201 to 225 of 249 Permanent API Design Jobs

Solution Architect

Hiring Organisation
Artis Recruitment
Location
BS1, Bristol, City of Bristol, United Kingdom
Employment Type
Permanent
Salary
£65000 - £70000/annum + 10% Bonus and Excellent Benefits
translate business requirements into practical technical solutions. Define integration approaches, APIs and data flows between enterprise platforms and business systems. Support architecture governance, technical design reviews and solution assurance activities. Ensure solutions meet security, scalability, resilience and operational support requirements. Work collaboratively with internal stakeholders, delivery teams and third … party suppliers throughout the project lifecycle. Contribute to architecture standards, best practice and reusable design patterns. About You We're looking for an experienced Solution Architect with broad technical knowledge rather than a specialist in a single discipline. You'll be comfortable engaging with both technical and non-technical ...

Principal Cloud Architect: Agentic AI & AWS

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
part of WPP, seeks a Principal Technical Architect to own the design and quality of robust cloud applications and agentic AI platform components. You will lead workshops, govern technical standards, and mentor teams across AWS-based solutions. The role emphasizes hands-on delivery, API design ...

Software Developer

Hiring Organisation
Orchard Recruitment Ltd
Location
Douglas, Isle of Man, United Kingdom
Employment Type
Permanent
Salary
£40000 - £50000/annum
here you will: Build and own a number of projects end to end: backend, deployment, and the day-to-day of keeping them healthy Design systems that are simple to run and simple for the next person to read Work with AI agents as a normal part … Cloud and deployment: you can put a service into production and look after it, not just write the code Solid grounding in system design and engineering principles. You think about failure, data, and maintenance before you think about frameworks Fluent with agentic development. You've built real things with ...

Principal Software Architect

Hiring Organisation
Spectrum It Recruitment Limited
Location
Uxbridge, London, United Kingdom
Employment Type
Permanent, Work From Home
models and integration patterns Reviewing significant technical initiatives and providing architectural guidance across multiple engineering teams Embedding security, resilience, scalability and observability into platform design from the outset Identifying architectural risk, technical debt and platform constraints Partnering with Engineering and Product leadership on strategic technical decisions Influencing engineering teams … experience defining architecture across SaaS, product-led or platform-based environments Experience working across complex, multi-system or distributed technology landscapes Strong understanding of API design, integration architecture and service-oriented systems Cloud architecture experience, ideally within Azure A strong appreciation for security-by-design, resilience, scalability ...

Principal Software Architect

Hiring Organisation
17918
Location
London, United Kingdom
models and integration patterns Reviewing significant technical initiatives and providing architectural guidance across multiple engineering teams Embedding security, resilience, scalability and observability into platform design from the outset Identifying architectural risk, technical debt and platform constraints Partnering with Engineering and Product leadership on strategic technical decisions Influencing engineering teams … experience defining architecture across SaaS, product-led or platform-based environments Experience working across complex, multi-system or distributed technology landscapes Strong understanding of API design, integration architecture and service-oriented systems Cloud architecture experience, ideally within Azure A strong appreciation for security-by-design, resilience, scalability ...

Principal Embedded Software Engineer I

Hiring Organisation
Jobleads-UK
Location
Milton Keynes, England, United Kingdom
their systems.As a Cesium software team member, you will be responsible for software designs from concept through production, including product roadmaps, block diagrams, detailed design and coding, analysis, test, qualification, and in-orbit support. The ideal candidate will have development experience at nearly every level of the software stack … have experience in software testing and high-reliability qualification, as well as software engineering and software project management practices.The successful candidate will present engineering design review materials to our customers and executive team, as well as participate in proposal‐writing efforts. As such, excellent written and verbal communication skills ...

Senior Backend Engineer – AI-Driven, Scalable Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
seeking a Backend Engineer with 5+ years of experience to own end-to-end work on AI-enabled data infrastructure. You will drive API design, data management, and scalable architectures while mentoring teammates. You’ll build with Python on a hybrid setup, collaborating across Product, Data Science ...

AI Integration Engineer

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
Required Active UK SC Clearance (Mandatory — applications without this cannot be considered) Core Engineering: Strong backend development skills (Python, Go, or C++) with solid API design and data pipeline experience AI Tooling: Hands‐on experience integrating LLMs, handling vector databases, and building robust chunking/embedding strategies Secure ...

Senior Software Engineer, UI Players

Hiring Organisation
Jobleads-UK
Location
Cambridge, England, United Kingdom
Embedded Linux or Native Application Development. In‐depth understanding of Linux, tools, libraries, and open‐source development. Proficiency in AI‐Assisted programming. Understanding of API design considerations and trade‐offs. Familiarity with tools and libraries such as Boost, PlayReady, ALSA, DIAL. Experience with memory management and multithreaded development. ...

Lead Full Stack Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
problems end to end. You will bring strong JavaScript/TypeScript experience across frontend and backend development, alongside a clear understanding of API design and relational databases. You have mentored engineers and may already have line management experience, conducting development and performance conversations with maturity and clarity. ...

Agentic AI Engineer

Hiring Organisation
Randstad Technologies Recruitment
Location
Burgess Hill, West Sussex, United Kingdom
Employment Type
Permanent
Salary
£75000 - £80000/annum Market Rate/ Negotiable
Python Engineer to build next-generation autonomous AI agents for a major global financial services hub. You will move beyond basic chatbots to design multi-step reasoning workflows and enterprise-grade Python APIs that let AI interact directly with real-world software tools. Key Responsibilities Agentic Orchestration: Build stateful … workflows using LangGraph or LangChain . API & Backend Engineering: Write robust Python backends enabling LLMs to execute Function Calling and tool-use. Context & Memory: Optimize prompt engineering, context windows, and retrieval systems (RAG). What You Need Strong Python software development experience. Hands-on experience with GenAI frameworks ( LangGraph ...

Quantitative Analyst (Rates Electronic Market Making)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
programming experience. Technology/programming skills in Rust, C++, Java, KDB, Python, and SQL. Experience with messaging and data serialization technologies, market data processing, API design, latency optimization, code testing, build and deployment tools. Experience taking ownership of existing technologies, building new ones, and performing technology migrations. Working ...

Quantitative Analyst (Rates Electronic Market Making)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
programming experience.* Technology/programming skills in Rust, C++, Java, KDB, Python, SQL* Extensive experience in messaging and data serialization technologies, market data processing, API design, latency optimization, code testing, build and deployment tools* Experience in taking ownership of existing technologies, building new ones, and performing technology migrations. ...

Engineering Lead

Hiring Organisation
Jobleads-UK
Location
Stockport, England, United Kingdom
solid backend skills — TypeScript, Node.js/Bun.js, and familiarity with React or comparable front‐end Solid understanding of relational databases (PostgreSQL or similar) and API design — able to review code and architecture meaningfully Familiarity with cloud infrastructure (GCP, AWS) and CI/CD tooling (GitHub Actions or similar ...

Senior Backend Engineer – Enterprise Partner Platform

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Wise Platform in London is seeking a Senior Product Engineer to join the Partner Experience team. You will design, build, and operate backend microservices in Java/Spring Boot to support enterprise partners on the Partner Portal. You will own API design, RBAC and SSO (SAML 2.0 ...

Senior Software Engineer: AI-Driven Platform (London)

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
designing innovative solutions for backend challenges and translating business requirements into technical specifications. Ideal candidates should have strong backgrounds in Java or Kotlin and API design. #J-18808-Ljbffr ...

Senior Fintech Lab Engineer & AI Architect

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
enabled technology stack, developing prototypes and guiding client adoption. You will collaborate with the Lab team and financial services clients, research emerging tools, and design practical solutions that connect data, tools and user intent to automate workflows. The role demands strong engineering and consulting experience, with emphasis on architecture … API design, #J-18808-Ljbffr ...

Full-Stack Engineer

Hiring Organisation
Jobleads-UK
Location
Manchester, England, United Kingdom
deployment, observability, and reliability. Raise engineering excellence and resilience: best practices and automation across code, testing, microservices/APIs, performance, and infrastructure; secure-by-design with threat modeling, logging/monitoring, incident playbooks, and disaster recovery. Partner with product, design, and operations to translate outcomes into measurable technical … building distributed systems and microservices in agile environments (Scrum/Kanban). Deep Java experience (Spring), architectural patterns for scalable, observable, testable systems; strong API design. Strong DevOps practices: CI/CD (e.g., GitLab), automated testing (JUnit/Spock), code reviews, telemetry/observability (Splunk, AppDynamics), containers (Docker ...

Applied AI Engineer

Hiring Organisation
Tenth Revolution Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£150,000 - £190,000 per annum
concept and production-grade AI solutions. Architect, develop and deploy AI-native applications leveraging Large Language Models (LLMs), agentic systems and multimodal AI technologies. Design, build and orchestrate intelligent agent workflows using the Gemini Enterprise Agent Platform, Agent Development Kit (ADK) and Agent2Agent (A2A) protocol. Develop and implement Retrieval … using modern front-end technologies such as React, Next.js and Svelte. Build robust backend services, APIs and orchestration frameworks to support AI-powered applications. Design and manage data architectures across SQL, NoSQL and vector database environments. Collaborate with business stakeholders to identify, prioritise and deliver AI use cases that ...

Business Systems Architect

Hiring Organisation
Proactive Appointments
Location
Truro, Cornwall, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £60,000 per annum
business but actively drives growth, efficiency and competitive advantage. The Opportunity This is a strategic, hands-on architecture role where you'll lead the design, integration and optimisation of critical business systems while influencing the organisation's long-term technology roadmap. You'll take ownership of enterprise applications, system … What You'll Be Doing Enterprise Systems & Architecture Lead the architecture, administration and continual improvement of the company's ERP platform (IFS Cloud). Design and deliver scalable system architecture that supports future business growth. Develop and maintain secure API integrations between internal systems, legacy applications and third ...

Head of Engineering

Hiring Organisation
Jobleads-UK
Location
Manchester, England, United Kingdom
calibre team of Software Developers and DevSecOps engineers working on a microservice architecture running on Kubernetes in AWS. It's built following strict functional design principles, TDD and CI/CD pipelines to automatically deploy to production. You’ll combine people leadership with technical evolution of the platform through …/CD practices. Are experienced with AWS and infrastructure as code (e.g., Terraform). Have knowledge of event-driven architecture and API design. Feel confident to jump into different aspects of our code base, orient yourself and remove blockers for the team Are motivated to coach and develop engineers ...

AI‐Native Engineering Lead – Open Banking & Hybrid

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Yapily is seeking an experienced Technical Software Engineering Lead to drive design, development and delivery of core microservices. You will blend hands-on coding with architectural oversight and people leadership to enable an AI-enabled engineering culture and faster developer velocity. You will own architectural decisions, shape APIdesign, ensure system health and collaborate with Product on capacity planning and strategy while mentoring ICs and guiding teams through complex engineering #J-18808-Ljbffr ...

Full-Stack Engineer, Publisher Inventory – London

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Google Software Engineer III, Full Stack, Publisher Inventory in London, UK, is seeking a mid-level engineer to design and implement scalable monetization interfaces. You will work on ad configuration tools and AI-powered features across the stack, collaborating with PMs and UX teams. Experience with Kotlin, C++, TypeScript … Dart or Angular is expected, along with strong API design and cross-platform development skills. #J-18808-Ljbffr ...

Senior Product Manager

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
engineering leadership to influence technical architecture decisions, ensuring solutions are scalable, maintainable, and aligned with platform direction. · Ensure delivery quality through close collaboration with design, engineering, and QA - holding a high bar for what ships. Launch & Growth · Own the end-to-end launch of significant features and capabilities, partnering … card scheme rules (Visa, Mastercard), authorisation and settlement flows, interchange, and regulatory frameworks. · Strong technical fluency - ability to engage with engineering teams on architecture, API design, and system integration decisions. · Demonstrated experience mentoring or coaching other product managers. · Excellent stakeholder management skills with experience influencing senior leaders ...

Software Engineer, Core Networking & Bolt Protocols

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
Networking Engineering Team. You will work on the Neo4j network server modules, drivers, and binary protocol Bolt, shaping connectivity with Neo4j and drivers. Expect design leadership, implementation work, and chances to engage with the community. The role emphasizes 5+ years in Java, network development, and API design ...