1 to 25 of 48 REST Jobs in the City of London

Back End Developer

Hiring Organisation
Allegis Global Solutions
Location
City of London, London, United Kingdom
Requirements Core Skills 7+ years of experience in backend development. Strong expertise in Java (Core Java, Spring Framework, Spring Boot, RxJava). Experience building REST APIs & reactive Web services. Strong knowledge of microservices architecture. Cloud & DevOps Hands-on experience with Docker, Kubernetes, OpenShift, Helm. Familiarity with CI/CD pipelines ...

Senior AI Automation Engineer

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Permanent
limitations of large language models. Experience with Azure OpenAI, Azure AI Foundry, Copilot Studio or similar platforms would be highly beneficial. Strong experience with REST APIs, GraphQL, authentication and system integration. Experience building reusable services, connectors or internal platform components. Knowledge of CI/CD pipelines, Git workflows, automated testing ...

Cribl Data Analytics Engineer

Hiring Organisation
International Military Ministries
Location
City of London, London, United Kingdom
Employment Type
Contract
requirements. Experience onboarding security log sources. Data & Analytics Strong log analysis and troubleshooting skills. Experience with structured and unstructured data. Knowledge of JSON, Syslog, REST APIs, and common log formats. Experience developing dashboards and reporting solutions. Cloud & Infrastructure Azure and/or AWS experience. Understanding of Windows and Linux environments. ...

Solutions Architect

Hiring Organisation
TESTQ Technologies
Location
City of London, London, United Kingdom
architectures, design, testing & deployment tools, including the following: CI/CD pipeline build & deployment tools Cloud experience (AWS & Azure) and serverless code deployment API (REST), API integration experience and API security experience, including OAuth 2.0 Understanding of even-driven architecture Different deployment methods Understanding of application security principles and practices ...

Lead AI Engineer

Hiring Organisation
Anson Mccade
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
technologies include: Python Azure Databricks Generative AI/LLM frameworks Agentic AI tooling and orchestration frameworks LangChain/LangGraph PyTorch and ML libraries REST APIs Docker and containerisation CI/CD pipelines Git-based development workflows What we're looking for 4-6 years' experience within Software Engineering, AI Engineering ...

Full Stack Developer (.NET)

Hiring Organisation
DGH Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract
Experience - Strong experience building enterprise and web-based applications - Proficiency in C#, .NET/ASP.NET - Front-end skills including HTML5, CSS3, JavaScript - Experience with REST APIs, JSON - Familiarity with Git and modern development tools (e.g. Visual Studio) Desirable Skills - .NET Core/.NET 5+ - Angular, Blazor or modern JS frameworks ...

Full Stack Engineer

Hiring Organisation
Fimador
Location
City of London, London, United Kingdom
with a strong focus on Java developme nt.Experience leading and/or mentoring technical teams within fast-paced, agile environmen ts.Expertise in microservices architecture, REST API development, and securi ty.Understanding of React, Java Springbo ot.Experience with version control (GIT preferred) and cloud platforms like A WS. It would ...

QA Engineer

Hiring Organisation
E-Solutions
Location
City of London, London, United Kingdom
testing event-driven and serverless architectures Test Automation & Tools Experience with: Automation frameworks (Jest framework, Java/Springboot, or similar) API testing tools (Postman, REST clients) Ability to: Create automated test suites Validate JSON-based inputs/outputs for APIs and events Knowledge of: BDD frameworks (Cucumber - good to have ...

SC Cleared Freelance Frontend Fullstack Developer

Hiring Organisation
Opus Recruitment Solutions
Location
City Of London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £650/day
focus to build modern, scalable web applications, with some backend/API work. Tech & Skills JavaScript/TypeScript, React/Angular/Vue Node.js, REST/GraphQL APIs HTML, CSS, responsive & accessible design Testing (Jest/Cypress), CI/CD, Git Experience integrating APIs (AI exposure a bonus) Responsibilities Build ...

Camunda Developer

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
code reviews, and compliance with standards .Hands‐on in Camunda BPM, BPMN/DMN modelling .Strong Java/Spring Boot development experience .Familiar with REST/SOAP integrations, messaging (Kafka/RabbitMQ) .Exposure to Docker, Kubernetes is a plus . ...

Camunda Architect

Hiring Organisation
HCLTech
Location
City of London, London, United Kingdom
driven systems, and legacy syste ms.Strong expertise in Camunda Platform 8/7, BPMN 2.0, D MN.Hands‐on experience with Java/Spring Boot, REST APIs, Kafka, cloud-native microservic es.Strategically support cloud migration and modernization programs involving Camun da.Conduct POCs, evaluate tools, and propose scalable architecture improvemen ts.Mentor technical ...

Principal Java Developer / Consultant

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
strong Java development skills including multi-threading and concurrency You have experience with Spring Boot and microservices environments You have a good knowledge of REST APIs You have a good understanding of AWS You have a thorough understanding of software development and Computer Science fundamentals such as Object Oriented Programming ...

Principal, Enterprise Integration Architect & Application Development

Hiring Organisation
excelerated
Location
City of London, London, United Kingdom
development and engineering leadership experience. Experience integrating enterprise platforms including SAP ECC, S/4HANA, Ariba, Oracle, and SaaS applications. Expertise in API technologies (REST, SOAP), messaging frameworks, and integration security (OAuth, SAML, JWT). Strong knowledge of B2B and EDI standards (ANSI X12, EDIFACT, cXML, IDoc). Demonstrated leadership ...

Senior Android Developer

Hiring Organisation
eTeam
Location
City of London, London, United Kingdom
cause analysis, and impact assessment Skills & Experience Essential: Strong experience with Kotlin (preferred) and/or Java, and the Android SDK Proven experience integrating REST APIs (or similar services) Hands-on knowledge of Google Play Console, app signing, and release management Experience with mobile performance optimisation and secure coding practices ...

Senior C# Engineer .NET 8/9, AWS Lambda, SQS, SNS Outside IR35

Hiring Organisation
Smart Sourcer Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £700 to £800 per day
What Youll Bring: Senior/Staff-level backend mastery in C# and .NET 8/9 , with the ability to architect and lead distributed REST microservices at scale. Strong authority in AWS serverless engineering: Lambda-first mindset, hands-on experience with API Gateway, SQS, Step Functions, EventBridge and IAM. Deep ...

AI Solutions Architect - up to £120K+Benefits - Hybrid/London

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
experience with AI-assisted development tools Strong knowledge of cloud AI and ML platforms and associated architecture patterns Experience designing and managing APIs including REST and GraphQL Strong understanding of microservices and serverless architectures Practical experience with DevOps and MLOps practices including CI/CD pipelines Knowledge of security frameworks ...

Senior C# Engineer - AI Native & Agentic Engineering, AWS, Lambda, SQS

Hiring Organisation
Smart Sourcer Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
From £700 to £800 per day OUTSIDE IR35
What Youll Bring: Senior/Staff-level backend depth in C# and .NET 8/9 , with the ability to architect and lead distributed REST microservices. Strong authority across AWS serverless Lambda-first thinking, plus API Gateway, SQS, Step Functions, EventBridge and IAM. Hands-on experience with Claude Code ...

Solutions Architect, Legal Technology

Hiring Organisation
Brimstone Consulting
Location
City of London, London, United Kingdom
Employment Type
Permanent
Ensure solutions meet security, compliance, and governance requirements Contribute to solution scoping, costing, and technical decision-making Skills & Experience Strong experience with API integrations (REST, JSON, OAuth, event-driven architecture) Background in cloud ecosystems (e.g. Microsoft 365, Azure or similar) Experience with workflow automation tools (e.g. Power Automate, Logic Apps ...

Scala Developer (Remote)

Hiring Organisation
Stealth iT Consulting
Location
City of London, London, United Kingdom
HTTP filters. Solid understanding of functional programming concepts and idiomatic Scala (e.g., immutability, monads, cats/Scalaz familiarity advantageous). Experience designing and consuming REST APIs, JSON validation/serialization (Play JSON, Circe). Experience with relational databases (PostgreSQL) and/or NoSQL (MongoDB), including schema design and query optimisation. ...

C# Developer

Hiring Organisation
Impellam Group
Location
City of London, London, United Kingdom
Required Skills & Experience Essential Expert-level development experience in C#/.NET Strong experience with SQL Server Proven experience working with service-based architectures (REST, gRPC, web technologies) Solid understanding of asynchronous programming and multithreading Experience with messaging middleware (e.g., IBM MQ or similar) Experience working with front office, trading ...

Application Engineer

Hiring Organisation
Comtecs
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
systems); experience with Sharepoint DMS would be fully acceptable here Solid understanding of core integration techniques utilising a range of the following skills SQL, REST APIs, Service Bus and C# (where applicable) Excellent vendor, stakeholder engagement, communication, training and documentation Experience of aspects of product ownership including roadmap development ...

Founding Engineer / Technical Lead

Hiring Organisation
Coburg Banks Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent
transport technology Geospatial systems and location intelligence Technical Environment Experience across several of the following is valuable: Python, TypeScript, Go, Java, or similar REST APIs and distributed architectures AWS and cloud infrastructure PostgreSQL and data-intensive systems Docker, CI/CD, observability, and reliability engineering Third-party integrations and secure ...

Python Developer

Hiring Organisation
Radley James
Location
City of London, London, United Kingdom
similar task queues Experience working with event-driven architectures and messaging technologies such as Kafka, RabbitMQ or Azure Service Bus Strong understanding of REST APIs, microservices architecture and distributed systems design Cloud experience across Azure, AWS or GCP Experience with Docker, Kubernetes and containerised deployments Familiarity with CI/… Stack Python FastAPI/Flask/Django PostgreSQL Redis Celery Kafka/RabbitMQ/Azure Service Bus Docker Kubernetes Azure/AWS/GCP REST APIs Microservices Architecture CI/CD What's on Offer Opportunity to work on cutting-edge AI infrastructure and enterprise-scale systems Highly collaborative engineering ...

Lead Software Engineer

Hiring Organisation
Searchability®
Location
City of London, London, United Kingdom
full software development lifecycle. Key Responsibilities Design, develop and maintain scalable backend applications and APIs using Python. Build and support microservices architectures using REST, GraphQL and gRPC. Deploy, host and manage AI/ML models in production environments, ensuring reliability, scalability and performance. Integrate machine learning models into backend systems … equivalent cloud certifications. Tech Stack Languages & Frameworks Python FastAPI Flask Cloud & Infrastructure AWS Docker ECS Kubernetes Terraform CloudFormation Architecture Microservices Event-Driven Systems REST APIs GraphQL gRPC Databases PostgreSQL MySQL MongoDB DevOps & Monitoring GitHub Actions CI/CD Datadog CloudWatch Security JWT OAuth2 OpenID Connect Microsoft Entra ID What ...

Senior Software Engineer

Hiring Organisation
Burns Sheehan
Location
City of London, London, United Kingdom
with cross-functional teams Play a role in mentoring and coaching junior engineers What are they looking for: Experience in Java, Spring, microservices and REST APIs Good knowledge in front-end development either in Angular or other frontend technologies Experience with testing framework such as TDD Experience contributing ...