI Focused. 2-3 Days a week on site in London. Key Responsibilitie Develop and extend Front End UI (React/Node.js) to improve operational visibility Refactor and enhance the data ingestion engine to improve flexibility, configurability, and auditability Build and maintain independent data pipelines to pull data from multiple systems...

Full Stack (React & .NET) Developer - 9 months Contract Location: London/Hybrid About the Role: Our capital markets practice is seeking a skilled and motivated Full Stack Developer with strong experience in React and .NET technologies and a passion for building scalable, cloud-native applications to work with a leading investment bank. You will be responsible for designing, developing, and maintaining both Front End and Back End components of our clients enterprise-grade solutions, with a strong emphasis on Azure cloud services. Split is 80% Front End - 20% Back End - Mainly UI Focused. 2-3 Days a week on site in London. Key Responsibilities Refactor and enhance the data ingestion engine to improve flexibility, configurability, and auditability Build and maintain independent data pipelines for multiple HR systems (Workday, FieldGlass, VNDLY) Develop and extend Front End UI (React/Node.js) to improve operational visibility Support and...

Job Title: Data Scientist Job Location: Canary Wharf (Hybrid- 4 days in office, 1 from home) Contract Length: Until 31/12/2026 Industry: Oil and Energy, Tech Working Hours: 8 per day/40 per week   Role Overview: Design, develop, and maintain production-grade AI applications and services using modern software engineering practices (CI/CD, testing, observability, cloud-native design). Define and implement foundational platforms and tools (e.g., conversational bots, AI-powered search, unstructured data processing, GenBI) that are reusable and scalable across the enterprise. Participate in cross functional team initiatives-embedded projects with business stakeholders-to rapidly build and deploy AI solutions that solve high-priority business problems. Evaluate and integrate existing AI tools, frameworks, and APIs (e.g., LLMs, vector DBs, retrieval-augmented generation, AI agents) into robust applications....

Contract AI Engineer – AI Applications (Databricks)   Inside IR35 | 6 Months | Primarily Remote (Occasional London Travel)   We’re looking for a Data Engineer to join a multidisciplinary team building AI-powered, client-facing applications . This role will focus on developing and optimising data platforms and pipelines that enable advanced analytics and AI capabilities.   You’ll work within an Agile/Scrum delivery team , collaborating with engineers, analysts, and product stakeholders to deliver scalable, high-quality data solutions in a cloud environment.   Key Responsibilities Design and build scalable data pipelines to support AI and analytics workloads Develop and deploy AI pipelines in cloud environments Work closely with engineering and product teams to support AI-driven applications Ensure high standards of data quality, performance, and reliability Contribute to delivery...

About the Role: We are seeking an experienced Senior Software Developer to join our consultancy team, supporting a leading Global banking client. The successful candidate will play a key role in the development and delivery of a new internal Risk Weighted Assets system, working closely with quantitative analysts and engineering teams in a fast-paced, high-performance environment. Key Responsibilities: Develop, and maintain RWA systems for a Tier 1 banking client. Collaborate closely with quantitative analysts (quants) to translate risk models into robust, production-grade software. Architect and deliver high-volume, containerised messaging systems to support Real Time data flows. Contribute to the full software development life cycle, including design, implementation, testing, deployment, and support. Ensure solutions are scalable, resilient, and aligned with enterprise architecture standards. Participate in Agile ceremonies and contribute to...

  About Us We manage some of the UK’s largest and most complex wireless environments, including multiple central London boroughs and Docklands. Across more than 5,000 mast site locations, 2,000 connected buildings and 200+ outdoor networks, our work helps ensure people stay connected where it matters most. Backed by DigitalBridge, we bring together deep telecoms expertise and commercial real estate know-how to deliver long-term impact in the market. We are also proud to be certified as a Great Place to Work , with 82 percent of our people saying it is a great place to work, compared with 54 percent at a typical UK-based company.   The Role At Freshwave , we are looking for an experienced Senior Project Manager to join our delivery team on an initial 6-month day rate contract , with strong potential for extension. This is an exciting opportunity to take ownership of complex indoor mobile and WiFi deployment projects , playing a...

Job Title: Data Scientist Job Location: Canary Wharf (Hybrid- 4 days in office, 1 from home) Contract Length: Until 31/12/2026 Industry: Oil and Energy, Tech Working Hours: 8 per day/40 per week Role Overview: Design, develop, and maintain production-grade AI applications and services using modern software engineering practices (CI/CD, testing, observability, cloud-native design). Define and implement foundational platforms and tools (e.g., conversational bots, AI-powered search, unstructured data processing, GenBI) that are reusable and scalable across the enterprise. Participate in cross functional team initiatives-embedded projects with business stakeholders-to rapidly build and deploy AI solutions that solve high-priority business problems. Evaluate and integrate existing AI tools, frameworks, and APIs (e.g., LLMs, vector DBs, retrieval-augmented generation, AI agents) into robust applications. Champion automation in workflows-from data...

Job Title: Implementation Specialist E-Invoicing Location: London- 1 day Job Type: 6 months- Inside IR35 Role overview Are you looking for a role that will use your problem-solving skills, technical interests, and client communication skills to their full potential? We are seeking Implementation Specialists to join our e-invoicing Professional Services team and lead the technical implementation of our e-invoicing platform with global clients.This is the perfect role for a well-organised, collaborative, and analytical person who wants to grow their career within the software implementation space and work with a varied portfolio of multinational clients. You'll use your technical aptitude, excellent communication skills, and problem-solving abilities to tackle client configuration challenges and ensure the highest level of service. Note: Prior experience with e-invoicing platforms is not required. Comprehensive training on the platform will be provided prior to...

Basic information Location London Business Line Tax & Legal Job Type Contract Date published 09-Feb-2026 Req # 22184 Job description   Job Title:  AI Engineer (contract) Location:  London Hybrid. Travel to the London office 2 days a week Duration:  6 months Contract Start Date:  March 2026   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role We are looking for a  AI Engineer  to join...