226 to 250 of 445 Permanent API Design Jobs

Senior Software Engineer

Hiring Organisation
ARC IT Recruitment
Location
Brighton, Sussex, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 Annual
platform. You'll build, measure and tune services running in the cloud and at the edge, and you'll own them from design through to production. You'll be part of a multi-disciplinary team of engineers, SDETs, DevOps, product and UX, releasing several times a day through … Server/T-SQL, including query tuning, indexing and execution plans High-traffic E-commerce or transactional systems Cloud experience, ideally AWS Strong RESTful API design: versioning, idempotency, caching, OpenAPI/Swagger Production ownership: monitoring and profiling .NET apps (eg Datadog, New Relic, CloudWatch) Daily ...

Java Developer (with Neo4J)

Location
Bolsterstone, England, United Kingdom
Developer with Neo4j Job Type Contract (6 Months) Client/Industry Bank Required: Languages: Java 11+, HTML5, JavaScript Front-End Frameworks: Angular APIs: RESTful API Design Databases: Neo4j, PostgreSQL Testing: Junit, Mockito, Cucumber Building: Maven Tooling: GitHub, JIRA, Confluence, GitHub Copilot The Developer Experience (DevX) Standards and Controls … well as modernising the application and resolving dependency issues. YOUR RESPONSIBILITIES Collaborate with developers, testers and the wider organisation to build and run products Design, develop & implement back-end features as per backlog/priority with a small element of front-end development. Collaborate with the rest ...

Senior Software Developer - Wise Platform

Hiring Organisation
Wise
Location
London, UK
Employment Type
Full-time
work: We're a small team that ships frequently and iterates on real partner feedback. Engineers own features from technical discovery and design through to production support. We work closely with our PM and designer to understand partner needs, and with adjacent teams (API Experience, Account Discovery … identity mapping between partner systems and Wise. The communication layer services between Wise and partners, extending them to handle new case types and workflows. API design for partner-facing endpoints. We care about consistency, documentation, and making them usable without hand-holding. Work with FinCrime, Compliance ...

Senior Software Developer for WP

Location
Greater London, England, United Kingdom
work We're a small team that ships frequently and iterates on real partner feedback. Engineers own features from technical discovery and design through to production support. We work closely with our PM and designer to understand partner needs, and with adjacent teams (API Experience, Account Discovery … identity mapping between partner systems and Wise. The communication layer services between Wise and partners, extending them to handle new case types and workflows. API design for partner-facing endpoints. We care about consistency, documentation, and making them usable without hand-holding. Work with FinCrime, Compliance ...

Engineering Tech Lead - Platform Capability

Location
Greater London, England, United Kingdom
also: Lead, mentor and grow a squad of developers while staying close to the code Treat non-functional requirements as part of the design from the start, not something to deal with before go-live: performance budgets, availability, security, auditability, operability and cost Design and build back … observable and supportable in production, and help run incident response and learning when things go wrong Use AI throughout the software development lifecycle, from design and build through to testing and review Help shape how AI coding agents fit into our engineering workflow, including the guardrails, review standards ...

Platform Capability Tech Lead - Backend & AI

Location
Greater London, England, United Kingdom
also: Lead, mentor and grow a squad of developers while staying close to the code Treat non-functional requirements as part of the design from the start, not something to deal with before go-live: performance budgets, availability, security, auditability, operability and cost Design and build back … observable and supportable in production, and help run incident response and learning when things go wrong Use AI throughout the software development lifecycle, from design and build through to testing and review Help shape how AI coding agents fit into our engineering workflow, including the guardrails, review standards ...

Senior Product Security Engineer

Hiring Organisation
ARM
Location
Cambridge, Cambridgeshire, UK
Employment Type
Full-time
Python and comfortable in scripting (e.g. bash).Proven experience designing, building, and operating backend services or internal platforms in production environments. Strong understanding of API design, service-to-service integration, and backend architecture. Experience working in cloud environments, ideally AWS.Experience with containers and related tooling, for example Docker. ...

Technical Lead

Hiring Organisation
Vanguard
Location
Manchester, UK
Employment Type
Full-time
Responsibilities Technical Leadership Provide expert-level technical direction for the public UKPI web estate — Angular front-ends, Node.js services, and AEM-authored content. Lead design, development, and implementation across the monorepo's apps and shared libraries. Solution Architecture & Governance Define and enforce architectural standards (module boundaries, shared-library design … enhancements. What it takesKey Skills Experience with JavaScript/TypeScript, Angular, HTML, CSS, and modern Node.js; working knowledge of Java. Familiarity with microservice architecture, API design, and integration patterns. Knowledge of AWS services and cloud-based deployment (ECS, CloudFront, CDN/edge concepts). Strong understanding ...

Technical Lead

Location
Manchester, England, United Kingdom
Responsibilities Technical Leadership Provide expert-level technical direction for the public UKPI web estate - Angular front-ends, Node.js services, and AEM-authored content. Lead design, development, and implementation across the monorepo's apps and shared libraries. Solution Architecture & Governance Define and enforce architectural standards (module boundaries, shared-library design … What it takes Key Skills Experience with JavaScript/TypeScript, Angular, HTML, CSS, and modern Node.js; working knowledge of Java. Familiarity with microservice architecture, API design, and integration patterns. Knowledge of AWS services and cloud-based deployment (ECS, CloudFront, CDN/edge concepts). Strong understanding ...

Portfolio Software Full Stack Engineer (Contractor)

Location
Cambridge, England, United Kingdom
candidate will have extensive experience building backend services using Node.js and TypeScript , with a strong understanding of modern software engineering practices, distributed systems and API design. While this is a full stack role, the primary emphasis is on backend development, system architecture and code quality . Experience with frontend … assisted development tools , reviewing both human-written and AI-generated code, and contributing to technical discussions around architecture and system design. Responsibilities Backend Development Design, develop and maintain scalable backend services using Node.js, TypeScript and modern backend frameworks such as Express.js or similar. Design and implement RESTful APIs ...

Senior React & Node Developer (AI & Full Stack)

Hiring Organisation
Infused Solutions Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
£65000 - £75000/annum
part of a small, highly experienced engineering team responsible for transforming ambitious ideas into production-ready software. Working closely with Product, Design and AI specialists, you'll take concepts from whiteboard sketches through to prototypes, proof of concepts, MVPs and ultimately scalable products. If you enjoy solving complex problems … frontend development, backend engineering and cloud technologies to rapidly build and validate new AI-powered products. You'll be heavily involved in architecture, technical design and proof-of-concept development, collaborating directly with stakeholders to transform ideas into working software. This is a hands-on engineering role where ...

Senior Software Developer

Location
Brighton, England, United Kingdom
indexing data for searching. Skills required: At least 8 years’ experience in C# .Net, SQL Knowledge of some queue brokering technology, e.g., RabbitMQ API design experience (preferably .NET 10.0 Web API)/REST-based web services Orleans and Event Store .Net Core Elastic Search (with Kibana dashboards ...

Full Stack Java Engineer

Location
Shefford, England, United Kingdom
nearly 1000 full-time professionals, and our annual growth rate exceeds 25%. Job Description We are looking for a Full Stack Engineer to design, develop, and support scalable cloud-native applications that power Workforce Management (WFM), Customer Experience (CX), and operational business processes. You will use Java … where appropriate for supporting components. The role suits a hands‐on engineer with strong software development fundamentals who can take features from detailed technical design through implementation, testing, deployment, and production support. Experience with Workforce Management (WFM), Customer Experience (CX), or contact center solutions is an advantage Responsibilities: Design ...

Middle Java Developer

Location
Greater London, England, United Kingdom
expertise as it is about analysis. What You'll get to do: Develop, maintain, and enhance microservice applications using Java 21+ and Spring Boot. Design and implement scalable, resilient, and high-performance solutions. Work with relational and OLAP databases, writing efficient SQL queries in PostgreSQL and ClickHouse. Develop code … process complex data structures to/from Kafka. Ensure best practices in microservice architectures, including API design, scalability and security. Collaborate closely with other team members, including DevOps, Front End, Product and QA Participate in code reviews, technical discussions and continuous improvement initiatives. What we’re looking ...

Software Engineer, Core AI Services

Location
Cambridge, England, United Kingdom
Type: full-time We are looking for a passionate Software Engineer to join our Core AI Services team. In this role, you will help design, develop, and scale AI-enabling platform services and public APIs that are secure, reliable, and cloud-native. These services will act as foundational building … across data pipelines, orchestration, and service APIs. Embed robust security controls to protect sensitive data and ensure secure access to AI services. Participate in design reviews, code reviews, and implementation discussions to ensure engineering excellence. Essential requirements Minimum of 2 years professional experience in software engineering, preferably in platform ...

Principal Software Engineer - (.Net, Umbraco Or PHP, Drupal)

Hiring Organisation
TPXImpact Holdings Plc
Location
United Kingdom
Employment Type
Permanent
Salary
£75,000
across our client estate, spanning multiple platforms, hosting environments and codebases. Shape technical solutions for new business, from initial qualification through discovery to solution design and estimation. Lead the architecture of our largest and most complex client projects. Act as the senior technical escalation point for live incidents … client's budget, team and long-term maintenance capability, not to the most interesting technical solution available. You uphold a clear software design philosophy and ensure teams deliver maintainable solutions. You have a clear understanding of simplicity. You define solutions that are simple by design and challenge requirements ...

Senior Full-stack Engineer

Location
Greater London, England, United Kingdom
basis with development team, designers, copy writers and other IT teams. The role develops and presents recommendations from analysis of current solution. Assist in design peer reviews, code peer reviews, build and unit test functional enhancements. Identify areas for code refactoring. Review and contribute to development process and procedures … Defends a recommendation and can confidently support it. Strong organization, communication, and interpersonal skills. Ability to communicate with business and technical audiences and produce design documents suitable for multiple audience types, both client-facing and internal- Must be able to exhibit technical thought leadership and excellent problem solving ability ...

Engineering Lead

Location
Greater London, England, United Kingdom
Production. The successful candidate will ensure that platforms and services are built consistent with industry methodology and standards, and be responsible for the design and solutions for the domain application stack, understanding application integration and E2E flow. They should also be comfortable communicating this at all levels, from senior … technical leadership Experience across the entire solutions development lifecycle from inception, through build to Production You'll appreciate and acknowledge the impact of system design decisions on scalability, resilience, and supportability Experience of API design and architecture patterns Exposure to modern application frameworks (Springboot, Java etc) Knowledge ...

Technology Developer U.S.

Hiring Organisation
Purolator International
Location
Woodbury, New York, United States
Employment Type
Any
Salary
GBP Annual
business processes. You'll work directly with clients to translate requirements into practical software solutions and contribute throughout the development life cycle, from design through deployment and ongoing support. Your work will span existing Microsoft-based applications and future cloud modernization, with C#, ASP.NET MVC, .NET Framework, .NET Core … Woodbury, NY office. The regular schedule is Monday-Friday, 8:30 a.m.-5:00 p.m. EST.This is not a remote role.ResponsibilitiesWhat You'll Do Design, develop, and maintain enterprise-level applications usingC both.NET Frameworkand.NET CoreinMVC architecture. Build and support web applications usingASP.NET MVC,ASP.NET Web Forms, andRazor Pages. Build ...

Senior Software Engineer

Location
Cambridge, England, United Kingdom
company offers highly competitive remuneration, an excellent benefits package and work-life balance including hybrid work. The core requirements: A senior software engineer’s design and coding ability and track record, judgement, mentoring and review skills. Strong commercial-grade C# software development with awareness of modern .NET … language, and establish good patterns and factoring. Microservice development experience – with good service factoring to reduce bloat, increase independence and separate concerns – and RESTful API design and development. Strong communication skills to liaise with colleagues in other product teams. A good technical degree from a top university, backed ...

Senior Software Engineer

Hiring Organisation
ECM Selection (Holdings) Limited
Location
Cambridge, Cambridgeshire, United Kingdom
Employment Type
Permanent
company offers highly competitive remuneration, an excellent benefits package and work-life balance including hybrid work. The core requirements: • A senior software engineer’s design and coding ability and track record, judgement, mentoring and review skills. • Strong commercial-grade C# software development with awareness of modern .NET … language, and establish good patterns and factoring. • Microservice development experience – with good service factoring to reduce bloat, increase independence and separate concerns – and RESTful API design and development. • Strong communication skills to liaise with colleagues in other product teams. • A good technical degree from a top university, backed ...

Full Stack Developer

Location
Manchester, England, United Kingdom
Node.js REST APIs. Write TypeScript across the stack, working within a strict typing culture that leans on the compiler to catch mistakes early. Design and implement REST endpoints following the team’s established API conventions. Work with real-time features as part of the platform’s live-update … hooks and renderingbehaviour, not just general familiarity with acomponentframework. Experience building REST APIs on Node.js. Nice tohave: exposure to schema-first or contract-first API design — Express withOpenAPIor equivalent. Nice tohave: comfort with runtime type validation at trust boundaries — Zod, Yup, or similar. Nice tohave: experience writing unit ...

Full Stack Developer

Location
Belfast City District, Northern Ireland, United Kingdom
Node.js REST APIs. Write TypeScript across the stack, working within a strict typing culture that leans on the compiler to catch mistakes early. Design and implement REST endpoints following the team’s established API conventions. Work with real-time features as part of the platform’s live-update … hooks and renderingbehaviour, not just general familiarity with acomponentframework. Experience building REST APIs on Node.js. Nice tohave: exposure to schema-first or contract-first API design — Express withOpenAPIor equivalent. Nice tohave: comfort with runtime type validation at trust boundaries — Zod, Yup, or similar. Nice tohave: experience writing unit ...

Forward Deployed Engineer

Location
Greater London, England, United Kingdom
Engineer to join our team. This role is ideal for a technically strong, customer-facing engineer who can understand complex customer operations, question requirements, design scalable solutions, and build the systems needed to deploy Didero successfully. You will work directly with customers to understand their end-to-end procurement … understand their procurement, finance, ERP, and operational workflows. Question and clarify customer requirements, identifying the underlying business need rather than blindly implementing requests. Design and build integrations with ERP, procurement, finance, and operational systems. Build backend services, APIs, data pipelines, workflow automations, and customer-specific technical solutions. Partner with ...

Application Developers | Data engineers

Location
United Kingdom
Project description Join Our Team: Innovating Health Care with Cutting-Edge Technology Responsibilities Primary Responsibilities:Design and develop ETL/ELT solutions on Azure Databricks, LakeBase and SparkDevelop, implement, and deploy large scale data pipelines empowering machine learning algorithms, insights generation, business intelligence dashboards, reporting and new data productsDesign … data modeling, data architecture, and ETL/ELT processes to provide quality data and analytics solutions5 + years of experience in Python3+ Experience with API design and lifecycle management (GraphQL, REST, etc.)2 + years Hands-on experience with Redis-backed state management and event-driven processing.2 + ...