29 senior software engineer jobs found

Contract Software Engineer (C++/C#) / Manchester / 12 Month Contract Are you a skilled Software Engineer with solid experience in both C++ and C#? Join a high-performing team working on a critical HealthTech platform that is used widely across the globe! What do we need from you? Strong professional experience in C++ Solid development experience in C# Comfortable working in fast-paced, agile environments (Scrum ceremonies) Nice to haves: Exposure to telecoms technologies such as VoIP, Asterisk, or Kamailio Knowledge of telecoms concepts and components What will you be doing? You will be helping to modernise the platform|||s architecture while delivering live, production-level features and remediating technical debt. This is a hands-on, delivery-focused role where you|||ll play a key part in driving technical improvements, supporting live environments, and contributing to a more modern, maintainable system. Further responsibilities include:...

Contract Software Engineer (C++/C#) / Manchester / 12 Month Contract Are you a skilled Software Engineer with solid experience in both C++ and C#? Join a high-performing team working on a critical HealthTech platform that is used widely across the globe! What do we need from you? Strong professional experience in C++ Solid development experience in C# Comfortable working in fast-paced, agile environments (Scrum ceremonies) Nice to haves: Exposure to telecoms technologies such as VoIP, Asterisk, or Kamailio Knowledge of telecoms concepts and components What will you be doing? You will be helping to modernise the platform's architecture while delivering live, production-level features and remediating technical debt. This is a hands-on, delivery-focused role where you'll play a key part in driving technical improvements, supporting live environments, and contributing to a more modern, maintainable system. Further responsibilities include: Collaborating...

Contract Software Engineer (C++/C#) / Manchester / 12 Month Contract Are you a skilled Software Engineer with solid experience in both C++ and C#? Join a high-performing team working on a critical HealthTech platform that is used widely across the globe! What do we need from you? Strong professional experience in C++ Solid development experience in C# Comfortable working in fast-paced, agile environments (Scrum ceremonies) Nice to haves: Exposure to telecoms technologies such as VoIP, Asterisk, or Kamailio Knowledge of telecoms concepts and components What will you be doing? You will be helping to modernise the platform's architecture while delivering live, production-level features and remediating technical debt. This is a hands-on, delivery-focused role where you'll play a key part in driving technical improvements, supporting live environments, and contributing to a more modern, maintainable system. Further responsibilities include:...

Contract Software Engineer (C++/C#) / Manchester / 12 Month Contract Are you a skilled Software Engineer with solid experience in both C++ and C#? Join a high-performing team working on a critical HealthTech platform that is used widely across the globe! What do we need from you? Strong professional experience in C++ Solid development experience in C# Comfortable working in fast-paced, agile environments (Scrum ceremonies) Nice to haves: Exposure to telecoms technologies such as VoIP, Asterisk, or Kamailio Knowledge of telecoms concepts and components What will you be doing? You will be helping to modernise the platform's architecture while delivering live, production-level features and remediating technical debt. This is a hands-on, delivery-focused role where you'll play a key part in driving technical improvements, supporting live environments, and contributing to a more modern, maintainable system. Further responsibilities include: Collaborating...

Contract Software Engineer (C++/C#) / Manchester / 12 Month Contract Are you a skilled Software Engineer with solid experience in both C++ and C#? Join a high-performing team working on a critical HealthTech platform that is used widely across the globe! What do we need from you? Strong professional experience in C++ Solid development experience in C# Comfortable working in fast-paced, agile environments (Scrum ceremonies) Nice to haves: Exposure to telecoms technologies such as VoIP, Asterisk, or Kamailio Knowledge of telecoms concepts and components What will you be doing? You will be helping to modernise the platform's architecture while delivering live, production-level features and remediating technical debt. This is a hands-on, delivery-focused role where you'll play a key part in driving technical improvements, supporting live environments, and contributing to a more modern, maintainable system. Further responsibilities include:...

Backend Python/Django/Go Developer - 6 Month Contract (Likely Extension) - Fully Remote (UK) - (Outside IR35) Are you a skilled Backend Developer with a passion for building robust and scalable applications? We're looking for a talented individual to join our team on a 6-month contract basis, with a strong likelihood of extension. What you'll bring: Solid Backend Expertise: 3+ years of recent and demonstrable experience in Django is essential. Python Go Advantage: Experience with Go (Golang) is highly preferable but not mandatory. Application Development: Proven experience in building backend systems for mobile and/or web applications. Cloud Proficiency (Bonus): Experience working with AWS is a significant plus. Full Stack Advantage (Beneficial): While primarily a backend role, full-stack capabilities would be beneficial. The Opportunity: Contract Length: 6 months with a strong possibility of extension. Location: Fully remote...

Senior Software Engineer JavaScript / TypeScript - GIS - AWS £(phone number removed) per day, Outside IR35 Start ASAP - initially until the end of September ( + Likely extensions) Fully Remote - Must be UK based One of our valued partners requires the services of 2 x highly experienced Senior Software Engineers to join a project team delivering a large, high profile, Government program. Prior public sector or government sector experience would he highly desirable, and strong communication and customer engagement skills are essential! Core Responsibilities: Design, build, and deploy production-ready code for the project using the departments development skeleton framework Implement geospatial data visualisation features using specialised 3rd party libraries integrated with a focus on existing (back-end) code Develop secure integration with the departments audit service and implement security controls as agreed with Security Architects Create accessible...

Senior ETL / Data Lake Engineer, Data Engineering | FinOps, Data Transformation | Contract £500-600 per day - Outside IR35 | Hybrid – London | 9-months Contract Company: Our client is one with international reach and a highly regarded reputation that specialises in FinTech software for some of the largest banks in the world. They are in the middle of a major digital transformation — reimagining its core data infrastructure to power smarter decisions, faster operations, and better customer outcomes. Building a modern data lake to power its digital transformation — and we’re hiring an ETL / Data Lake Engineers to build out the pipelines and ingestion flows that feed the whole engine. Job opportunity details for Senior ETL / Data Lake Engineer, Data Engineering | FinOps, Data Transformation | Contract £500-600 per day - Outside IR35 | Hybrid – London | 9-months Contract You’ll work with: Tools like Airflow, Airbyte, Fivetran AWS S3, Athena, Delta...

Senior MLOps Engineer, Data Engineering | FinOps, Data Transformation | Contract £700-800 per day - Outside IR35 | Hybrid – London | 9-months Contract Company: Our client is one with international reach and a highly regarded reputation that specialises in FinTech software for some of the largest banks in the world. They are in the middle of a major digital transformation — reimagining its core data infrastructure to power smarter decisions, faster operations, and better customer outcomes. Our client is transforming its data infrastructure — and a key part of that is bringing machine learning into production the right way. Job opportunity details for Senior MLOps Engineer, Data Engineering | FinOps, Data Transformation | Contract £700-800 per day - Outside IR35 | Hybrid – London | 9-months Contract We’re looking for a Senior MLOps Engineer to build out robust pipelines that make model deployment repeatable, scalable, and observable. You’ll...

Position: Senior PHP Engineer (Outside IR35) Contract: LTD Contract Start: April or May 2025 Duration: 6 months initially (likely to extend) Location: 100% Remote (Europe) Interview Process: 2 quick stages Language: English Montash is partnering with a forward-thinking high profile software company to help scale their Back End engineering team. We're looking for a Senior PHP Engineer to support the evolution of their complex secure cloud platform. This is a long-term freelance opportunity with an initial 6-month contract and high potential for extension. Tech Environment PHP (primary language) Symfony (framework) - MUST HAVE Doctrine (ORM) PHPUnit (unit + functional testing) - MUST HAVE GitLab CI for CI/CD pipelines Docker for containerization Grafana & Loki for monitoring Bonus: Experience with Rust or NodeJS Key Responsibilities Develop and maintain high-performance, secure Back End systems Take full ownership of complex features...

🚀 Senior React Native Engineer with Team lead experience - 6 month contract - Remote/UK based - Start ASAP - Outside IR35 🚀 My client is urgently looking for a Senior React Native/React Engineer with Management/Team Lead experience, to help build mobile, connected TV, and web applications for an enterprise company. Experience needed: - Engineering management experience who would be a good team lead above all else. - Experience with JavaScript libraries and frameworks such as React Native & React - Proficient in HTML / CSS - Ability to design, develop, test, deploy, and improve software - Skilled in managing project priorities, deadlines, and deliverables - Strong communication skills

Job Title: Infrastructure Engineer (VMware) Location: MOD Corsham (3-4 days on-site) Contract Type: Contract Outside IR35 Salary: £450-470 a day Outside Security Clearance: SC required, DV beneficial or willingness to be processed through a DV clearance The Opportunity: Our client is a leader in digital and software services, supporting critical UK defence and government projects. This role offers the chance to work on advanced cloud hosting platforms for the Royal Navy, playing a key part in securing and optimising mission-critical infrastructure. The Role: As an Infrastructure Engineer, you will work as part of a highly skilled team managing multi-tenant private cloud environments. You will: Design, deploy, and manage software-defined networking (SDN) and VMware NSX-T. Configure and maintain Linux (Ubuntu preferred) and Windows OS environments, including Active Directory. Implement security best practices, system hardening (CIS benchmarks), and vulnerability...

Job Title: Infrastructure Engineer (VMware) Location: MOD Corsham (3-4 days on-site) Contract Type: Contract Outside IR35 Salary: £450-470 a day Outside Security Clearance: SC required, DV beneficial or willingness to be processed through a DV clearance The Opportunity: Our client is a leader in digital and software services, supporting critical UK defence and government projects. This role offers the chance to work on advanced cloud hosting platforms for the Royal Navy, playing a key part in securing and optimising mission-critical infrastructure. The Role: As an Infrastructure Engineer, you will work as part of a highly skilled team managing multi-tenant private cloud environments. You will: Design, deploy, and manage software-defined networking (SDN) and VMware NSX-T. Configure and maintain Linux (Ubuntu preferred) and Windows OS environments, including Active Directory. Implement security best practices, system hardening (CIS benchmarks), and vulnerability...

Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension Urgently hiring for x2 Full stack engineers, experienced required: 6+ years experience working with JavaScript/TypeScript for fast growth product companies. Frontend: React, Sass, and Storybook Backend: Node, Express, PostgreSQL Infrastructure: AWS ClickHouse desirable, but not required. Must have's are: Confidence with performing in Leetcode style interviews (Data Structures and Algorithms) A degree in Computer Science or Software Engineering related Senior Full Stack Engineer Contract Role | JavaScript/Typescript | B2C, Scale-up | UK Fully Remote | £500pd, Outside IR35 | 6 month Contract, likely extension * If interested, please apply here and we will reach out to you if it's a good fit for the client .*

Job Title: Contract Software Engineer (.NET, React, Azure) Location: Hybrid, two days a week in person (one day a week in Leeds and one day a week on customer site in Manchester) Contract Length: 3 month (rolling contract opps) Rate: £400 - £450 a day (outside IR35) About the Role: We’re working with an exciting technology consultancy helping them find a number of talented Software Engineers to join their team on a contract basis. If you're well versed with .NET, React, and Azure, and you love solving problems with great people and great tech, then this opportunity could be right up your alley. You'll work on impactful projects, contributing to cutting-edge solutions while ensuring the highest standards in software development. What You'll Do: Design and develop reliable, scalable .NET applications that drive the client’s innovative solutions. Build slick and responsive user interfaces with React that deliver a seamless user experience....

Job Title: Contract Software Engineer (.NET, React, Azure) Location: Hybrid, two days a week in person (one day a week in Leeds and one day a week on customer site in Manchester) Contract Length: 3 month (rolling contract opps) Rate: £400 - £450 a day (outside IR35) About the Role: We’re working with an exciting technology consultancy helping them find a number of talented Software Engineers to join their team on a contract basis. If you're well versed with .NET, React, and Azure, and you love solving problems with great people and great tech, then this opportunity could be right up your alley. You'll work on impactful projects, contributing to cutting-edge solutions while ensuring the highest standards in software development. What You'll Do: Design and develop reliable, scalable .NET applications that drive the client’s innovative solutions. Build slick and responsive user interfaces with React that deliver a seamless user experience....

Principal Machine Learning Engineer, ADMET | Pharma/BioTech | Series A - Drug discovery B2B Platform | Fully Remote, EU | £ 700-1,200 per day, Outside IR35 | 6-12 months Contract Length The Client: A mission-driven technology company operating in the life sciences domain is seeking a Principal Machine Learning Engineer to lead the technical direction for ADMET (Absorption, Distribution, Metabolism, Excretion, and Toxicity) modeling efforts within its drug discovery platform. The organisation enables collaborative model development across partner organisations while maintaining strict data privacy and ownership, using a federated data infrastructure. In this hands-on, high-impact role, you’ll work at the intersection of machine learning, computational chemistry, and applied research to advance foundational model applications in drug discovery. You'll be the technical authority on ML architecture, experimentation, and strategy, collaborating closely with leadership...

Job Title: Contract Software Engineer (.NET, React, Azure) Location: Hybrid, two days a week in person (one day a week in Leeds and one day a week on customer site in Manchester) Contract Length: 3 month (rolling contract opps) Rate: £400 - £450 a day (outside IR35) About the Role: We’re working with an exciting technology consultancy helping them find a number of talented Software Engineers to join their team on a contract basis. If you're well versed with .NET, React, and Azure, and you love solving problems with great people and great tech, then this opportunity could be right up your alley. You'll work on impactful projects, contributing to cutting-edge solutions while ensuring the highest standards in software development. What You'll Do: Design and develop reliable, scalable .NET applications that drive the client’s innovative solutions. Build slick and responsive user interfaces with React that deliver a seamless user experience....

DevOps & Software Engineer+ 12 Months contract - Extensions likely + Must Hold Active DV + £550- £600 Per Day + Outside IR35 + Malvern On Site To ensure success as a DevOps engineer, you should ensure that all outputs remain safe for public consumption. Ultimately, a top-notch DevOps engineer will demonstrate excellent leadership skills and the capacity to mentor junior staff. DevOps Engineer Responsibilities: Collaborating with coworkers to conceptualize, develop, and release software. Conducting quality assurance to ensure that the software meets prescribed guidelines. Rolling out fixes and upgrades to software, as needed. Securing software to prevent security breaches and other vulnerabilities. Collecting and reviewing customers||| feedback to enhance user experience. Suggesting alterations to workflow in order to improve efficiency and success. Pitching ideas for projects based on gaps in the market and technological advancements. DevOps Engineer Requirements:...

DevOps & Software Engineer + 12 Months contract - Extensions likely + Must Hold Active DV + £550- £600 Per Day + Outside IR35 + Malvern On Site To ensure success as a DevOps engineer, you should ensure that all outputs remain safe for public consumption. Ultimately, a top-notch DevOps engineer will demonstrate excellent leadership skills and the capacity to mentor junior staff. DevOps Engineer Responsibilities: Collaborating with coworkers to conceptualize, develop, and release software. Conducting quality assurance to ensure that the software meets prescribed guidelines. Rolling out fixes and upgrades to software, as needed. Securing software to prevent security breaches and other vulnerabilities. Collecting and reviewing customers' feedback to enhance user experience. Suggesting alterations to workflow in order to improve efficiency and success. Pitching ideas for projects based on gaps in the market and technological advancements. DevOps Engineer...