1 to 25 of 47 REST Jobs in the City of London

Fullstack Developer

Hiring Organisation
Devonshire Hayes Recruitment Specialists Limited
Location
City of London, London, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £55,000 per annum
Grid Real-time communication using WebSockets or SignalR Strong experience building real-time trading or financial applications Back End C# .NET 8 Python REST APIs/Web APIs Microservices Architecture Messaging & Caching RabbitMQ Redis DevOps & Cloud Azure DevOps Git/Repos CI/CD Pipelines Azure and/ ...

Java + CloudNative

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£65000 - £70000/annum
ReactJS. Cloud & Serverless: AWS Lambda, AWS Cloud Services, Kubernetes. Additional Technical & Functional Competencies Frontend Architecture: TypeScript, JavaScript (ES6+), Redux/Context API, HTML5, CSS3, REST/gRPC integration. Streaming & Messaging: Apache Kafka, Apache Flink. APIs & Protocols: RESTful web services, gRPC, JSON, Protocol Buffers. Core Computer Science: Strong mastery of data ...

Senior Software Engineer

Hiring Organisation
Fruition Group
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
Essential 5+ years professional software engineering experience Strong TypeScript, Node.js and React experience Experience designing, building and operating production backend services Strong grasp of REST APIs, auth/authorisation and data modelling (MongoDB or similar) Experience with event-driven/message-based systems (SNS/SQS, Kafka or RabbitMQ) Solid ...

Software Development Manager

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
technical foundation in the Microsoft stack, including the .NET framework (versions .NET Core, 8 and beyond), SQL Server, and microservices architectures. Familiarity with microservices, REST APIs, Docker, Redis, and cloud platforms (such as AWS or Azure) is essential. You’ll also be comfortable working in a DevOps-driven culture, using ...

JavaScript Developer Angular - Tech for Good

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
modern Angular, they're using Angular 21 You have experience with relational databases and SQL query writing You have a good understanding of REST APIs, real-time systems, CI/CD You have a strong knowledge of software engineering best practices and Agile development methodologies You have experience in start ...

Automation Test Engineer

Hiring Organisation
Accenture
Location
City of London, London, United Kingdom
tools, self-healing automation, LLM-assisted scripting or debugging Independence: Ability to manage workstreams and collaborate effectively with minimal supervision API Testing: Experience testing REST APIs using tools like Postman or automation frameworks Desirable Skills (The Competitive Edge) Cloud Proficiency: Experience with AWS or GCP (e.g., S3, EC2, Lambda ...

Senior Data Privacy & BigID Consultant

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
Purview) Identity & Access Management basics (IAM, RBAC) Encryption, tokenization, and data masking techniques Scripting & Automation Python/Bash for automation and data profiling scripts REST API integration and JSON/XML data handling QUALIFICATIONS Experience 7+ years in data governance, privacy, or information security 4+ years in a client-facing ...

ServiceNow Technical Architect

Hiring Organisation
Anson McCade
Location
City of London, London, United Kingdom
developing ServiceNow technical teams. Strong experience implementing technical governance, architecture reviews and coding standards. Advanced JavaScript development and scripting expertise. Strong knowledge of REST APIs, SOAP Web Services and enterprise integrations. SQL and integration design experience. Experience integrating ServiceNow with AWS, Microsoft Azure and/or Google Cloud Platform. Experience ...

ServiceNow Architect

Hiring Organisation
Anson Mccade
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
developing ServiceNow technical teams. Strong experience implementing technical governance, architecture reviews and coding standards. Advanced JavaScript development and scripting expertise. Strong knowledge of REST APIs, SOAP Web Services and enterprise integrations. SQL and integration design experience. Experience integrating ServiceNow with AWS, Microsoft Azure and/or Google Cloud Platform. Experience ...

Principal Software Engineer Java Spring Boot AWS

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 ...

Senior Software Engineer

Hiring Organisation
OB Collective
Location
City of London, London, United Kingdom
building and reasoning about concurrent, fault-tolerant services Experience with data pipelines — ingestion, transformation, lineage, streaming and batch Solid API and structured-data fluency: REST/gRPC, JSON/Avro/Protobuf Sound CI/CD and testing discipline — correctness matters in high-assurance work Self-directing: able to take ...

Senior C# Engineer .NET 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 ...

Senior React Developer

Hiring Organisation
E-Solutions
Location
City of London, London, United Kingdom
deployment. Technical Skills & Expertise ✅ Expert-level proficiency in HTML, CSS, JavaScript, React, and TypeScript ✅ Strong understanding of WebSockets, Server-Sent Events (SSE), and REST APIs ✅ Solid experience with state management libraries (e.g., Redux) and reactive programming paradigms ✅ Strong understanding of Micro-Frontends and Single Page Applications (SPA) ✅ Hands-on experience ...

Integration Specialist - Active SC, Azure Integration & PaaS

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £465/day Up to £465pd (Inside IR35)
Clearance. Experience migrating services from Azure IaaS to Azure PaaS. Knowledge of API-led, event-driven and messaging-based integration patterns. Experience with REST APIs, JSON, XML and secure integrations. Strong understanding of Azure networking, Entra ID, managed identities and Key Vault. Experience with Azure DevOps, CI/CD pipelines ...

Java & React Engineer

Hiring Organisation
Randstad Technologies Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum Market Rate/ Negotiable
supporting critical financial operations. Key Responsibilities: Design and deliver end-to-end applications using Java (Spring Boot) and React . Build scalable backend microservices, REST APIs, and gRPC services. Utilize Kafka for real-time event streaming and data processing. Deploy and maintain applications in AWS using Kubernetes . Collaborate across ...

SAP Developer

Hiring Organisation
Zachary Daniels
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£65,000
gained experience working with SAP Hybris (SAP Commerce Cloud). You'll ideally have experience with: SAP Hybris (SAP Commerce Cloud) Java Spring Framework REST APIs Ecommerce platforms SQL and relational databases Git and CI/CD Agile development methodologies Retail or ecommerce experience would be highly advantageous. Package ...

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 ...

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 ...

Duck Creek Developer

Hiring Organisation
Versified
Location
City of London, London, United Kingdom
Billing and Claims. What you'll be doing: Developing and configuring Duck Creek solutions for Policy, Billing and Claims Integrating third party systems via REST/SOAP APIs Working within Duck Creek Studio and the wider toolset Managing source code and version control through Git Contributing to CI/ ...

ServiceNow Architect

Hiring Organisation
TECHNEST TALENT LTD
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 80,000 - 90,000 Annual
technical standards. Design and implement solutions across ITSM and additional ServiceNow modules including ITOM, ITAM, HRSD, CSM, GRC and SecOps. Drive integrations using REST, SOAP APIs and MID Servers. Ensure platform scalability, security and performance. Lead architecture workshops and mentor junior technical teams. Essential Skills: Extensive ServiceNow architecture experience. Strong ...

ServiceNow Architect

Hiring Organisation
TechNest Talent
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£90,000
technical standards. Design and implement solutions across ITSM and additional ServiceNow modules including ITOM, ITAM, HRSD, CSM, GRC and SecOps. Drive integrations using REST, SOAP APIs and MID Servers. Ensure platform scalability, security and performance. Lead architecture workshops and mentor junior technical teams. Essential Skills: Extensive ServiceNow architecture experience. Strong ...

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. ...

Scala Developer - Remote Contract

Hiring Organisation
Stealth iT Consulting
Location
City of London, London, United Kingdom
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 ...

Senior IAM & PAM Consultant

Hiring Organisation
Jobleads-UK
Location
City Of London, England, United Kingdom
Time (JIT) access. Integrate PAM with Microsoft Entra ID, Active Directory, LDAP, cloud platforms, and enterprise applications. Develop automation using PowerShell, Python, and REST APIs. Troubleshoot authentication, provisioning, and privileged access issues. Support platform upgrades, migrations, and disaster recovery testing. Produce technical documentation and operational runbooks. Functional/Non-Technical ...

Network Automation Architect

Hiring Organisation
Adecco
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £740/day
work collaboratively with various teams. Essential Skills: Cisco NX OS (VXLAN BGP EVPN, vPC, SNMPv3, TACACS+). Python for production-quality automation and REST API integration. GitHub/GitLab experience, including self-hosted runner configuration. YAML and JSON data handling. Red Hat Ansible Automation Platform. Experience producing HLD/ ...