1 to 25 of 58 Contract Software Engineering Jobs in London

Go Engineer/GoLang Engineer/AI Engineer/AI Developer/Software Engineer - Go We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. Are you ready to bring your Lead Software Engineering expertise to the next level? We're looking for multiple experienced … s commercial goals by harnessing artificial intelligence and machine learning technologies to develop new products, improve productivity, and enhance risk management effectively and responsibly Overview: Designs and develops creative software solutions, and technical troubleshooting with ability to think beyond routine or conventional approaches to build solutions or break down technical problems Develops secure high-quality production code, and reviews … and debugs code written by others Identifies opportunities to eliminate or automate remediation of recurring issues to improve overall operational stability of software applications and systems Leads evaluation sessions with external vendors, startups, and internal teams to drive outcomes-oriented probing of architectural designs, technical credentials, and applicability for use within existing systems and information architecture Leads communities of More ❯

Backend Platform Engineer Remote, UK 6 Month Contract An exciting opportunity for a Backend Platform Engineer with a strong software engineering background to join a prestigious tech client on a contract basis. This is a well-regarded engineering environment where contractors speak highly of the fast-paced, collaborative culture, and the real autonomy they're given to … delivery across the business. From improving CI/CD pipelines and service deployment to shaping internal platforms and runtime environments, your work will help enable fast, secure, and reliable software delivery at scale. You'll work closely with product teams and engineers across the stack to enhance developer experience, troubleshoot complex systems, and improve observability. This isn't a … maintenance role - you'll be building, iterating, and solving meaningful engineering problems, with a strong focus on clean code, robust security practices, and modern cloud infrastructure. Backend Platform Engineer - Key Requirements: Solid experience in software engineering, platform, or backend-focused roles Proficiency in Go and/or Python, particularly for building internal tooling and services Strong experience More ❯

CONTRACT SENIOR SOFTWARE ENGINEER - eDV CLEARED NEW CONTRACT JOB OPPORTUNITY AVAILABLE WITHIN A LEADING NATIONAL SECURITY COMPANY FOR A SENIOR SOFTWARE ENGINEER WITH eDV CLEARANCE Contract job opportunity for a Senior Software Engineer Globally leading defence/cyber security company £500 - £750 per day (inside and outside IR35 roles available) London based organisation in an easily accessible … location Contract Senior Software Engineer To apply please call or email WHO WE ARE? We are recruiting multiple contract Senior Software Engineers to work with various clients in London ranging from R&D companies, Multi-National Consultancies to SME's and product based companies. Due to the nature of the work these clients do, you must hold enhanced … DV Security Clearance. WHAT WILL THE SENIOR SOFTWARE ENGINEER BE DOING? As a Senior Software Engineer, you will work with an experienced agile team to design and deliver packages of bespoke work, work development teams and liaise with customers. You will work through the entire software development life cycle from requirements capture to R&D, implementation to More ❯

Job Title: Data Engineer/Software Engineer - AI/ML Research Location: London- UK (Hybrid role) Duration: Contract- Until Dec 25 with a possible extension About the Role We are seeking a Data Engineer/Software Engineer to support a pioneering project focused on LLM agents for research . You will play a key role in onboarding and … filtering text, image, and video datasets used by our client’s research teams. The goal is to proactively mitigate risks associated with these datasets through effective engineering and automation. This position offers the opportunity to work 100% on an AI-driven project, collaborating with researchers to build tools that allow intelligent agents to manage and improve datasets autonomously. Responsibilities … stakeholders. Execute data mitigation and filtering tasks with minimal overhead. Develop tools that enable LLM agents to process and manage data automatically. Required Skills & Qualifications Solid background in data engineering or software engineering . Proficient in Python and pipeline development . Experience with data cleaning, transformation, and validation . Understanding of modern data storage systems and formats. More ❯

Research Software Engineer Location: London (Hybrid) Duration: 8 weeks initially Salary: £30 an hour (Via an umbrella company) Role Overview We are seeking a Research Software Engineer to support computational and data science projects within the Department of Earth Science and Engineering. The role involves close collaboration with researchers to develop, implement, and support high-quality software … teaching and research. Key Responsibilities Collaborate with researchers to deliver data-driven and computational research solutions. Manage technical projects, including requirements gathering, planning, and risk management. Define and promote software development best practices (testing, CI/CD, version control). Design and deploy scalable software systems with monitoring in mind. Apply high-performance and distributed computing methods to … research students and contribute to the department's technical strategy. Engage with academic and technical stakeholders across the College. Person Specification Essential: Postgraduate qualification or equivalent experience in research software development Experience collaborating on research or computational projects Proficient in at least two research programming languages (e.g. Python, C++, R, Fortran, Matlab) Full software development lifecycle experience Strong More ❯

Research Software Engineer Location: London (Hybrid) Duration: 8 weeks initially Salary: £30 an hour (Via an umbrella company) Role Overview We are seeking a Research Software Engineer to support computational and data science projects within the Department of Earth Science and Engineering. The role involves close collaboration with researchers to develop, implement, and support high-quality software … teaching and research. Key Responsibilities Collaborate with researchers to deliver data-driven and computational research solutions. Manage technical projects, including requirements gathering, planning, and risk management. Define and promote software development best practices (testing, CI/CD, version control). Design and deploy scalable software systems with monitoring in mind. Apply high-performance and distributed computing methods to … research students and contribute to the department's technical strategy. Engage with academic and technical stakeholders across the College. Person Specification Essential: Postgraduate qualification or equivalent experience in research software development Experience collaborating on research or computational projects Proficient in at least two research programming languages (e.g. Python, C++, R, Fortran, Matlab) Full software development lifecycle experience Strong More ❯

monitoring performance and integrity of data pipelines. Preferred Qualifications • Knowledge of the government and elections space, including international politics, political parties, world leaders and national legislators.• 2+ years in software engineering, systems engineering, or technical product/program management.• 2+ years with scripting languages (e.g., Python), and/or statistical/mathematical software (e.g., R). More ❯

reliable delivery. Collaborate with analytics and reporting teams to deliver high-quality datasets for business intelligence. Participate in code reviews, documentation, and team discussions as part of a collaborative engineering culture. Ensure data quality, integrity, and security best practices are upheld. Profile The Junior Data Engineer will ideally have a degree in Computer Science, Engineering, Mathematics, or a … related field. 1-3 years of experience in a data engineering, data analytics, or software engineering role. Proficient in SQL for querying, data manipulation, and performance tuning. Hands-on experience with Azure Data Services (such as Azure Data Factory, Azure Synapse, Data Lake, or Logic Apps). Strong problem-solving skills and attention to detail. Excellent communication More ❯

relevant space leading large scale global projects or programs. Knowledge of the government and elections space, including international politics, political parties, world leaders and national legislators. 2+ years in software engineering, systems engineering, or technical product/program management. 2+ years with scripting languages (e.g., Python), and/or statistical/mathematical software (e.g., R). More ❯

design of the overall solution Daily sparring with your team Full life cycle of delivery S kills/Experience Minimum 4 years commercial experience Active SC Clearance Degree in Software Engineering, Computer Science, Information Technology or similar A curiosity to explore new technologies Experience across the full software development lifecycle Strong Front end developer with React specialism More ❯

Senior Go Developer London, UK 6 Month Contract An incredible opportunity for an experienced Senior Go Developer with strong backend engineering skills to join a prestigious tech client on a contract basis. Known for its high bar for engineering quality, this isn't your typical banking or fintech gig - contractors here are genuinely embedded, involved, and making meaningful … full development lifecycle, from system design and implementation to optimisation and release. You'll be working in an open, fast-moving environment where ideas get tested quickly and good engineering practices are taken seriously. If you like seeing your work go live within days - not weeks - you'll fit right in. Contractors are treated as part of the team … contributing to technical decisions, stand-ups, and everything in between. Reporting into an Engineering Manager, you'll be hands-on with technologies like AWS, Kubernetes, Docker, and Kafka, and will collaborate closely with product and infrastructure teams to ship well-architected, scalable microservices. This is a team that values clean systems, clear thinking, and code that lasts. You'll More ❯

of scalable full stack applications using React and AWS services. Collaborate with cross-functional teams including Product, Architecture, and Test to deliver high-quality software. Champion best practices in software engineering, including CI/CD, automated testing, and code reviews. Mentor junior engineers and contribute to a culture of continuous improvement. Participate in sprint planning, technical design sessions More ❯

of scalable full stack applications using React and AWS services. Collaborate with cross-functional teams including Product, Architecture, and Test to deliver high-quality software. Champion best practices in software engineering, including CI/CD, automated testing, and code reviews. Mentor junior engineers and contribute to a culture of continuous improvement. Participate in sprint planning, technical design sessions More ❯

Technology Strategy & Vision: Own and evolve the long-term technology roadmap in line with business goals and product vision. Leadership & Team Building: Build, mentor, and scale a high-performing engineering, DevOps, and data team. Foster a culture of collaboration, innovation, and accountability. Architecture & Scalability: Ensure the platform is secure, scalable, and performance as we grow globally. Make key decisions … and architecture. Product Collaboration: Work closely with the CPO and product teams to bring features to life efficiently, balancing speed with technical excellence. Delivery & Operations: Oversee day-to-day engineering operations, from sprint planning to release cycles and incident response. Security & Compliance: Ensure the platform meets industry best practices around security, data privacy (e.g., GDPR), and compliance standards (e.g. … a bridge between technical and non-technical teams, including reporting to the board and investors. Profile The CTO will have proven experience as a senior technology leader (CTO, VP Engineering, or similar) within a high-growth SaaS environment. Strong software engineering background with hands-on knowledge of modern web technologies, cloud infrastructure (AWS, Azure, or GCP), and More ❯

with stakeholders globally, and ensure the technology stack remains cutting-edge, secure, and aligned with both business goals and regulatory needs. Key Responsibilities Own the design and delivery of software solutions supporting front-office Fixed Income trading Represent IT in strategy, planning, and architecture discussions at senior levels Provide technical leadership in C#, .Net Core, and SQL Server within … with tools like ION Anvil , Neptune , and Mosaic Smart Data Collaborate daily with traders and desk heads to translate complex requirements into working technology Drive forward best practices in software engineering, including CI/CD and automated testing Promote a positive, inclusive, and high-performance team environment What We're Looking For Expert C#/.Net Core developer … with deep backend engineering experience Extensive experience in Fixed Income (bonds, swaps, low-touch e-trading platforms) Proven ability to work closely with Front Office and senior business stakeholders Experience delivering enterprise-grade systems in high-pressure financial environments Deep understanding of trading workflows, market risks, and regulatory context Skilled in Agile development, CI/CD pipelines, and architecture More ❯

customer's mission, focused on ensuring performance, availability, and scalability-while driving continuous improvement and innovation. About the Role As an SRE, you'll combine your operational expertise with software engineering skills to minimise manual effort and drive automation across complex systems. This role is perfect for someone who thrives on solving hard problems, automating the mundane, and … Skills & Experience We're more interested in your curiosity, enthusiasm, and problem-solving ability than ticking every box. However, experience in any of the following areas would be advantageous: Software development in web technologies or OOP (e.g., Python, Java, etc.) Database tech: Oracle SQL, PostgreSQL, MongoDB Proficient with Linux/Windows command line (Bash, PowerShell) Monitoring: Grafana, Prometheus, ELK More ❯

drive the transformation. You'll join a newly formed data team under a new Head of Data, working on a clean-slate Azure-based platform. The role bridges data engineering and analytics, focused on building scalable data models, automated pipelines, and enabling self-serve analytics across the organisation. Key Responsibilities Build and maintain scalable data pipelines using Azure Data … Work with analysts and business stakeholders to translate requirements into technical solutions Maintain clean, version-controlled codebases and contribute to documentation and data governance Support best practices in analytics engineering and provide guidance to junior team members What We're Looking For 5+ years' experience in analytics engineering or closely related roles Strong proficiency in SQL, Python, and … with Azure Databricks, ADF, and cloud-based data platforms Solid understanding of dimensional modelling, lakehouse/warehouse design, and scalable architecture Familiarity with Git, CI/CD, and modern software engineering workflows Confident using Power BI or similar BI tools to support self-service analytics Strong communication skills, able to work with both technical and non-technical teams More ❯

AKS, Azure, proficiency in Python/Golang coding and Infrastructure as Code (IaC) experience including use of Terraform and pipelines. Key Requirements: Proven experience as a Java Developer/Software Engineer within the Financial Services Expertise in Kubernetes/AKS Demonstrable experience with Azure Proficiency in Python/Golang coding Infrastructure as Code (IaC) experience including use of Terraform More ❯

I am currently working with a London-based Financial Services client who are actively seeking 2 Senior software engineers to join a market-leading team. What you'll need to succeed Extensive development experience with Javascript, Typescript, React, and NextJS. Strong Fullstack development experience. Strong experience with a range of technologies including cloud. Good experience managing large data sets. More ❯

I am currently working with a London-based Financial Services client who are actively seeking 2 Senior software engineers to join a market-leading team. What you'll need to succeed Extensive development experience with Javascript, Typescript, React, and NextJS. Strong Fullstack development experience. Strong experience with a range of technologies including cloud. Good experience managing large data sets. More ❯

as Phabricator, Sandcastle, Buck. • Experience with CI/CD concepts such as pipelines, jobs, alerts, managing build capacity. • Experience debugging and troubleshooting complex systems • Experience with SQL and data engineering Software development experience in Python, C#, C++, Hack/PHP • Experience in build systems • Experience with Android and Unity is nice to have • Experience with Bazel, buck is More ❯

in applied AI throughout government initiatives. Stay abreast of the latest AI trends and technologies. Who You Are: We're looking for someone with: Proficiency in Python and strong software engineering skills. Experience in deploying and monitoring production-ready systems in the cloud. Knowledge of Large Language Models, natural language processing, and deep learning. A passion for creating More ❯

Hedge Fund Trading - Contract Python Developer - Futures, FX, Credit, PnL, Data eng, AWS, Javascript Job Description We are looking for a motivated Software Engineer to work directly in one of our Trading teams. This is an exciting opportunity to develop high-performance software in a dynamic trading environment, collaborate with experienced developers and traders, and deepen your knowledge … in a technology team with other developers. - Proficiency in one or more well-structured programming languages (eg, Python, C++, C#, Java, Rust). - Familiarity with Linux. - Strong understanding of software development best practices, including: - Writing clean, testable code. - Version control (eg, Git). - Exposure to CI/CD pipelines. - Interest in working in a trading environment. - Knowledge of financial … products (eg, futures, FX, interest rate and credit in particular) and trading concepts (eg, transaction costs, PnL calculations). - Strong collaboration skills and a desire to work with other software engineers. - A passion for learning new skills, including financial concepts and trading workflows. Candidate background - Python development, including: - Scientific libraries (eg, Pandas, Polars, NumPy, SciPy). - Web technologies (eg More ❯

Python Software Engineer - Electronic Trading Infrastructure - sought by leading investment bank based in London - Hybrid - Contract *inside IR35* Key Responsibilities: Design, develop, and maintain Python-based automation tools for electronic trading infrastructure. Collaborate with infrastructure and trading teams to ensure robust and scalable solutions. Take ownership of components throughout their lifecycle-from design to deployment and support. Contribute to … continuous integration and test-driven development practices. Essential Skills & Experience: Advanced proficiency in Python and core software engineering principles (data structures, OOP, regular expressions). Strong experience writing unit tests, including mocking external utilities and APIs. Comfortable working in Linux and CLI-based environments. Familiarity with Linux debugging tools (e.g., tcpdump, strace). Proficient with modern development tools More ❯

to join a newly established Centre of Excellence (CoE) focused on delivering secure, scalable, and production-grade digital solutions for the financial services sector. This is a hands-on engineering role ideal for someone with deep expertise in Java, Spring Boot, and secure API design , and who thrives in fast-paced, client-facing environments. The successful candidate will play … a key role in shaping backend architecture, driving secure service delivery, and contributing to engineering standards across engagements. Key Responsibilities Design and develop backend services using Java and Spring Boot Architect and implement secure APIs using OAuth2, FAPI, OpenID Connect Ensure backend services are performant, scalable, and resilient Collaborate with frontend, DevOps, and QA teams to deliver integrated solutions … Participate in architecture reviews, technical design sessions, and stakeholder workshops Champion modern engineering practices including Agile , CI/CD , and DevSecOps Contribute to the development of reusable backend assets and CoE standards Required Skills and Experience Extensive hands-on experience with Java and Spring Boot in enterprise environments Proven expertise in designing and delivering secure APIs (OAuth2, FAPI, OpenID More ❯