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3 Permanent API jobs in Southwark (SE1) + 20 miles
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Automation Test Engineer
Automation Test Engineer
Data Careers
Southwark, South East London (SE1), SE1
£60000 - £80000 per annum
Skills: Integration Testing, API Testing, SQL, BDD (Gherkin / SpecFlow), Test Automation * Support API and integration testing across distributed systems * API testing expertise
Skills: Integration Testing, API Testing, SQL, BDD (Gherkin / SpecFlow), Test Automation * Support API and integration testing across distributed systems * API testing expertise
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Back-end (Primary Focus),Expert in C# and .NET Core with strong experience in MVC, REST API design and best practices; deep knowledge of AWS/cloud computing, microservices, CQRS, event-driven and message-based architectures; experienced with SQL Server, PostgreSQL and Docker-based containerised workloads.
Back-end (Primary Focus),Expert in C# and .NET Core with strong experience in MVC, REST API design and best practices; deep knowledge of AWS/cloud computing, microservices, CQRS, event-driven and message-based architectures; experienced with SQL Server, PostgreSQL and Docker-based containerised workloads.
PREMIUM
Company Description - At The Stepstone Group, we have a simple yetvery importantmission: The right job for everyone. Using our data, platform, and technology, we create opportunities for jobseekers and companies around the world to find a perfect match in fair andequitableway. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring. Join our team of 3,000+ employees and be part of reshaping the labour market and becoming the worlds leading job platform. Job Description - We are recruiting for a Staff Software Engineer (AI) to help design,buildand evolve production-grade agentic AI systems. This is a strategic, hands-on engineering leadership role focused on integrating Large Language Models into scalable, secure,reliableand observable architectures. This is an individualcontributorleadership role with no direct line management responsibility.
Company Description - At The Stepstone Group, we have a simple yetvery importantmission: The right job for everyone. Using our data, platform, and technology, we create opportunities for jobseekers and companies around the world to find a perfect match in fair andequitableway. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring. Join our team of 3,000+ employees and be part of reshaping the labour market and becoming the worlds leading job platform. Job Description - We are recruiting for a Staff Software Engineer (AI) to help design,buildand evolve production-grade agentic AI systems. This is a strategic, hands-on engineering leadership role focused on integrating Large Language Models into scalable, secure,reliableand observable architectures. This is an individualcontributorleadership role with no direct line management responsibility.
PREMIUM
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Senior Fullstack Software Engineer
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Senior Software Engineer (Python / Cloud Automation)
Senior Software Engineer (Python / Cloud Automation)
Spectrum It Recruitment Limited
London
£80000 - £110000 per annum + Bonus & benefits
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We're recruiting for a Senior Software Engineer to join a major long-term government technology programme, helping build secure, large-scale customer contact and communications platforms used by critical organisations. Are you a software engineer who loves solving infrastructure challenges through code? * Building automation frameworks and tooling using Python This is an opportunity to work on complex cloud infrastructure, automation, and platform engineering challenges where your work will have a direct impact on the success of a high-profile programme. Unlike many infrastructure roles, this is a genuinely software engineering-focused position. You'll spend your time building automation frameworks, developing internal tooling, creating Infrastructure as Code solutions, and eliminating manual processes through clean, scalable, production-quality code.
Proven experience in full-stack software development across design, build, test, and deployment - Senior Software Engineer - Digital & Public Sector Delivery - A growing digital consultancy delivering complex transformation programmes across the public sector is seeking a Senior Software Engineer to join its engineering team. As a Senior Software Engineer, you will design, build, and deliver high-quality software solutions across a variety of complex projects. * Work across the full software development lifecycle from concept through to deployment - o Full-stack JavaScript (e.g. React, Node.js) You'll operate as part of agile, cross-functional teams, while also mentoring junior engineers and supporting continuous improvement across engineering capability. * Design, develop, and maintain scalable, secure, and robust software solutions * Mentor and support junior engineers to develop their skills
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Lead Full Stack Ruby Developer
Lead Full Stack Ruby Developer
G.R.E. Recruitment Limited
City of London (EC1)
From £80,000 to £85,000 per annum
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Senior Software Engineer - eDV Cleared
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NSD
London
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The Role: An exceptional contract opportunity has arisen for a Senior Java Developer with deep Apache Kafka experience to join a major Central Government Department. To Apply: If you are a senior Java & Kafka Developer holding active SC Clearance, looking for an autonomous, high-impact remote contract, please apply with your updated CV for immediate consideration. * Event-Driven Design: Develop and maintain scalable data pipelines and real-time streaming architectures using Apache Kafka. * Expert-level Java (Modern versions, Spring Boot microservices framework). * Deep production experience with Apache Kafka (topics, partitions, consumers, KStreams, schema registry). Location: Fully Remote (UK Based) Rate: £525 / day (Umbrella / Inside IR35) - NON-NEGOTIABLE - Contract Length: 6 Months (with strong view to extend) Clearance: Active SC Clearance (Mandatory / Essential)
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Backend Software Engineer C# Rust HFT
Backend Software Engineer C# Rust HFT
Client Server
Shoreditch, East London (E1), EC2A
£65000 - £80000 per annum + bonus + benefits
As a Backend Software Engineer you will design and develop low latency trading applications working across the full stack with a focus on backend development. Backend Software Engineer / Developer (C# .Net Rust Low Latency HFT) London / WFH to £80k+ Apply now to find out more about this Backend Software Engineer / Developer (C# .Net Rust Low Latency HFT) opportunity. * You have strong backend OOP, multithreaded software engineering experience with C# .Net and are comfortable working with Rust going forward (you have some Rust experience e.g. personal projects) Opportunity to join a hugely profitable High Frequency Trading firm that specialise in crypto markets and earning substantial bonuses in a hands-on role, working with C# and Rust. You'll collaborate with a small, talented team, problem solving and working on complex and challenging systems with interesting work and lots of ownership within a ...
As a Backend Software Engineer you will design and develop low latency trading applications working across the full stack with a focus on backend development. Backend Software Engineer / Developer (C# .Net Rust Low Latency HFT) London / WFH to £80k+ Apply now to find out more about this Backend Software Engineer / Developer (C# .Net Rust Low Latency HFT) opportunity. * You have strong backend OOP, multithreaded software engineering experience with C# .Net and are comfortable working with Rust going forward (you have some Rust experience e.g. personal projects) Opportunity to join a hugely profitable High Frequency Trading firm that specialise in crypto markets and earning substantial bonuses in a hands-on role, working with C# and Rust. You'll collaborate with a small, talented team, problem solving and working on complex and challenging systems with interesting work and lots of ownership within a ...
PREMIUM
Solutions Engineer Full Stack Ruby Python React
Solutions Engineer Full Stack Ruby Python React
Client Server
Shoreditch, East London (E1), EC2A
£65000 - £80000 per annum + benefits
Solutions Engineer / Full Stack Developer (Ruby Python React) London / Remote to £80k - Apply now to find out more about this Solutions Engineer / Full Stack Developer (Ruby Python React) opportunity. As a Solutions Engineer you will collaborate with customers, Business Analysts and Project Managers, to help shape technical solutions from initial discovery through to successful delivery, leading the development of bespoke functionality, integrations and customer-facing products that deliver real business value. You could be progressing your career as a Solutions Engineer at a SaaS FinTech; their capital market tools are used by Investment Banks and independent research providers to automate and analyse client service and research consumption, presenting a complete overview of the client relationship made available via the Cloud.
Solutions Engineer / Full Stack Developer (Ruby Python React) London / Remote to £80k - Apply now to find out more about this Solutions Engineer / Full Stack Developer (Ruby Python React) opportunity. As a Solutions Engineer you will collaborate with customers, Business Analysts and Project Managers, to help shape technical solutions from initial discovery through to successful delivery, leading the development of bespoke functionality, integrations and customer-facing products that deliver real business value. You could be progressing your career as a Solutions Engineer at a SaaS FinTech; their capital market tools are used by Investment Banks and independent research providers to automate and analyse client service and research consumption, presenting a complete overview of the client relationship made available via the Cloud.
NEWPREMIUM
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East London (E1)
From £65,000 to £75,000 per annum
Hands on experience with Java, Spring Boot, Python and Microservices, although a true polyglot is preferred. We are looking for a Lead Software Engineer who will be responsible for the design, development, and deployment of high-quality software solutions. * Extensive experience in full-stack software engineering, including design, development, testing, and deployment. This role involves leading a team of engineers on high-profile projects, ensuring best practices are followed, and driving continuous improvement in software development processes. * Lead the architecture, design, and development of complex software systems, ensuring they meet high standards of quality, security, and scalability. * Manage and mentor a team of software engineers, providing technical guidance to foster professional growth. * Previous, relevant experience as a senior software engineer
Hands on experience with Java, Spring Boot, Python and Microservices, although a true polyglot is preferred. We are looking for a Lead Software Engineer who will be responsible for the design, development, and deployment of high-quality software solutions. * Extensive experience in full-stack software engineering, including design, development, testing, and deployment. This role involves leading a team of engineers on high-profile projects, ensuring best practices are followed, and driving continuous improvement in software development processes. * Lead the architecture, design, and development of complex software systems, ensuring they meet high standards of quality, security, and scalability. * Manage and mentor a team of software engineers, providing technical guidance to foster professional growth. * Previous, relevant experience as a senior software engineer
PREMIUM
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Senior Software Developer
Senior Software Developer
Sanderson Recruitment
London
£60000 - £65000 per annum + Some flexibility + £15-£20k in bonus
Senior Software Engineer (Python/Java, AWS) From a technical standpoint, the team is looking for experienced software engineers with strong skills in either Python or Java alongside AWS, with the ability to work across a modern cloud environment. London, Manchester or Gloucestershire - primarily on site £60,000-£65,000 per annum basic salary, with some flexibility at the top end for the right candidate £15,000-£20,000 per annum in additional compensation related to clearance and wider benefits - No clearance required to apply, but eligibility for enhanced DV clearance is essential - Sanderson Government and Defence are partnered with a major organisation in the UK Defence and National Security space as they look to strengthen their engineering capability delivering into a highly secure government programme. This role can be based in London, Manchester or Cheltenham, and we are open to ...
Senior Software Engineer (Python/Java, AWS) From a technical standpoint, the team is looking for experienced software engineers with strong skills in either Python or Java alongside AWS, with the ability to work across a modern cloud environment. London, Manchester or Gloucestershire - primarily on site £60,000-£65,000 per annum basic salary, with some flexibility at the top end for the right candidate £15,000-£20,000 per annum in additional compensation related to clearance and wider benefits - No clearance required to apply, but eligibility for enhanced DV clearance is essential - Sanderson Government and Defence are partnered with a major organisation in the UK Defence and National Security space as they look to strengthen their engineering capability delivering into a highly secure government programme. This role can be based in London, Manchester or Cheltenham, and we are open to ...
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