11 senior software engineer jobs found

Senior Software Engineer - Outside IR35 - Contract   Softwire are hiring a Senior Software Engineer on a contract basis to join an established team working on an exciting project within the Media sector.   What you'll be doing: Working 100% remotely as part of an established, distributed development team Owning your code end-to-end — designing, developing, and testing to release-candidate quality Scoping work and creating well-structured Jira tickets Carrying out code reviews and testing your own and others' code Contributing to estimation and sprint planning Producing clear technical documentation (Confluence experience a plus) Engaging daily with clients on calls — friendly, consultative, and collaborative Actively participating in scrum ceremonies (stand-ups, retros, and more) Supporting and lifting up your wider team   What we're looking for: Strong problem-solving skills and a...

Senior Software Engineer x2 - Outside IR35 - Contract - (Energy Sector)   Softwire is helping deliver a project for a client of ours in the energy sector, and we're growing the team behind the Azure rebuild. We're looking for 2x Full Stack Software Developers, ideally with some data engineering experience, to join the team. You'll work across the stack, from refinement through to deployment, helping the team deliver well-tested, well-documented software while supporting the wider team through sprint ceremonies and code review.   Must have   Strong experience with Python Experience with Azure SQL Experience with Terraform Comfortable working across the full stack, from data layer through to delivery   Nice to have   Polars Temporal React / TypeScript Prior data engineering experience   What you'll be doing   Develop and deliver user stories and technical...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial instruments and systems. Bonus...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial instruments and systems. Bonus...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial...

Senior Engineer, Application Platforms Location: Sheffield, UK hybrid 3 days in office Rate: up to £520/day Umbrella Length: Initially 6 months   The CTO Platform Engineering & Architecture (CTOp) organisation sits within the Chief Technology Office (CTO) and is responsible for building next-gen application and AI platforms that remove toil and reduce operational overhead through integrated controls and open-source solutions – making software delivery faster, safer, and more reliable every time. CTOp also sets architecture and engineering standards, builds core application, developer and AI platforms, and automates controls so teams can move code (or containers) to production quickly and consistently.   Purpose of the Job: This role is a hands-on engineering + DevRel delivery position, focused on shipping practical adoption assets that scale. It supports the bank’s ambition that ~80% of workloads move to app.hsbc in the...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial...

Updated: 21 June 2026 Freelance 8–20 hrs/week Remote (EU/UK)   Are you an experienced software engineer who instinctively spots gaps in technical reasoning and understands the complex realities of software development? Do you have 8 to 20 hours per week available alongside your main job or freelance projects? Join us in shaping how AI understands and applies software engineering expertise at scale.   About the Role 10x.team connects expert freelancers with leading AI labs building next-generation models. We are looking for knowledgeable software engineers based in the EU or UK to enhance the accuracy, depth, and real-world relevance of AI-powered engineering systems.   What You Will Do Review and refine AI-generated outputs related to software engineering, technical documentation, code quality, and practical aspects of software development Evaluate AI responses for technical accuracy, practicality, and alignment...

Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial...

Product Lead Contract role - 3 -5 days per week, 6 months initially Location - Hybrid, Central London office Day rate - Up to £500 per day, depending on experience Reports to - Chief Product Officer, Wonderbly Group   The Opportunity Wonderbly Group has spent years perfecting the art of personalised books, stories that put real people at the heart of the narrative. Now we 're launching a new venture in an adjacent space that moves us deeply: helping people capture the memories, voices and stories of the people they love, and turn them into beautiful, lasting books and journals. The bones of this business already exist. What we need is someone to help us reimagine it from the ground up: new technology, a new digital product, a transformed ecommerce experience and a fresh brand expression, while preserving the emotional heart of what makes this category so meaningful. We're looking for a builder, someone with a genuine passion for...

About The Role Hippo is a rapidly growing digital consultancy passionate about building and delivering transformative digital solutions for a diverse range of Public and Private sector clients. We are looking to recruit talented Content Designers for current contractor opportunities. Due to the variety of our projects and clients, we have Inside IR35 positions available on a short-term or long-term basis with hybrid/flexible working arrangements. Content Designers ensure that people using a service can get the information they need, when they need it, in a format that’s right for them. They work with user researchers to identify what people need from a service. Then they write content to meet those needs, collaborating with UX designs and other members of multidisciplinary teams to shape, test and iterate a service in response to user feedback. Our solutions empower our customers to build and support secure, scalable, and well-engineered systems beyond...