326 to 350 of 453 API Design Jobs

AI Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
London, United Kingdom
Employment Type
Permanent
Hybrid Build the AI systems our users actually experience. We're looking for a dynamic AI Engineer (5+ years) to design, build, and deploy autonomous, user-facing AI solutions - LLM-powered applications, agentic workflows, and intelligent systems that perform reliably at scale, not just in a demo. What … Degree in Computer Science (or equivalent) with strong AI/ML/NLP foundations Strong Python skills, familiarity with Java/Kotlin, and solid API design experience Hands-on experience with LangChain, LangGraph, and LLM APIs (OpenAI, Anthropic, etc.) Skilled in prompt engineering and orchestrating AI agents/ ...

Mid-level Backend Engineer

Location
Greater London, England, United Kingdom
regulatory burdens. We serve Tier 1 banks across Europe, North America, and Asia. We are looking for a Mid‐level Backend Engineer to help design, build, and scale our regulatory reporting platform. You’ll own features end‐to‐end — collaborating directly with product to shape requirements, and with … week. Some travel may be required. Suade is an equal opportunity employer. All qualified applicants will receive consideration for employment without bias. Responsibilities Design, build, and ship features independently, from technical design through deployment Maintain and lead the improvement of existing features within the application Write efficient, well ...

Power Platform Architect

Location
Greater London, England, United Kingdom
applications. Define and maintain reference architectures, principles, standards and reusable patterns while managing security, data, accessibility, operational and lifecycle risks. Chair or lead proportionate design assurance, record significant decisions and ensure exceptions, risks, technical debt and dependencies have clear owners and treatment plans. Advise leaders on architectural options, benefits … coaching architects and enhancing architecture practices within multidisciplinary environments. Highest-signal resume keywords Technical Architecture Leadership Microsoft Power Platform Expertise Cloud-Based Application Ecosystem Design Architecture Governance and Risk Management Coaching and Professional Development ATS Optimization Keywords Hard Skills Technical Direction Setting Architecture Governance Cloud Architecture API Design ...

SAP CAP & ABAP Developer (m/f) - Remote

Hiring Organisation
1st solution consulting gmbh
Location
United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
troubleshooting Understanding of LLM capabilities and limitations in enterprise contexts Calling AI service APIs from CAP or ABAP (REST/SDK patterns) OData API design, data modelling, and service consumption patterns Ideally SAP AI experience Tasks : Scalable microservices in CAP (NodeJS) on BTP Cloud Foundry - our primary development ...

Software Engineer (Backend)

Location
Greater London, England, United Kingdom
writing readable, testable, and maintainable code. Solid programming skills in at least one backend language (Elixir, C++, Python, Ruby etc). Strong understanding in API design (RESTful or GraphQL). Good understanding in SQL. Willingness to learn new languages/technologies. These are our ideal requirements ...

Senior Product Engineer (£80k-125k + Equity)

Location
Greater London, England, United Kingdom
lead frontend architecture in React and TypeScript, set the quality bar for components, state management, and performance. And you don't stop there. From API design to cloud infrastructure (AWS), you ship complete, polished features end to end, including AI-powered ones built on LLM APIs, prompt engineering ...

Engineering Team Lead - 12 month FTC

Location
Greater London, England, United Kingdom
than on a purely backend squad. Strong commercial C#/.NET experience, with a solid grasp of SOLID, event‐driven architecture and DDD RESTful API design and SQL skills Cloud‐native Azure development Enough frontend fluency to review React/TypeScript work, even if you're not hands ...

Senior Python Engineer: AI Agents & Forecasting

Location
Greater London, England, United Kingdom
LangChain or LangGraph (agent memory, tool calling, state management) Dagster in production (assets, sensors, partitions) or equivalent pipeline orchestration Strong backend fundamentals including API design, async programming, and database modelling You've built systems that had to work reliably at scale, not just pass a demo Experience 5+ ...

Staff Software Engineer (Provenance)

Location
United Kingdom
/CD approach, deploying multiple times per day, and we support a global set of customers who are engineers like us. Key Responsibilities Build: Design, implement, and ship the provenance ingestion service — capable of accepting provenance and attestation payloads from CI/CD systems, public registries, signed bundles … designing pipelines that handle varied, schema-evolving, high-volume payloads reliably and at scale — including robust error handling and observability. Data Modelling: Ability to design storage schemas that efficiently represent signed metadata envelopes, artefact graphs, and queryable relationships. API Design: Experience building and versioning APIs consumed ...

Scala Engineer

Location
City Of London, England, United Kingdom
Responsibilities Help define and deliver the future vision for attribute reputation services, driving simplification and consolidation where appropriate. Design and develop high-volume, high-availability, low-latency backend services. Enhance and optimise existing applications and services. Support incremental re-architecting initiatives to reduce technical complexity and improve maintainability. Develop … clean, testable and maintainable code using Scala and modern engineering practices. Design, build and maintain secure APIs, databases and applications. Collaborate with Product Owners, Business Analysts, Data Engineers and wider technical teams to deliver effective software solutions. Contribute to service support and operational excellence within a "build ...

Hybrid Senior Backend Engineer - Golang & AWS Serverless

Location
Metropolitan Borough of Solihull, England, United Kingdom
Inside Job is seeking a Senior Backend Software Engineer to help build the technology that supports Gymshark's global growth. You will design and deliver scalable back-end services using Golang and AWS serverless patterns, collaborating with Product, Data, Operations and Platform teams. You will own API design ...

Technical Architect

Location
Manchester, England, United Kingdom
tenant architecture. This is a strategic, hands-on architecture role where you'll work closely with engineering leadership to define technical standards, shape platform design and drive the adoption of modern cloud and AI technologies. What you'll do as Technical Architect: Own the platform architecture and technical roadmap … leading the transition to a scalable multi-tenant SaaS platform. Act as the technical design authority, guiding architectural decisions across APIs, integrations, data platforms and cloud services. Define modern solutions across event-driven architecture, AI, orchestration and API strategy, balancing technical excellence with commercial considerations. What ...

Scala Engineer

Hiring Organisation
TALENT INTERNATIONAL UK LTD
Location
United Kingdom
Salary
£600.00 per day
efforts through incremental re-architecting - e.g. reducing the number of technologies that are required to support the pipeline and using managed services where appropriate. Design and develop clean functioning, testable code on the back-end, write effective APIs, develop and manage well-functioning databases and applications with security … Collaborate with the product owner, business analyst, data engineers and the wider teams to ideate software solutions Knowledge and experience Security clearance (SC-level) API design Data analysis Databases AWS suite experience Awareness of Site Reliability Engineering and support Skilled at returning services to good states in outage ...

Senior Go Microservices Engineer

Location
Cambridge, England, United Kingdom
Entrust is seeking a Senior Software Developer (GoLang) in Cambridge for a hybrid role with on-site days. You will design, implement and deploy microservices in GoLang within a cloud-native setup, shaping API design, testing and integration with the cloud ops function. The ideal candidate brings ...

IAM Product Engineer

Location
Greater London, England, United Kingdom
stability. Your responsibilities will be varied and impactful, offering a dynamic and challenging work environment. A fundamental aspect of this position is the design and construction of robust, scalable, and high-performing code. You will be instrumental in building the platform that opens the door to all our current … experience. You are a collaborative Software Engineer with proven professional experience in Javascript/Typescript , React , and Node.JS , you possess a strong understanding of API design , consumption, and client-side logic. You are proficient in writing unit and integration tests and have experience with NoSQL databases like Mongo ...

Backend Engineer London

Location
Greater London, England, United Kingdom
each play a role in shaping Augur’s product, value to customers and culture as we grow. We are looking for someone who can design and build the distributed systems, storage infrastructure, and platform primitives that underpin Augur's sensor integration product. You'll work across the full backend … surface: from stream processing and storage, to API design, data pipelines, and service architecture, in a Rust stack with Python at the platform API boundaries. You'll be responsible for building robust, well-abstracted systems that scale with the demands of a growing integration and customer base ...

Principal Software Engineer - C#

Location
City Of London, England, United Kingdom
Role Overview ICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands‐on delivery of a desktop platform automating and streamlining trading desk workflows. This is a high‐visibility player‐coach role that may evolve to include formal people management. Role Responsibilities … output. Own the technical direction of the ICRV greenfield project, developing high‐performance, scalable, and robust solutions from first principles through to production operation. Design for hard non‐functional requirements: latency and responsiveness budgets as acceptance criteria, crash containment, least‐privilege isolation between sub‐applications. Work effectively with ...

Agent Runtime & Systems - Member of Technical Staff

Location
Greater London, England, United Kingdom
model and tool footprint. This is a high-leverage role tackling complex systems challenges across the entire stack. Runtime, observability tooling, and framework design are three separate specialties. We are glad to hire someone with real depth in a combination of them. What You’ll Build Design … handoffs, state changes, and runtime decisions Develop clear Python APIs, libraries, and DSLs with stable extension points for tools, backends, and new execution models Design scheduling, placement, backpressure, resource accounting, sandboxing, permissions, and isolation for secure tool execution at scale Develop tooling for trajectory collection and visualisation, performance profiling ...

Principal Software Engineer - C#

Location
Greater London, England, United Kingdom
executes complex, multi-leg synthetic strategies on behalf of institutional clients.**Role Overview**ICRV are seeking an exceptional Principal Engineer to own the architecture, design and hands-on delivery of desktop platform automating and streamlining trading desk workflows. This is a high-visibility player-coach role: you will apply … output.* Own the technical direction of the ICRV greenfield project, developing high-performance, scalable, and robust solutions from first principles through to production operation.* Design for hard non-functional requirements: latency and responsiveness budgets as acceptance criteria, crash containment, least-privilege isolation between sub-applications.* Work effectively with ...

Senior Consultant - AI Tech Transformation - TC - FS

Location
Birmingham, England, United Kingdom
better working world. Senior Consultant - AI Tech Transformation - TC - FS The opportunity We are seeking a Senior Consultant specializing in generative AI to help design and build GenAI solutions for our clients. This is a hands-on, delivery-focused role: you will build key solution components, support the overall … Responsibilities Build and deliver GenAI solution components: RAG pipelines, prompt orchestration, tool-calling integrations, and APIs. Support the solution architecture and contribute to design decisions within your components. Ensure your components are reliable, secure, performant, and cost-aware. Contribute to delivery execution: implementation, testing, debugging, and resolution of technical ...

Senior Consultant - AI Tech Transformation - TC - FS

Location
Greater London, England, United Kingdom
better working world. Senior Consultant - AI Tech Transformation - TC - FS The opportunity We are seeking a Senior Consultant specializing in generative AI to help design and build GenAI solutions for our clients. This is a hands‐on, delivery‐focused role: you will build key solution components, support the overall … Delivery Build and deliver GenAI solution components: RAG pipelines, prompt orchestration, tool‐calling integrations, and APIs. Support the solution architecture and contribute to design decisions within your components. Ensure your components are reliable, secure, performant, and cost‐aware. Contribute to delivery execution: implementation, testing, debugging, and resolution of technical ...

Head of Platform Engineering

Location
Manchester, England, United Kingdom
than the strategic call Delivery & Execution Work with Product Owners (Buyer and Seller) to translate roadmap items into scoped, sequenced engineering execution Own technical design and implementation choices day to day, operating within established architectural patterns without requiring sign-off for routine work Escalate to Product Owner Heads where … mentoring, performance management Direct experience leading an engineering transformation, restructuring teams, process, or architecture, while keeping a live, revenue-generating platform running throughout Strong API design and system architecture experience Production experience with MySQL, Couchbase or MongoDB, and Redis GCP, deploying and operating live services at scale Experience ...

Game Developer

Location
Greater London, England, United Kingdom
heart of immersive, physical learning and play. You implement the game formats designed by our content team, in close partnership with our engineering and design teams. You combine our many device capabilities to make delightful, surprising experiences: Using audio, voice, display, light, haptics, and sensing of physical objects. … company to be the place where you do your best work: With autonomy, curiosity, optimism, and playfulness. What You’ll Work On Experience Design and Implementation Implement the game formats and experiences our content team designs Turn rough prototypes into robust, replayable experiences Design abstractions that allow ...

C# .NET Developer

Hiring Organisation
Proactive Appointments
Location
Taunton, Somerset, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £45,000 per annum
joining an established team where you’ll have the opportunity to work alongside other Junior and experienced developers, contributing to the design and development of new applications and features, and help maintain and improve existing systems. Responsibilities: Develop, test, and deploy efficient, scalable, and maintainable applications using C# … . 2 – 5 years of professional experience in backend development. Strong proficiency in C# and .NET Core (latest versions). Solid understanding of RESTful API design and integration. Familiarity with CI/CD pipelines and Git for version control and continuous integration. Excellent problem-solving and analytical skills ...

C# .NET Developer – 11851

Location
West of England, England, United Kingdom
joining an established team where you’ll have the opportunity to work alongside other Junior and experienced developers, contributing to the design and development of new applications and features, and help maintain and improve existing systems. Responsibilities: Develop, test, and deploy efficient, scalable, and maintainable applications using C# … . 2 – 5 years of professional experience in backend development. Strong proficiency in C# and .NET Core (latest versions). Solid understanding of RESTful API design and integration. Familiarity with CI/CD pipelines and Git for version control and continuous integration. Excellent problem-solving and analytical skills ...