182 software engineer jobs found

Senior Software Engineer - Outside IR35 - Contract (Energy)   About the role   We are looking for a Senior Software Engineer (ideally with some Data Engineering experience) to join our client team in the energy trading sector.   End date is not certain, but likely to be December 2026 or early Q1 2027.   We are looking for experience in the following technologies:   Microsoft Azure ecosystem Understanding of networking & security options in Microsoft Azure Infrastructure-as-code (preferably Bicep) Python   Experience in the below would also be beneficial:   Azure DevOps (pipelines) SQL   We generally spend 2 days per week on-site with the client in central London (Monday & Thursday).   £500-600 per day outside IR35   Start date: 10/08/2026 End date: December 2026 or early Q1 2027   About Softwire  ...

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the brilliant community around...

Senior Software Engineer – RUST   Contract initial 12 months Outside ir35 Hybrid or Remote   Overall Ambition   Solve some of today's most complex hospitality challenges by creating innovative, scalable technology using a modern, open technology stack. Help shape the technical direction of our products while delivering exceptional customer experiences across the USA.   What We're Looking For   We're looking for a Contract Senior Software Engineer to join our passionate, lean, agile, fast-growing and evolving technology team on a permanent basis.   You'll be an experienced engineer who enjoys solving difficult technical problems, building highly scalable systems and helping those around you become better engineers. You'll be comfortable owning complex initiatives from design through to production, influencing technical direction and driving engineering excellence across multiple teams....

Embedded Software Engineer Education : Bachelor’s/Master’s in Electronics & Communication Engineering. Experience: 0 to 3 Yrs Preferred Location : Resident engineer tobe located in PDSL Knowledge Centre, Warwick Science Park, Coventry, UK Core Skills Good proficiency in Embedded C and C++ . Hands-on experience with at least one of the Micro-Controllers such as STM32, NXP, MicroChip, AVR, or ESP32. Understanding of Real-Time Operating Systems and development on bare metal. Ability to implement and debug communication protocols like I2C, SPI, UART, and CAN. Could understand and read Schematics and datasheets. Experience using GDB/JTAG/SWD debuggers, and Logic Analyzers/Oscilloscopes. Note : Position offers a competitive salary or day rate, available as permanent or contract roles (outside IR35).

Location: UK Wide (Hybrid/On-site as required) Outside IR35 - Rate £50-£80 p/h Security Clearance: Must be eligible to obtain and maintain UK Security Clearance (SC) RC Fornax is looking for a Software Engineer – Advanced Signal Processing & AI. This is an exciting opportunity to join a highly skilled engineering team developing cutting-edge software solutions for advanced sensing, tracking, data fusion and artificial intelligence applications within complex maritime and defence environments. Key Responsibilities Design, develop and maintain software solutions supporting advanced signal processing, sensor fusion and tracking applications within maritime and defence environments. Implement, optimise and maintain production-quality software using C++, Python and related technologies. Develop software for sensor modelling, data processing, state estimation, anomaly detection and information fusion. Apply software engineering...

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the brilliant community around...

Senior Software Engineer - AI Interaction Evaluator (Codex / Claude Code, up to $200/hr) We’re looking for highly experienced software engineer (SR+) to help evaluate the quality of interactions with modern coding agents such as OpenAI Codex and Claude Code. This is not a traditional engineering role. You won’t be writing production code. You’ll be evaluating something harder: whether the model thinks like a great engineer.   What This Role Actually Is You will assess how AI coding agents behave in real-world scenarios — focusing on: Whether the response makes sense Whether the preamble and reasoning are useful Whether the output reflects strong engineering judgment Whether the interaction feels right to an experienced developer This role is about engineering taste — not syntax correctness.   What You’ll Be Doing Evaluate AI-generated...

Full Stack Software Engineer (Contract) About algo1 We’re a VC-backed stealth-mode company building behavioural AI solutions for the retail industry. Our platform is designed from the ground up - no legacy, no patchwork systems - just a clean slate and a clear vision. Our mission is to bring the intelligence of modern machine learning directly to the in-store shopping experience. We are taking an almighty swing of the bat; it is difficult, full of risk, and exactly why we are here.   The Role We’re looking for a Full Stack Engineer to work closely with product, design, mobile, and machine learning team members to design & build experiences that re-define in-store shopping. We believe that agentic, LLM-driven workflows are here to stay and are looking for engineers who have embraced this and will being a different perspective to our product development lifecycle. You'll help build engaging & intuitive web experiences and the...

Embedded Software Engineer Education :  Bachelor’s/Master’s in Electronics & Communication Engineering. Experience: 0 to 3 Yrs Preferred Location  : Resident engineer tobe located in PDSL Knowledge Centre, Warwick Science Park, Coventry, UK Core Skills Good proficiency in Embedded C and C++ . Hands-on experience with at least one of the Micro-Controllers such as STM32, NXP, MicroChip, AVR, or ESP32. Understanding of Real-Time Operating Systems and development on bare metal. Ability to implement and debug communication protocols like I2C, SPI, UART, and CAN. Could understand and read Schematics and datasheets. Experience using GDB/JTAG/SWD debuggers, and Logic Analyzers/Oscilloscopes. Note : Position offers a competitive salary or day rate, available as permanent or contract roles (outside IR35).

The Office for National Statistics (ONS) is the UK’s largest producer of official statistics, covering a range of key economic, social and demographic topics. These include measuring changes in the value of the UK economy, estimating the size, geographic distribution and characteristics of the population, and providing indicators of price inflation, employment, earnings, crime and migration.   SC Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance.    As a Software Engineer (GCP, Java), your main responsibilities will be: Develop and maintain scalable, high-quality applications using Java and Spring Boot Design...

Senior Software Engineer - 6 month Contract - Inside IR35 This role is a hybrid position requiring 2 days per week onsite in Glasgow offices.   We are creating a world of opportunity for businesses by responsibly harnessing data and AI to enable positive change. We adapt to our clients needs and then bring our engineering, development and consultancy expertise. Our people and our solutions ensure they head into the future equipped to succeed. Our clients include Tier 1 Banking and Insurance clients, we have also been listed in the Sunday Times Top 100 Fastest Growing Private Companies. The Role Were seeking a Senior Software Engineer to design, architect, and deliver enterprise-grade, cloud-native applications using Java, Python, and modern frameworks. You'll work in a remote-first environment with occasional client site visits, leading technical delivery, shaping architecture decisions, and mentoring engineers to deliver scalable, secure, and...

Location: Manchester Hybrid: 2 days a week in office Duration: 6 months (possible extension)   About the Role We are looking for a Software Engineer II to join our team at Booking.com. In this role, you will own the execution of technical solutions across a suite of 20 services, helping us deliver a steady roadmap of 3–4 service enhancements per quarter. You will focus on high-quality, high-speed backend delivery, building new product features, and implementing crucial service-to-service communication. This role is ideal for a developer who writes clean, testable code and thrives in a high-volume, continuous delivery environment.   What You’ll Do (Key Responsibilities) Deliver Backend Solutions: Write, refactor, and own clean, reusable Java code across multiple services. End-to-End Ownership: Manage services from development through deployment, including monitoring application health and performance in AWS....

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews   The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages.   Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning.   We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the brilliant community around...

Lead Software Engineer (Java, AWS) - Contract Role - Inside IR35 Role Purpose We are looking for a Lead Software Engineer for an initial 6 Month Contract (Inside IR35) - this role will be onsite 2 days a week in our Speke HQ working in our FS squads. The Lead Engineer is a key role within a Software or Data Engineering sub-community providing technical leadership and guidance to Engineers across all squads working with them to deliver and maintain production ready, secure, stable, and performant code in line with TVG Engineering standards in a DevSecOps manner. They lead by example and play an active part of software design, coding, reviews, testing, and debugging. They are at the forefront of solving challenging technical problems, and are responsible for software engineering excellence, innovation, and continuous improvement within the sub-community across all squads they work with. Scope of Role Leadership: Technical mentor and coach to Software/Data...

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...

Embedded Software Engineer Education : Bachelor’s/Master’s in Electronics & Communication Engineering. Experience: 0 to 3 Yrs Preferred Location : Resident engineer tobe located in PDSL Knowledge Centre, Warwick Science Park, Coventry, UK Core Skills Good proficiency in Embedded C and C++ . Hands-on experience with at least one of the Micro-Controllers such as STM32, NXP, MicroChip, AVR, or ESP32. Understanding of Real-Time Operating Systems and development on bare metal. Ability to implement and debug communication protocols like I2C, SPI, UART, and CAN. Could understand and read Schematics and datasheets. Experience using GDB/JTAG/SWD debuggers, and Logic Analyzers/Oscilloscopes. Note : Position offers a competitive salary or day rate, available as permanent or contract roles (outside IR35).

About Us At Chekin.com, we’re building the leading platform for hospitality check-in automation, covering the full guest journey from booking confirmation to check-out. Today, we operate globally across thousands of properties and have grown into a profitable SaaS company, with ambitious plans to scale significantly over the coming years. We are an AI-native company that believes technology, automation, and operational efficiency should be embedded into everything we do — from product development to internal workflows. Our Product & Tech team is made up of ambitious, collaborative, and highly autonomous people who enjoy solving complex technical problems while moving fast.     The Role We are looking for a Backend Engineer to join our Product & Tech team on a full-time B2B contractor basis. The candidate is a backend-strong engineer who, with AI as a force multiplier, owns a slice of product end to end — from...

Senior Engineer, Application Platforms Location: Sheffield, UK hybrid 3 days in office Rate: up to £700/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 next...

Title: Senior Growth Engineer - Contractor 👫 Department: Engineering 🎁 Benefits & Culture: Lottie’s careers page here , Lottie’s tech careers page here 🎥 Meet our CTPO: Solving hard problems in care 💗 Mission: Elevate later life for everybody and build the care sector of the future. 💻 Office Policy: Fully remote, you’ll need to be in Europe. Or hybrid if preferred. 🌍 HQ: London Bridge, London, UK   🔍 The Opportunity: Lottie's marketplace connects millions of families with the right care at the right time. We've built something real - now we need to grow it faster, smarter, and with more precision than a traditional engineering team can. We're looking for a Senior Growth Engineer to join a small, focused Marketplace team and own the full experiment loop - from hypothesis to code to result. You'll work closely with a PM and designer to run high-velocity tests, feed signals back to Google to...

Key Accountabilities Responsibilities will include: · Design, develop and maintain highly available, secure, and performant backend REST API services along with frontend client using Python , Golang, Docker and Cloud-Native services . · Implement and manage database schema changes using Liquibase , ensuring alignment with compliance and audit standards. · Collaborate closely with Architecture and DevOps teams to enhance, maintain and mature Product capabilities/features. · Perform root cause analysis and implement solutions for incidents and performance bottlenecks. Qualifications and experience The ideal candidate for this role will have the below experience and qualifications: · Bachelor’s or Master’s degree in Computer Science or equivalent industry experience. · Comes from Software Engineering background with infrastructure experience. · 5+ years of development experience...