1 to 25 of 962 REST Jobs in London

Software Developer | Capital Markets

Location
Greater London, England, United Kingdom
Linux Tools/Technologies/Infra : NodeJS, cloud/AWS, RabbitMQ, AMQ, Mongo, Bitbucket (Git), SQL/Server, Jira Design : API, HTTP/REST, JSON, micro-services and distributed systems SDLC : Agile, Scrum, Kanban, DevOps, CI/CD, Automation First, BDD/TDD, DORA. Understanding of, and advocacy for, Agentic ...

full stack developer for cloud-native applications

Location
Greater London, England, United Kingdom
technologies within Agile delivery teams; Must be eligible for obtaining and maintaining UK SC Clearance; Proficiency in C# and .NET (ASP.NET Core), React, TypeScript, REST API development, SQL Server, Entity Framework and Microsoft Azure; Experience with Azure App Service, Azure Functions, Azure Service Bus, Azure SQL, Azure Storage, Microsoft Entra ...

Senior Fullstack Engineer (Python + React.js)

Location
Greater London, England, United Kingdom
Integrate models into backend systems and create API endpoints for model interaction (e.g., retrieving predictions). Develop and maintain scalable services, e.g. Microservices utilising REST, gRPC, or GraphQL, ensuring optimal performance and seamless integration. Optimize database queries and schemas to improve performance, scalability, and reliability. Implement security features, including authentication ...

Senior Engineering Manager Software engineering London

Location
Greater London, England, United Kingdom
balance new features against architectural health. Excellent time management and proactive problem-solving skills. Technologies we work with Back end (primary): .NET/C#, REST APIs, event-driven and microservice architectures. Front end: React, TypeScript. Machine learning: Python, model training and serving, and the infrastructure to run models in production. ...

Sr. Technical Lead / Architect

Location
Greater London, England, United Kingdom
development with React JS, JavaScript (ES6+), and TypeScript; intermediate knowledge is sufficient; Familiarity with state management using Redux or Context API and experience integrating REST APIs into front-end applications; Good knowledge of SQL and experience working with relational databases such as PostgreSQL, SQL Server, or MySQL; Experience working with ...

Senior Front-End Developer (React, TypeScript) - VP, FX Options Pricing

Location
Greater London, England, United Kingdom
Angular or Vue.js would also be considered). Inter-Application Communication: Solid understanding of building applications that handle real-time data, using technologies like REST APIs, WebSockets , or middleware (e.g., Solace, Kafka, TIBCO). Engineering Excellence: Proficiency in modern software engineering practices, including CI/CD, automated testing, application resiliency ...

C# Developer

Hiring Organisation
Source Group International
Location
London, UK
Employment Type
Full-time
with relational databases (SQL Server preferred), including schema design, query optimisation and stored procedures where appropriate. Integrate with internal and third-party systems using REST and messaging patterns. Write clean, testable code; create unit and integration tests and support automated CI/CD pipelines. Participate in code reviews, technical design ...

Senior Engineering Manager

Hiring Organisation
Checkout.com
Location
London, UK
Employment Type
Full-time
balance new features against architectural health. Excellent time management and proactive problem-solving skills. Technologies we work withBack end (primary): .NET/C#, REST APIs, event-driven and microservice architectures. Front end: React, TypeScript. Machine learning: Python, model training and serving, and the infrastructure to run models in production. Data ...

Senior Python Developer/ Engineer

Location
City of Westminster, England, United Kingdom
client stakeholders to translate business requirements into robust technical solutions. Design and implement integrations with internal client systems and external third-party APIs using REST, webhooks, and event-driven integration patterns. Apply software engineering best practices, including SOLID principles, Clean Architecture, Repository Pattern, Factory Pattern, Strategy Pattern, Dependency Injection ...

Data Engineer (Java Skills)

Location
City of Westminster, England, United Kingdom
following would be beneficial: Cloud platforms such as AWS, Azure or GCP. Docker and containerised environments. CI/CD pipelines and automated deployment. REST APIs and microservices. SQL and relational or NoSQL databases. Data streaming and real-time processing. Infrastructure-as-Code or DevOps tooling. Working within large-scale enterprise ...

Engineering lead

Location
Greater London, England, United Kingdom
technology controls. Support production readiness reviews and regulatory initiatives. Required Technical Skills Engineering & Architecture Java/GoLang/.NET/Python Microservices Architecture REST APIs Event-Driven Architecture Domain Driven Design (DDD) Cloud Platforms AWS/Azure Kubernetes Docker OpenShift DevOps & Automation Jenkins GitHub/Bitbucket Terraform Ansible CI/ ...

Senior Software Engineer

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
Engineering (Web & APIs) 4+ years of production experience with modern Web stacks (TypeScript, React, Node.js, or Python/FastAPI). Strong API design experience (REST, GraphQL, gRPC, WebSocket) and relational/non-relational database design (PostgreSQL, SQLite). 3. Systems & Mobile Architecture (Android ART) Proficiency in Kotlin or Java ...

QA Engineer - PA26Q3QAJH101

Hiring Organisation
SS&C Technologies
Location
London, UK
Employment Type
Full-time
Experience developing automated test frameworks using C# (.NET) (preferred) or Java, with Behaviour Driven Development frameworks such as SpecFlow or Reqnroll. Strong experience automating REST API and UI testing using tools such as Playwright, Selenium WebDriver, or similar technologies. Knowledge of CI/CD pipelines, GitHub Actions, version control ...

Manager - DE - Technology Consulting - FS

Location
Greater London, England, United Kingdom
compliance and operational requirements into pragmatic technical designs. Required skills Skill Area Technologies/Capabilities Engineering leadership Java, Spring Boot, .NET or Node.js, microservices, REST APIs, event-driven architectures, OpenAPI/Swagger, integration patterns Front-end engineering Data & integration SQL, NoSQL, data integration, streaming/event platforms such as Kafka ...

Test Automation Engineer

Hiring Organisation
NTT DATA
Location
London, UK
Employment Type
Full-time
roles Strong programming skills in Java or Python Experience with UI automation tools such as Selenium, Playwright, or Cypress Strong API automation experience using REST Assured, Postman, or similar tools Knowledge of BDD/TDD frameworks (Cucumber, TestNG, JUnit, PyTest) Hands-on experience with CI/CD pipelines Familiarity with ...

Senior Software Engineer

Location
Greater London, England, United Kingdom
design principles, and enterprise application architecture.Proven experience designing and building RESTful services and microservices-based solutions.Strong experience with Java 17, Spring Boot, Kafka, PostgreSQL, REST APIs, and event-driven architectures.Good understanding of frontend integration patterns and experience collaborating across user interface and backend delivery teams.Strong knowledge of Agile delivery methodologies ...

Principal Cloud Engineer (Terraform), London

Location
Greater London, England, United Kingdom
equivalent orchestration, Data Lake/Apache Iceberg, and advanced SQL for large‐scale transformations. Microservices & APIs: experience building modular, production‐grade microservices and REST APIs using Python (FastAPI, Flask, or equivalent); understanding of service design principles including versioning, fault tolerance, and observability. Cloud platforms: working knowledge of cost and usage ...

Senior Full Stack Engineer - Vialto Rewards -

Hiring Organisation
Vialto Partners
Location
London, UK
Employment Type
Full-time
patterns, and operational best practices. Contribute to system architecture and technical design for multi-country payroll, compensation, and equity domains, including integration patterns using REST, file-based feeds, and event-driven approaches. Own production readiness for your work including logging, monitoring and alerting, reconciliation tooling, incident response support, and operational ...

qa engineer (auto) for financial services

Location
Greater London, England, United Kingdom
driven quality engineering Требования Experience developing automated test frameworks using C# (.NET) or Java, with BDD frameworks such as SpecFlow or Reqnroll Experience automating REST API and UI testing with Playwright, Selenium WebDriver, or similar tools Knowledge of CI/CD pipelines, GitHub Actions, version control, and modern software delivery ...

Senior Web3 SDET

Hiring Organisation
R3
Location
London, UK
Employment Type
Full-time
contracts, transactions and wallet integrationsProficient in using test automation frameworks and tools such as: UI Testing: Selenium, Cypress/JavaScript/Typescript, AppiumAPI Testing: REST Assured, Postman, SoapUIBDD Tools: Cucumber, SerenityDatabase TestingSolid experience with CI/CD pipelines and tools (e.g., Jenkins, GitHub Actions)Familiarity with cloud-native architectures ...

Senior Full Stack Developer | React | Angular | Vue (contract)

Location
Greater London, England, United Kingdom
Agile ceremonies. Required Skills & Experience Technical Expertise Strong proficiency in front-end technologies: React/Angular/Vue Solid experience in back-end technologies: REST APIs, GraphQL Strong understanding of databases: Hands-on experience with cloud services, ideallyAzure or AWS. Experience with CI/CD pipelines (GitHub Actions,Azure DevOps ...

Software Engineer – Python/AWS/Terraform (SC or DV Cleared)

Location
Greater London, England, United Kingdom
experience Stronger Python backend development using FastAPI or Flask. Kubernetes or Amazon EKS. DevSecOps and secure-by-design engineering. Observability, monitoring and automated alerting. < REST APIs and distributed systems. Ansible, CloudFormation or AWS CDK. AI or LLM integration. Previous delivery within government, defence or another highly regulated environment. AWS certifications. ...

Principle Engineer

Hiring Organisation
Sanderson Government and Defence
Location
London, United Kingdom
Employment Type
Contract
Experience operating within Agile and DevOps delivery models. Desirable Skills: Application & Integration Technologies C# .NET Entity Framework JavaScript React Vue.js Windows Presentation Foundation (WPF) REST APIs Microservices architecture AI & Data Technologies AWS SageMaker Large Language Model (LLM) integrations AI-assisted analytics solutions Python-based data analysis tooling Architecture & Governance Enterprise ...

Ruby Developer

Hiring Organisation
Solirius Consulting
Location
London, UK
Employment Type
Full-time
Mandatory professional experience with other backend technologies, such as Node.js, Python, Java, or .NET.Strong experience with PostgreSQL/MySQL and database optimisation. Experience with REST APIs, microservices, and distributed systems. Experience with Redis, Kafka, RabbitMQ, or similar backend technologies. Experience with Docker, CI/CD, and at least one cloud ...

Ruby Developer

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent
professional experience with other backend technologies, such as Node.js, Python, Java, or .NET. Strong experience with PostgreSQL/MySQL and database optimisation. Experience with REST APIs, microservices, and distributed systems. Experience with Redis, Kafka, RabbitMQ, or similar backend technologies. Experience with Docker, CI/CD, and at least one cloud ...