26 to 50 of 85 Permanent API Design Jobs

Java / Cloud Technical Lead - London, Wembley

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Permanent
Salary
£75000 - £80000/annum + Benefits
just familiarity, but production ownership. Azure Integration: Proven experience building applications that consume Azure-native services, including Azure Key Vault for secrets, Azure Storage API, and Azure Service Bus for event-driven messaging. DevOps Mindset: Solid understanding of the full CI/CD lifecycle; comfortable reading and contributing … Dockerfiles and GitHub Actions YAML workflows - not as a DevOps engineer, but as a developer who understands the pipeline their code flows through. API Mastery: Deep expertise in RESTful API design principles, OAuth2 authentication flows (including FusionAuth integration), and DMARC-compliant transactional email logic via SendGrid. Duties ...

Lead Java Modernization Engineer - London, Wembley

Hiring Organisation
Adecco
Location
London, United Kingdom
Employment Type
Permanent
Salary
£75000 - £80000/annum + Benefits
just familiarity, but production ownership. Azure Integration: Proven experience building applications that consume Azure-native services, including Azure Key Vault for secrets, Azure Storage API, and Azure Service Bus for event-driven messaging. DevOps Mindset: Solid understanding of the full CI/CD lifecycle; comfortable reading and contributing … Dockerfiles and GitHub Actions YAML workflows - not as a DevOps engineer, but as a developer who understands the pipeline their code flows through. API Mastery: Deep expertise in RESTful API design principles, OAuth2 authentication flows (including FusionAuth integration), and DMARC-compliant transactional email logic via SendGrid. Duties ...

Product Director, Molecule Design Products

Hiring Organisation
GSK
Location
Hertfordshire, United Kingdom
Employment Type
Full Time
assets, ontology, Knowledge Graph/semantic search, data/computing/analysis platforms, and data-powered applications. We are seeking an experienced Director, Molecule Design Products who will be accountable for designing and delivering the road map for molecule design products to support GSK Research and Development. This … role will be pivotal in ensuring a cohesive enterprise level strategy towards molecule design solutions and will ensure our scientists have access to best-in-in-class technology products to improve research productivity and ultimately deliver new medicines for our patients. As the Product Director for Molecule Design ...

Senior Backend Developer JBLE1 NI

Hiring Organisation
Ocho
Location
Belfast, UK
people who bring something new to the team, not just technical skills. What You'll Be Doing As a Senior Backend Developer, you will design, build, and optimise high-quality server-side applications and APIs that power complex digital experiences. Working closely with front-end engineers, DevOps specialists, cloud … building scalable APIs and microservices Hands-on experience with cloud platforms (AWS, Azure, or GCP), including serverless compute Solid understanding of authentication, authorisation, and API security best practices Strong problem-solving skills and familiarity with cloud-native development patterns Desirable Experience with headless e-commerce platforms such as commercetools ...

Java Technical Lead

Hiring Organisation
Michael Page
Location
London, United Kingdom
Employment Type
Permanent
Salary
£80000 - £90000/annum
manage technology teams to deliver high-quality software solutions. Collaborate with stakeholders to understand business requirements and translate them into technical deliverables. Oversee the design, development, and implementation of technical solutions. Ensure best practices in coding, testing, and deployment are followed. Provide technical mentorship and guidance to team members. … modern Java (17+) is non-negotiable. 2+ years leading engineering teams or operating as a tech lead/lead engineer with ownership of design and delivery outcomes. Deep Spring Boot expertise: REST APIs, Spring Security, Spring Data, Spring Cache; proven ability to set patterns others follow. Strong command ...

Principal Artificial Intelligence (AI) Platform Engineer/Architect

Hiring Organisation
WTW
Location
Greater London, United Kingdom
Employment Type
Full Time
their development workflows safely and seamlessly. Acting as both architect and hands-on builder, you will articulate our vision for AI-accelerated development practices, design platforms that embed AI at every phase of the SDLC, and champion adoption across our organization. We are seeking a highly skilled engineer … model) The Role Define and evolve the vision for AI-enabled SDLC practices, translating business and technical strategy into concrete platform capabilities and processes Design and implement scalable AI platform infrastructure (SDKs, frameworks, deployment pipelines) that enables rapid, safe integration of AI into all phases of development—from coding ...

Product Management - Private markets, Charles River Development, Assistant Vice President

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
deliver the roadmap for horizontal platform capabilities serving all private markets asset classes - including core data services, cross-fund analytics, workflow automation, and API infrastructure. Lead initiatives in AI/ML-enabled product features, including document extraction (e.g., fund documents, LP agreements, investment memos), NLP-powered search, and intelligent … reporting cycles. Demonstrated experience owning platform-level or infrastructure product workstreams with high technical complexity. Familiarity with data architecture concepts: data modeling, ETL pipelines, API design, and event-driven systems. Experience with agile development methodologies; strong proficiency with product management tools (Jira, Confluence, Productboard, or similar). Exceptional ...

Integration Developer FTC

Hiring Organisation
itecopeople
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£60,000
using modern cloud-native and streaming technologies. Key Responsibilities Develop event-driven integrations and backend services Build connectors, event-processing services, and data pipelines Design scalable integration patterns, schemas, and event flows Develop CDC pipelines and resilient messaging solutions Improve observability through logging, metrics, and tracing Deploy containerised services … Grafana Required Skills Strong software engineering background Experience building integration or event-driven platforms Kafka, Redpanda, or similar streaming technologies Enterprise system integrations and API design Agile development experience Strong communication and collaboration skills Desirable Skills Go and/or Python CDC pipeline development Azure cloud experience Observability ...

AI Platform/ DevOps Engineer

Hiring Organisation
The Portfolio Group
Location
City of London, London, Castle Baynard, United Kingdom
Employment Type
Permanent
Salary
£70000 - £80000/annum + Benefits
secure, and cost-efficient platform infrastructure that enables AI engineering teams to ship and operate AI products reliably in production. What you'll do Design, build, and operate cloud-native AI platform infrastructure across AWS (Lambda, API Gateway, DynamoDB, S3, CloudWatch) and Databricks Deploy and operate containerised services … workflows, and RAG components Implement observability across AI workloads using CloudWatch, MLflow, and OpenTelemetry - covering latency, throughput, cost, and system health Apply secure-by-design principles including IAM, encryption, network controls, and audit logging Work closely with AI engineers to translate prototypes and proof-of-concepts into production-ready ...

Development Manager

Hiring Organisation
Eclipse IT Recruitment
Location
Bradford, West Yorkshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £60000/annum Plus bens
transition of legacy systems into more flexible, web-based platforms using APIs and industry-standard practices. Technical & Architectural Skills Software architecture and system design Application modernization (legacy-to-web/platform transformation) API design and integration (REST, GraphQL, etc.) Database design and performance optimization Cloud platforms … manage the software development team (including contractors) in collaboration with the current Development Manager, fostering a collaborative and high-performing environment. Architect and design modern, scalable applications and integrations, with a focus on transitioning from legacy platforms to modern solutions. Collaborate with stakeholders and change management teams to gather ...

Product Director, Molecule Design Products

Hiring Organisation
Jobleads-UK
Location
Stevenage, England, United Kingdom
scientists, engineers, and decision‐makers, increasing productivity and reducing time spent on “data mechanics.” We are seeking an experienced Director, Molecule Design Products who will be accountable for designing and delivering the roadmap for molecule design products to support GSK Research and Development. The Director will be responsible … lead a high‐performing team of Product Managers, driving the strategic adoption of Generative AI, LLMs, and autonomous agents to revolutionise how we design molecules. Responsibilities Portfolio Strategy & Vision: Define and champion the overarching product strategy, vision, and roadmap for the entire Molecule Design product portfolio, ensuring alignment ...

Technical Product Manager

Hiring Organisation
WTW
Location
Surrey, United Kingdom
Employment Type
Full Time
vision. Highly Desirable: • Background in Software development, data science, or data engineering. • Exposure to cloud platforms (e.g., AWS, Azure, GCP). • Understanding of API design, microservices architecture, or event-driven systems. • Experience in B2B enterprise software environments with complex stakeholder landscapes. • Product management certification (e.g., CSPO, Pragmatic Institute ...

Senior Software Engineer Java

Hiring Organisation
Get2Talent
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
scalable cloud-native platforms, modern web applications, APIs, and digital services that support meaningful and high-impact programmes. What Youll Be Doing Leading the design, development, and delivery of secure full-stack applications using Java, React, and modern web technologies Building scalable back-end services, APIs, and distributed systems … Java and modern front-end frameworks such as React Previous experience operating at Senior, Lead, or Principal Engineer level Strong understanding of software architecture, API design, and scalable distributed systems Experience building cloud-native applications and working within AWS, Azure, or similar cloud environments Strong knowledge of DevOps ...

Full Stack Developer Java

Hiring Organisation
Get2Talent
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
scalable cloud-native platforms, modern web applications, APIs, and digital services that support meaningful and high-impact programmes. What Youll Be Doing Leading the design, development, and delivery of secure full-stack applications using Java, React, and modern web technologies Building scalable back-end services, APIs, and distributed systems … Java and modern front-end frameworks such as React Previous experience operating at Senior, Lead, or Principal Engineer level Strong understanding of software architecture, API design, and scalable distributed systems Experience building cloud-native applications and working within AWS, Azure, or similar cloud environments Strong knowledge of DevOps ...

Java Full Stack Developer

Hiring Organisation
Get2Talent
Location
Cardiff, South Glamorgan, Wales, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
scalable cloud-native platforms, modern web applications, APIs, and digital services that support meaningful and high-impact programmes. What Youll Be Doing Leading the design, development, and delivery of secure full-stack applications using Java, React, and modern web technologies Building scalable back-end services, APIs, and distributed systems … Java and modern front-end frameworks such as React Previous experience operating at Senior, Lead, or Principal Engineer level Strong understanding of software architecture, API design, and scalable distributed systems Experience building cloud-native applications and working within AWS, Azure, or similar cloud environments Strong knowledge of DevOps ...

Java Full Stack Developer

Hiring Organisation
Get2Talent
Location
Cheltenham, Gloucestershire, South West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
scalable cloud-native platforms, modern web applications, APIs, and digital services that support meaningful and high-impact programmes. What Youll Be Doing Leading the design, development, and delivery of secure full-stack applications using Java, React, and modern web technologies Building scalable back-end services, APIs, and distributed systems … Java and modern front-end frameworks such as React Previous experience operating at Senior, Lead, or Principal Engineer level Strong understanding of software architecture, API design, and scalable distributed systems Experience building cloud-native applications and working within AWS, Azure, or similar cloud environments Strong knowledge of DevOps ...

Engineering Lead, Scale

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
foundational systems that power our embedded finance platform at global scale. The team owns multi‐tenant infrastructure, drives cross‐domain product capabilities, and helps design technical solutions for enterprise customers. Key areas of ownership include: Embedded Finance Platform: Build and maintain the infrastructure powering customers like Rippling, Navan, Qantas … career development. Set technical direction for scalable, reliable backend systems and partner with senior engineers on architecture and design. Ensure high standards for system design, code quality, testing, and operational excellence. Drive improvements across reliability, observability, security, and developer productivity. Work cross‐functionally with product, design, compliance, sales ...

Software Engineer - Transfers (Client Journeys)

Hiring Organisation
Hargreaves Lansdown
Location
Bristol, Avon, South West, United Kingdom
Employment Type
Permanent
requirements Participate in code reviews and contribute to team engineering standards Required Skills & Experience Backend/BFF Node.js with TypeScript AWS Lambda handler development API Gateway - routing, authorizers, request/response handling Middleware patterns for Lambda handlers (e.g. Middy) Working with DynamoDB, Secrets Manager, and SSM Parameter Store RESTful … API design AWS & Infrastructure AWS CDK or SST for infrastructure as code Familiarity with core AWS services: Lambda, API Gateway, DynamoDB, IAM, VPC, SNS Basic understanding of VPC networking - Lambda in VPC, security groups Comfortable reading and modifying existing IaC stacks Testing Unit and integration testing with ...

Solution Architect Martech

Hiring Organisation
Robert Walters
Location
Manchester, Lancashire, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
Computer Applications (B.E./B.Tech or BCA) from a recognised institution; MBA preferred. Strong expertise in enterprise architecture, system integration and scalable solution design across cloud platforms (AWS, Azure, GCP), microservices, API design and DevOps practices. Hands on experience with conversational AI (Kore.AI and similar platforms), intelligent ...

Senior Software Developer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Warrington, Cheshire, North West, United Kingdom
Employment Type
Permanent
Salary
£70,000
working with an exciting organisation that is looking to appoint a Senior Full Stack Developer to help design and deliver secure, cloud-native applications within a modern Microsoft and Azure ecosystem. This is an excellent opportunity for an experienced full-stack engineer who thrives in structured architectural environments … maintaining unit and frontend tests (NUnit and ViTest) Contributing to CI/CD pipeline improvements and secure deployment practices Participating in architecture and technical design reviews Ensuring all development aligns with OWASP security best practices Tech Stack & Environment Core technologies: .NET 10/ASP.NET Core Angular 21 (mandatory) DevExpress ...

Lead Developer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Warrington, Cheshire, North West, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£80,000
manual test strategies Documenting architectural decisions (ADRs) and maintaining clear technical communication Tech Stack & Experience Core technologies: .NET 10/ASP.NET Core Web API Entity Framework Core with Azure SQL .NET MAUI (offline-first mobile design) Microsoft Azure (App Services, Azure SQL, Blob Storage, Key Vault, Application Insights … They're Looking For 7+ years' commercial software development experience At least 2 years in a leadership position Strong expertise in modern .NET and API design Proven Angular experience (v15+) Hands-on Azure architecture and deployment experience Strong understanding of CI/CD and enterprise DevOps practices Experience ...

Digital Senior Full Stack Engineer

Hiring Organisation
Leeds Building Society
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
make a difference You'll take technical ownership of customer-facing solutions, working across React/TypeScript and .NET/C# to design, build, test and run reliable, secure and scalable services. You'll lead complex technical delivery, champion modern engineering practices and help shape high-quality solutions through … testing. CI/CD craftsmanship (Azure DevOps/GitHub Actions or similar) with quality gates and environment parity. Proven record designing scalable, resilient systems; API design/versioning; clean architecture and DDD experience. Track record mentoring engineers and leading code/design reviews; uplifting test automation ...

Senior Ruby Engineer - £110K

Hiring Organisation
Run-Time Group Ltd
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Permanent
fast-moving, product-centric environments. Key requirements: Ruby & Ruby on Rails Full-Stack Engineering: JavaScript, TypeScript, React, Hotwire, Stimulus Node.js & React exposure beneficial API Design: REST, GraphQL, external integrations Data Stores: PostgreSQL, MySQL, Redis, Elasticsearch Async Processing: Sidekiq, Resque Cloud & DevOps: AWS, Heroku, Docker, CI/CD pipelines … Testing & Quality: RSpec, Capybara, TDD methodologies Security, performance tuning, and system hardening AI & LLMs: API integration, prompt engineering, AI-enhanced features and developer tooling Responsibilities: Provides hands-on technical leadership to engineering teams (515 people), including mentoring, code review, and architectural direction. Owns end-to-end system architecture, ensuring ...

Manager - Lead AI Engineer

Hiring Organisation
Anson Mccade
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£70,000
building and knowledge-sharing initiatives Skills & Experience Required Significant senior backend development experience with strong Python proficiency (async programming, concurrency, multithreading) Expertise in RESTful API design, OpenAPI/Swagger documentation and API lifecycle best practices Hands-on experience with ML libraries: PyTorch, PySpark, scikit-learn, Hugging Face … machine learning, cloud computing or data engineering highly advantageous Professional accounting qualification desirable but not required Nice to Have Experience with Microsoft Graph API Background in audit, financial services or regulated industry technology What's on Offer A competitive salary and benefits package, flexible hybrid working across 20+ ...

Software Engineer C#, React, .NET

Hiring Organisation
RX Global
Location
Greater London, United Kingdom
Employment Type
Full Time
.NET/C#,, NET Core and familiarity with SQL or data skills Proficiency in Front end tech stack React or Angular Understanding of system design, domain modelling, and API design principles Experience writing unit and integration tests and working with CI/CD pipelines Exposure to cloud ...