CBS Butler

last week

Java Engineer: Market Data RTSDK Migration (Hybrid)

HybridUK

Hybrid (3 days onsite in London) Java engineering role leading the migration of a futures algorithmic trading platform's market data layer from LSEG/Refinitiv RFA to RTSDK, analysing existing market data usage and supporting performance-critical, low-latency trading workflows. Salary £85K–£110K.

Java Engineer - Market Data

AI API Java TDD Test Automation

Java engineer on a futures algorithmic trading platform, migrating market data code from the legacy LSEG/Refinitiv RFA API to RTSDK. Day to day: analysing existing RFA usage, updating Java applications and shared frameworks, running regression/automated tests. London-based, hybrid 3 days per week.

Python DevOps Engineer - Automation & Production Stability

HybridUK

CBS Butler is hiring an Application DevOps Engineer for its London team to own Python automation, production stability and continuous improvement on high-volume financial tech platforms. It's a hybrid role collaborating across application, infrastructure and development teams to improve reliability, scalability and deployment efficiency.

Automation DevOps Python

Python Application/Devops Engineer

UKFull-time

Automation CI/CD Cloud DevOps Distributed Systems +3 skills

Hands-on Python/DevOps engineer at a London financial services firm, building automation tooling and keeping business-critical, high-volume production platforms stable, resilient and observable. Core tech: Python, CI/CD, deployment, monitoring/observability, with cloud and containers as a plus.

Remote NHS Full-Stack Developer (TypeScript/Node.js)

API Microservices Node.js REST TypeScript

CBSbutler is recruiting a full-stack developer to join a multidisciplinary NHS product delivery team in Leeds, turning Care Plan journeys into a production-ready NHS App experience. Day-to-day work involves TypeScript/Node.js full-stack development, building RESTful APIs and microservices with a strong emphasis on testing, security, information governance and NHS ecosystem integration.

Automation AWS DevOps Kubernetes Python

DevOps Engineer - Python/Go in AWS & Kubernetes (SC)

Europe

Norway

Development-focused DevOps engineer role on a major UK Government digital transformation programme, doing hands-on work with Python, Go, AWS, Kubernetes and automation in secure, large-scale environments. Candidates need active SC clearance and must meet single-nationality criteria, with potentially longer onboarding due to vetting.

Active Directory API Automation AWS CI/CD +15 skills

DevOps Engineer - Python Specialist

Europe

Norway

A development-focused DevOps engineer role on a major UK Government digital transformation programme, building and automating secure, large-scale backend systems with Python and Go on AWS and Kubernetes. Requires active SC clearance, single nationality, and covers CI/CD, Vault and directory integrations.

DevOps Engineer - Python Specialist

Active Directory API Automation AWS CI/CD +17 skills

A DevOps engineer with strong Python skills supporting a UK Government digital transformation programme: building Python backend services and APIs, automating Kubernetes and AWS deployments, maintaining CI/CD pipelines, and managing secrets with HashiCorp Vault in a secure, security-cleared environment.

Full Stack Developer

Agile API Flask JavaScript Python +2 skills

Contract (IR35-in-scope) full-stack developer role building and maintaining secure applications for a major UK government programme. Day to day: Python/Flask backends, JavaScript/React frontends, REST API design and integration, delivered in Agile teams. Active UK SC clearance is required.

Security-Cleared Azure DevOps Engineer – London Hybrid

AWS Azure Azure DevOps CI/CD Cloud +2 skills

SC-cleared Azure DevOps Engineer on a 6-month+ hybrid contract in London (£650–£675/day, Inside IR35), joining a government-focused team to lead mature CI/CD pipelines and build scalable, secure cloud infrastructure across AWS, Azure, and GCP.

Azure DevOps Engineer - SC Cleared

Automation AWS Azure Azure DevOps Bash +13 skills

6-month+ contract DevOps engineer role (inside IR35, £650-675/day) building secure technology solutions for a confidential UK government project in London. Day to day covers cloud platforms (AWS/Azure/GCP), CI/CD pipelines, Docker/Kubernetes and scripting — active transferable UK SC clearance and sole British nationality are mandatory.

DV-Cleared SAP Test Lead | Azure DevOps & On-Site

UKLead

Azure Azure DevOps DevOps SAP Stakeholder Management

CBSbutler is recruiting a DV-cleared Test Lead to manage end-to-end testing across SAP and Azure DevOps environments for a major UK Defence programme in Reading. The role is fully on-site in a secure environment and involves coordinating testing across technical and delivery teams.

SC Cleared Senior Scala Data Engineer - Hybrid London

HybridUKContractSenior

CBS Butler is sourcing a Senior Scala Data Engineer for a 6-month contract in London (hybrid). The engineer designs and builds secure, high-volume back-end services and REST APIs in Scala to support fraud detection and data integrity, using AWS, databases, CI, and Agile practices. Active SC Clearance is required; IR35 applies.

Agile API AWS REST Scala

Scala Data Engineer - Contract - SC Clearance - London

Agile Airflow API Api Design Automation +11 skills

Contract Senior Scala Data Engineer on a 6-month hybrid engagement in London, building secure, high-volume, low-latency back-end services and APIs supporting fraud detection and data integrity. Daily work centers on Scala/Play development, REST APIs, SQL databases and AWS within Agile, CI-driven teams.

Remote Java Developer - Spring Boot & Microservices

API Java Microservices REST Spring

CBSbutler is recruiting an experienced Java Developer for a remote team building a UK Home Office project. Day to day you design, develop and enhance secure, scalable Java services using Spring Boot, REST APIs and microservices, working across the full lifecycle from design and development to testing, deployment and optimisation.

Java Developer

Agile API AWS Azure CI/CD +18 skills

6-month rolling contract Java Developer (£525/day inside IR35) working remotely on a UK Home Office project, building and enhancing secure, scalable Java applications. Day-to-day work spans Java, Spring Boot, REST APIs, microservices, SQL databases, and the full development lifecycle, with cloud, Docker/Kubernetes and CI/CD experience desirable.

DV-Cleared Data Engineer for Defence Tech (Hybrid)

HybridUKContract

Senior Data Engineer contract via CBS Butler for the UK Defence/MOD sector, requiring DV or EDV security clearance. You'll design, build and maintain secure, scalable data pipelines, collaborating with data scientists, analysts, DevOps and client stakeholders in a hybrid role with 50% MOD site presence around Bristol/Wiltshire.

Data Pipelines DevOps

Data Engineer - DV Cleared

HybridUKContract

AI Ansible API Automation CI/CD +20 skills

Contract senior data engineer on a high-profile UK defence/MOD programme, designing and building secure data pipelines and models using Python, SQL, Apache NiFi, Parquet/S3 storage and GitLab CI/CD, working hybrid around Bristol and MOD sites in Wiltshire; DV or EDV clearance is essential, at £55-60 per hour.

Java Engineer – WebLogic, Oracle, Kubernetes (Hybrid)

Open 15d HybridUKContract

Contract Java engineer maintaining and enhancing enterprise Java applications in a live environment — keeping critical services running, supporting batch processing, and delivering controlled change using WebLogic, Oracle SQL, and Kubernetes. 6-month rolling contract at £450/day, hybrid with 2 days onsite per week in the UK.

Java Oracle SQL Weblogic

450 – 450 £ / day