21 of 21 REST Jobs in the City of London

Senior Python Developer

Hiring Organisation
Tech 4
Location
City of London, London, United Kingdom
Employment Type
Permanent
codebases, using modern tooling to improve reliability and evolve architecture pragmatically. Strong system design fundamentals across scalability, performance, and distributed systems, including API design (REST, GraphQL). Hands-on experience with observability tooling (Datadog, Grafana, or similar) and a data-informed approach to system health and reliability. Solid ...

SC Cleared QA SDET

Hiring Organisation
ARM
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £540/day Inside IR35 (Negotiable rate)
passion for quality. Preferred Qualifications Salesforce certifications (e.g., Salesforce Administrator, Platform App Builder) are a plus. Experience with API testing tools (Postman, REST Assured) is desirable. Understanding of enterprise-level integration testing. Disclaimer: This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited ...

Build & Deployment Engineer

Hiring Organisation
Deerfoot Recruitment Solutions Limited
Location
City of London, London, Coleman Street, United Kingdom
Employment Type
Contract
understanding of .NET Framework and modern .NET build and deployment - this is essential Practical experience with Visual Studio, MSBuild, NuGet, IIS, Windows services and REST APIs Administration or engineering experience with at least two of: Octopus Deploy, TeamCity, GitHub Enterprise, JFrog Artifactory, JFrog Xray, Azure DevOps Server Strong PowerShell, plus ...

Java Developer Kafka API - Tech Consultancy

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
have experience with Spring Boot and microservices environments You have experience with Kafka (or similar messaging tools) 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, Data ...

Senior SharePoint Developer

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90,000
modernization initiatives moving classic SharePoint experiences to modern SharePoint. * Design and develop enterprise-scale solutions using SPFx, React, TypeScript, JavaScript, Microsoft Graph APIs, and REST APIs. * Design and maintain enterprise on-premise and cloud SharePoint platforms, including site architecture, navigation, branding, and content structure. * Administer SharePoint SE (on-prem ...

Full Stack Developer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£600 - £630/day
inside IR35 - Umbrella only Required skills Azure experience including Functions, App Services, Key Vault, Monitor, and general cloud native design. C#, .NET 10, REST API development, and enterprise backend engineering. Frontend development with TypeScript, JavaScript or NHS Digital Design System components. Confident and experienced use of AI development agents ...

Salesforce Developer

Hiring Organisation
Halian Technology Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
requirements. Required Skills & Experience 48 years of hands-on Salesforce development experience. Strong proficiency with: Lightning Web Components (LWC) Apex Classes, Triggers, Test Classes REST/SOAP APIs SOQL & SOSL Experience with Salesforce platform features including Flows, Service Cloud or Sales Cloud, and custom objects. Understanding of development best practices ...

Python Django Developer

Hiring Organisation
Invitise Ltd
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£720 per day
need to hold or be eligible to obtain SC clearance for this role. Interested? Please apply below. Lead Software Engineer, Technical Lead, Python, Django, REST APIs, System Design, Software Architecture, TDD, Agile, GDS, London, Manchester, Birmingham, Cardiff, Hybrid/Remote, Contract, Inside IR35 ...

Senior ServiceNow Developer

Hiring Organisation
DGH Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£95,000
solutions. Strong experience with Flow Designer, Business Rules, Client Scripts, UI Policies, UI Actions, access controls, notifications, forms and catalog items. Integration experience with REST, SOAP, APIs, IntegrationHub, MID Server and Import Sets. Working knowledge of JavaScript, Glide APIs, HTML, CSS and XML. Experience developing custom scoped applications and workflows ...

Salesforce AI Engineer

Hiring Organisation
83zero Limited
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
platforms. Salesforce AI: Einstein, Prompt Builder, Agentforce, Data Cloud or related AI capabilities. Development: Apex, Lightning Web Components (LWC), APIs and Salesforce development. Integration: REST/SOAP APIs, data integration, ETL and data mapping. Data & Platforms: Experience working with tools such as MuleSoft, Informatica or similar technologies would be beneficial. ...

IBM Netcool / Observability Technical Lead

Hiring Organisation
Deerfoot Recruitment Solutions
Location
City of London, London, United Kingdom
Employment Type
Contract, Work From Home
Contract Rate
£780 - £830 per day
Change environment Confident communication and stakeholder management with both technical and non-technical audiences Desirable: IBM Tivoli Monitoring (ITM), Dynatrace, IBM Instana or OpenTelemetry, REST APIs/JSON/XML, cloud monitoring across AWS, Azure or GCP, container and Kubernetes monitoring, SRE practices, financial services or regulated environment experience ...

Full Stack Software Engineer

Hiring Organisation
Acacia Green Technologies
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
full stack engineer whose main strength is backend development. You will take primary responsibility for Node.js and JavaScript services, PostgreSQL data models, REST APIs and a growing microservices estate, while contributing to React.js interfaces when a feature requires end-to-end ownership. The role sits close to live hotel deployments … production-ready documentation. Own PostgreSQL schema design, SQL queries, migrations, data integrity and performance for operational and time-sensitive product workloads. Develop well-structured REST APIs and event-driven integrations between Acacia applications, hotel systems, sensors, gateways and third-party platforms. Evolve our microservices architecture pragmatically, balancing service independence with ...

Senior Product Owner D365 CE and Custom Portal

Hiring Organisation
Workwell
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
programme context, including awareness of the Power Platform Centre of Excellence (CoE) governance model. Awareness of common D365 CE integration and migration approaches (e.g. REST APIs, Azure Service Bus, and tooling such as KingswaySoft or Azure Data Factory). Awareness of Microsoft D365 CE release cycles, the make/ ...

IT Application Engineer (Law Firm)

Hiring Organisation
DGH Recruitment Ltd
Location
City, London, United Kingdom
Employment Type
Permanent
Salary
GBP 82,000 - 88,000 Annual
supporting business-critical applications within professional services or similarly complex environments. Strong technical expertise in at least one of the following: Azure Integration Services, REST APIs, SQL, Microsoft Power Platform or Microsoft Fabric. Solid understanding of system integrations, data structures, data flows and application architecture. Experience with application configuration, troubleshooting ...

Implementation Engineer

Hiring Organisation
Hackajob Ltd
Location
City Of Westminster, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
customer-facing technical role, preferably within a Software as a Service environment, delivering implementation and integration solutions Strong understanding of application programming interfaces, including REST and SOAP standards, to support client integrations and troubleshooting Kno click apply for full job details ...

Web Security Engineer, Akamai

Hiring Organisation
Sanderson Recruitment
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £600 per day
rule tuning, exception management and application onboarding. Good understanding of OWASP Top 10 and OWASP API Security Top 10. Knowledge of HTTP/S, REST APIs and application layer attack mitigation. Experience with vulnerability management, Qualys and attack surface monitoring tools. Understanding of patch management and vulnerability remediation. Strong stakeholder ...

Senior Software Engineer

Hiring Organisation
The Portfolio Group
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£90000/annum
tooling to AI agents. Develop agent-to-agent connectivity, including message contracts, state management, retries and failure handling. Design clear, scalable APIs using REST and/or GraphQL, including authentication, authorisation, versioning and streaming interfaces such as SSE or WebSockets. Build production frontend applications using React, TypeScript and JavaScript. Work … commercial experience with Python for backend and integration development. Strong TypeScript/JavaScript and React experience building production applications. Strong API design experience, including REST and/or GraphQL, authentication, authorisation, versioning and streaming. Hands-on experience with MCP (Model Context Protocol) or comparable tool/plugin integration technologies, alongside ...

Senior Software Engineer

Hiring Organisation
Method-Resourcing
Location
City of London, London, United Kingdom
Employment Type
Permanent
mathematical thinking to engineering problems Working alongside teams using AI and machine learning within the wider technology environment Technology Python | Java | GCP | Docker | REST APIs | Distributed Systems | Event-Driven Architecture | Streaming | Real-Time Data | AI/ML What We're Looking For We're looking for engineers with strong backend … high-throughput applications Low-latency engineering experience Strong analytical and mathematical problem-solving ability Experience with cloud platforms, ideally GCP Docker/containerisation experience REST API development experience Experience with event-driven architecture or messaging Exposure to AI, machine learning or AI-enabled systems Strong understanding of performance, reliability ...

AI Deployment Engineer

Hiring Organisation
Emponics
Location
City of London, London, United Kingdom
Employment Type
Permanent
storage supporting current and future AI deployments Troubleshoot integration failures, data inconsistencies, and production issues Key Skills Python & SQL (production-grade pipeline development) REST APIs, webhooks, OAuth, event-driven architecture Orchestration tools: Airflow, Prefect, or Dagster Cloud platforms: AWS, GCP, or Azure Docker & Kubernetes Microsoft 365 & Microsoft Copilot Desirable Skills … data pipelines, and production infrastructure. Strong Python and SQL skills; experienced building robust, production-grade data pipelines from scratch. Deep familiarity with integration patterns: REST APIs, webhooks, OAuth, and event-driven architectures. Experience with orchestration tools (Airflow, Prefect, or Dagster) and transformation frameworks (dbt or similar). Comfortable across cloud ...

Salesforce Developer (Financial Services)

Hiring Organisation
Morson Edge
Location
City of London, London, United Kingdom
Employment Type
Contract
development lifecycle while contributing to the ongoing enhancement and stability of our Salesforce estate. In this role, you'll design and implement integrations using REST APIs, Platform Events, Change Data Capture (CDC) and other modern integration patterns, ensuring secure, scalable and high-performing solutions. You'll analyse business requirements … Components (LWC), triggers and batch classes, and have hands-on experience with OmniStudio, including OmniScripts, FlexCards, DataRaptors and Integration Procedures. A strong understanding of REST APIs, Streaming API, Platform Events and Change Data Capture is essential, as is experience implementing eID&V solutions. Experience within banking or financial services would ...

Network Engineer (IOS-XR & NSO)

Hiring Organisation
Oscar Associates (UK) Limited
Location
City of London, London, United Kingdom
Employment Type
Contract
Contract Rate
£400 - £465 per day
busy production environment, including upgrades, platform moves and root cause analysis Developing and maintaining automation in Cisco NSO (service models, YANG, Python, NETCONF/REST) for provisioning, compliance checks and software upgrades What you'll need Experience in large enterprise or service provider networks Strong, current, hands-on Cisco … experience Strong Cisco NSO experience (service modelling, YANG, Python, NETCONF/REST, Git) Expert knowledge of MPLS, SR-MPLS, ISIS, BGP, OSPF, EVPN, L2VPN/L3VPN, multicast and QoS Must have experience in NSO & IOS-XR Core Network Engineer (IOS-XR & NSO) | £465p/day (Inside IR35) | 2 days ...