1 to 25 of 52 REST Jobs in the City of London

required- 7+ years of experience in Java backend development , preferably in banking or payments environments. Strong expertise in Java 11 or higher , Spring Boot , REST APIs , Hibernate/JPA , and Microservices Architecture . Experience with ISO 20022/SWIFT/SEPA/RTP/ACH message structures and transformations. Familiarity ...

experience with ASP.NET MVC/Web API Familiarity with Entity Framework/LINQ Experience with SQL Server or other relational databases Understanding of REST APIs and microservices architecture Knowledge of Git or other version control systems Strong problem-solving and analytical skills Preferred Skills (Good to Have) Experience with Azure ...

Experience Experience deploying apps to the Apple App Store Knowledge of web security best practices and cyber threat mitigation Familiarity with microservices and REST API architecture Exposure to Infrastructure as Code tools (e.g. Terraform) Experience working with real-time trading or data visualisation platforms Package: Initial 12 month contract (high ...

platforms and services. Maintain data quality, security, and compliance across workflows. What you'll bring: Strong programming skills in Java. Hands-on experience developing REST APIs or microservices with Spring Boot. Experience containerising applications with Docker. Understanding of relational and NoSQL databases. Familiarity with modern data architectures (ETL/ ...

Core Stack: React, Next.js, and TypeScript. Architecture: Micro-frontends (Capla/Vue) and Module Federation. Data: Integrating with Java/Spring Boot services via REST and GraphQL. Cloud & DevOps: Kubernetes (BKS), AWS, and advanced observability (Metrics, Dashboards, Alerts). What You Will Do End-to-End Ownership: Own the design ...

automation testing using Selenium/Playwright/Cypress Proficiency in programming languages such as Java, Python, or C# Experience with API testing (Postman, REST Assured, or similar) Knowledge of testing frameworks (TestNG, JUnit, Pytest, etc.) Familiarity with CI/CD tools (Jenkins, Azure DevOps, GitHub Actions) Good understanding of SDLC ...

scalable backend. What You Bring to the Table React Node/TypeScript/JavaScript Cloud: AWS, Azure, or GCP. APIs: API design and integration (REST & GraphQL). AI Tooling: Confident using AI-boosted environments to ensure quality (Claude or similar). The Cherry on Top If you’ve dabbled ...

problem solving. Comfortable working closely with backend engineers and non-technical stakeholders. Fluent in English, both written and spoken. Desirable Experience integrating with REST or WebSocket APIs. Exposure to backend technologies such as C# or Python. Familiarity with RFQ, OTC, or derivatives trading workflows. Experience working on admin or operational ...

React, Kubernetes & Docker. Experience in building responsive, component based user interfaces using modern front end frameworks. Hands on expertise in API design and development (REST/JSON), including versioning and backward compatibility. Experience with UI testing, component testing, and front end build tooling. Experience in CI/CD pipelines, GitOps ...

supporting production deployments 🧩 What You’ll Bring Strong hands-on experience with Java (9+) Proven expertise in Spring Boot/Spring Framework Experience with REST APIs and microservices architectures Ability to work effectively within existing systems and standards ➕ Bonus Experience Previous banking/financial services background ( ex-LBG a plus ...

time data pipelines and event-driven architectures • Supporting production systems and driving performance improvements 🛠️ Core tech & experience: • Strong Python expertise (Django, FastAPI) • Experience with REST APIs, WebSockets, and real-time data integration • Cloud-native development (Azure preferred) • CI/CD, automated testing, and production support • Hands-on experience with ...

Bring Strong front‐end engineering fundamentals with 3+ years’ web development experience Proficiency in Angular (v20+), TypeScript, HTML, and CSS Experience consuming and integrating REST APIs Familiarity with Git‐based source control and collaborative development workflows Experience working with Azure services, including Azure SQL and cloud‐hosted applications Exposure ...

best practices across customers Required Skills & Experience Technical • Strong full-stack development skills: o Frontend: React, TypeScript, modern web frameworks o Backend: Python, Node.js, REST/GraphQL APIs • Experience with cloud infrastructure (AWS, Azure, GCP) • Familiarity with data pipelines, vector databases, and RAG systems • Understanding of scalable distributed system architecture ...

Sales Cloud) experience Proven background as a Technical Lead/Solution Architect/Solution Engineer Experience with: AWS (Glue, AppFlow) Java development API integrations (REST/SOAP) CI/CD pipelines & cloud deployment (AWS/Azure) Experience working across business requirements/user journeys (BA background beneficial) Strong understanding ...

deployed Canvas Apps and used Dataflows within Power Platform for data integration and transformation. Comfortable setting up connectors and endpoints, including email connectors and REST API integrations. Hands-on with Power Platform Pipelines and/or GitHub CI/CD for promoting solutions to production. Familiar with the Microsoft/ ...

systems What we’re looking for Experience developing applications with .NET/C# Exposure to cloud platforms such as Azure Experience building or consuming REST APIs Understanding of microservices or event-driven architectures Experience working in agile engineering teams Interest in building high-scale transactional systems Mid-Level .NET/ ...

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. ...

Strong understanding of functional programming concepts and idiomatic Scala (immutability, monads; familiarity with Cats or Scalaz is a plus). Experience designing and consuming REST APIs , including JSON validation/serialization (Play JSON, Circe). Proficiency with relational databases (PostgreSQL) and/or NoSQL (MongoDB), including schema design and query ...

operate AI‐first products that deliver measurable value. • Develop and deploy production‐grade AI agents on GCP using ADK, integrating with internal systems via REST and JSON APIs. • Build and maintain robust evaluation and monitoring frameworks, including online and offline testing, A/B experiments and performance dashboards. • Integrate ...

Automate, and Power BI. Experience working in agile or Scrum environments delivering software at scale. Exposure to modern architectures, integrations, and cloud services, including REST APIs and Azure-based tools. Demonstrated use of AI-assisted development tools to accelerate delivery and improve code quality. Strong leadership, communication, and conflict-resolution ...

Analyse and interpret eval results, logs and traces from a live AI product • Develop and maintain Python microservices, AWS Lambda functions, Python packages and REST APIs interacting with AWS Bedrock, OpenSearch, Kendra, DynamoDB, and other services. • Build and maintain Lambda functions, Step Functions, and LLM agents to orchestrate workflows. • Work ...

Technical Expertise (Exceptional Level) 2025+ years in QE engineering, transformation, and automation leadership. Mastery of: o Playwright, Appium, Selenium, Cypress, Java o API Automation (REST Assured, Karate, Postman) o Performance (JMeter, LoadRunner) o Cloud native testing (Azure, AWS, GCP) o Test orchestration, CI/CD pipelines o TDM, environment strategy ...

have the right to work. About you: You have strong software engineering experience across the full development lifecycle You have expertise with backend Python, REST APIs and microservices You have a good knowledge of AWS including Amazon RedShift You have experience with PostgreSQL, DBT, data pipelines, ETL, data modelling, LLMs ...

beyond. Core requirements: 3 plus years of engineering experience Strong in React and comfortable across the full JavaScript and TypeScript stack Backend experience building REST APIs using NestJS or Express Or Python Experience with MongoDB or similar databases Evidence of building independently, for example side projects, startups, open source work ...

Synapse Analytics Azure Data Lake Storage Gen2 SQL Server Databricks Enhancements: Python (PySpark, Pandas) CI/CD (Azure DevOps) Infrastructure as Code (Terraform, Bicep) REST APIs GitHub Actions Desirable: Microsoft Fabric Delta Live Tables Power BI dataset automation DataOps practices What You’ll Bring Professional experience in data engineering ...