50 senior software engineer jobs found

Senior Software Engineer Broad Oak Based £68.55 an hour Umbrella Inside IR35 12 Month Contract initially. This is a great opportunity to work within one of the UK's leading Defence organisations based In Broad Oak. Typical duties include (but are not limited to): - Design and development of embedded software entities, from specification through to release into service - Support to electronic circuit designers for computing architecture aspects - Architecture design and coding of complex software problems including, but not limited to, digital signal processing, TCP/IP, data recording solutions - Translation of requirements into design detail - Undertake design review activities at various levels - Support other software engineers as appropriate - Specification of bespoke procured items (e.g. procured IP) - Verification of components and sub-systems using a combination of simulation, analysis, test, and assurance techniques - Maintenance of existing designs...

Senior Software Engineer - (9 month contract) Salary: Negotiable Shift: Days Mon-Fri  Location: Remote - Can live anywhere  We are recruiting for an innovative market leader within the industry who are a major player in their field, miles ahead of the competition. This is an opportunity for an experienced Software Engineer to showcase their skills across multiple state-of-the-art automated facilities within the UK. You’ll be based from home and will be focused on software development and JAVA development for highly automated distribution factories across the UK. The Senior software engineer will be involved in some high level software development projects within automated warehouse environments. Non Negotiable skills required for the Senior Software Engineer 5 years minimum experience in JAVA development Extensive software development experience Understanding of distribution and automated warehouse environments Strong interpersonal skills to liaise with site teams, colleagues,...

Senior Software Engineer - (9 month contract) Salary: Negotiable Shift: Days Mon-Fri  Location: Remote - Can live anywhere  We are recruiting for an innovative market leader within the industry who are a major player in their field, miles ahead of the competition. This is an opportunity for an experienced Software Engineer to showcase their skills across multiple state-of-the-art automated facilities within the UK. You’ll be based from home and will be focused on software development and JAVA development for highly automated distribution factories across the UK. The Senior software engineer will be involved in some high level software development projects within automated warehouse environments. Non Negotiable skills required for the Senior Software Engineer 5 years minimum experience in JAVA development Extensive software development experience Understanding of distribution and automated warehouse environments Strong interpersonal skills to liaise with site teams, colleagues,...

Senior Software Engineer - (9 month contract) Salary: Negotiable Shift: Days Mon-Fri  Location: Remote - Can live anywhere  We are recruiting for an innovative market leader within the industry who are a major player in their field, miles ahead of the competition. This is an opportunity for an experienced Software Engineer to showcase their skills across multiple state-of-the-art automated facilities within the UK. You’ll be based from home and will be focused on software development and JAVA development for highly automated distribution factories across the UK. The Senior software engineer will be involved in some high level software development projects within automated warehouse environments. Non Negotiable skills required for the Senior Software Engineer 5 years minimum experience in JAVA development Extensive software development experience Understanding of distribution and automated warehouse environments Strong interpersonal skills to liaise with site teams, colleagues,...

Senior Java Software Engineer (Contractor) UK-Based | Fully Remote Outside IR35   Contract to Dec 2026 We are supporting a global engineering and technology organisation in the search for a Senior Java Software Engineer (Contractor) to join their Performance Engineering & Research team. This is a fully remote opportunity (UK-based candidates only) working on robust, scalable software that supports sophisticated control algorithms and performance optimisation systems. The Role You will design, build and maintain efficient, high-performance Java applications, contributing across the full software development lifecycle including: Requirements analysis and system design Development and implementation Testing and deployment CI/CD and automation improvements Technical documentation Working under the guidance of the Principal Performance Engineer, you will collaborate with solution design, integration, simulation and delivery teams globally. What We’re Looking For Minimum 5...

Senior Software Engineer x 2 Portsmouth £68.55 Inside IR35 12 month contract About the Role We are seeking 2 highly skilled and motivated Senior Software Engineers to join a growing engineering team. This is an opportunity to work on mission-critical systems that support national security, advanced defence platforms, and next-generation technologies. As a senior member of the team, you will play a key role in designing, developing, and delivering high-integrity software solutions within a secure and collaborative environment. What you'll be doing: Designing, reviewing, developing, testing, documenting, configuring and delivering software products to the agreed standards and procedures using the specified tools, within schedule and estimates Resolving the complex challenges, issues and faults associated with installation, commissioning, operation and performance of systems Providing specialist technical advice and guidance to other professionals, technician engineers and/or...

Senior Software Engineer x 2 Portsmouth (Hybrid working) £68.55 Inside IR35 12 month contract About the Role We are seeking 2 highly skilled and motivated Senior Software Engineers to join a growing engineering team. This is an opportunity to work on mission-critical systems that support national security, advanced defence platforms, and next-generation technologies. As a senior member of the team, you will play a key role in designing, developing, and delivering high-integrity software solutions within a secure and collaborative environment. What you'll be doing: Designing, reviewing, developing, testing, documenting, configuring and delivering software products to the agreed standards and procedures using the specified tools, within schedule and estimates Resolving the complex challenges, issues and faults associated with installation, commissioning, operation and performance of systems Providing specialist technical advice and guidance to other professionals, technician...

Location: Tring (Predominately onsite with flex where project allows) Duration: 4-6 month contract IR35: Outside IR35 Role detaills: Our client, a leading entity in the Defence & Security sector, is seeking a highly motivated Senior Software Engineer to join them on a contract basis - The role will encompass the design and development of a web-based control and monitoring dashboard application for an antenna terminal system. Key Responsibilities: Design and develop a web-based control and monitoring dashboard application for an antenna terminal system. Engage in the full design life cycle from specifications generation to thorough regression testing of pre-production units. Build and maintain React/Next.js frontend applications and NestJS backend services within a shared pnpm monorepo environment. Integrate user-facing components with backend services using various communication protocols (REST, WebSockets, SNMP, MQTT, etc.). Develop the GUI using a mix of off-the-shelf UI...

POSITION DESCRIPTION: * Design, create and build test cases, test plans and test strategies for multiple software platforms along with automation test scripts for all applications and convert manual test preparation into automated test preparation. * Collaborate with the Software Development teams and other Product Owners to understand the requirements and develop and manage the test scenarios for all the new development projects. * Communicate, prioritize and track test execution, defects and issues appropriately and recommend corrective action whenever required. * Facilitate functional testing, regression testing, UI testing, and unit testing for all new features in cross browser environments including mobile devices. * Provide leadership and facilitate problem resolution, and coaching among Product Owners and developers, while mentoring junior QA team members and offshore teams. * Work with development team and Database Administrators to identify system...

Senior / Principal C&I Engineer – Staff Location: West Wales This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical, Renewable Energy, Hydrogen and Nuclear sectors. TUV Certified status would be a bonus, though not essential. Role & Responsibilities * Undertaking work providing Process Engineering support to a range of CAPEX and OPEX projects. * Performing safety specification and certification of safety instrumented systems. * Carry out SIL Verification using simplified equations. * Undertake design and checking of deliverables according to discipline and area of expertise. * Checking the quality of design work to ensure compliance with agreed client design specifications. * Preparation and checking of deliverables including drawings, schedules, datasheets, specifications, (input to control philosophies and narratives if applicable). * Development...

Senior Electrical Engineer – Contract – Remote Location: Remote / Hybrid Location: Hybrid This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical and Renewable Energy sectors. Our client can accommodate a hybrid working pattern with alternate weeks wfh / in the office in West Wales. The role will be outside IR35. Role & Responsibilities * Undertake design and checking of deliverables according to discipline and area of expertise. * Checking the quality of subcontractor design work to ensure compliance with agreed client design specifications. * Preparation and checking of deliverables including drawings, schedules, datasheets, specifications, (input to control philosophies and narratives if applicable). * Must understand wiring diagrams, control logic diagrams, system descriptions, system calculations, 1-line and 3-line AC drawings, AC & DC schematics, and...

Senior / Principal C&I Engineer – Contract Location: West Wales This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical, Renewable Energy, and Hydrogen sectors. TUV Certified status would be a bonus, though not essential. Role & Responsibilities * Undertaking work providing Process Engineering support to a range of CAPEX and OPEX projects. * Performing safety specification and certification of safety instrumented systems. * Carry out SIL Verification using simplified equations. * Undertake design and checking of deliverables according to discipline and area of expertise. * Checking the quality of design work to ensure compliance with agreed client design specifications. * Preparation and checking of deliverables including drawings, schedules, datasheets, specifications, (input to control philosophies and narratives if applicable). * Development of...

Location: West Wales This is an excellent opportunity to join a leading engineering business during a period of continued growth as they support the Oil & Gas, Petrochemical, Renewable Energy and Nuclear sectors. Our client will consider applicants for either a staff or contract position – for a contractor the role will be outside IR35. Role & Responsibilities * Undertake design and checking of deliverables according to discipline and area of expertise. * Checking the quality of subcontractor design work to ensure compliance with agreed client design specifications. * Preparation and checking of deliverables including drawings, schedules, datasheets, specifications, (input to control philosophies and narratives if applicable). * Must understand wiring diagrams, control logic diagrams, system descriptions, system calculations, 1-line and 3-line AC drawings, AC & DC schematics, and be able to size equipment and perform cable sizing calculations * Participation...

Job Title: Senior Backend Engineer Location: Dunton Essex - 4 days minimum mandatory onsite Rate: £67.15ph Umbrella Co Basis (Inside IR35) Employment Type: Contract (31.12.26) Hours: Standard 37.5 Hours Per Week Reference: F56475 The Senior Backend Engineer plays a pivotal role in driving the technical success in our backend teams. This position involves architecting scalable, resilient, and secure backend solutions and overseeing the technical completion of critical development tasks, often in ambiguous situations. The Senior Backend Engineer is responsible for ensuring that backend code and architectural reviews are aligned with organisational goals, facilitating productive technical discussions, and making decisions to resolve complex backend engineering issues effectively. In this role, the Senior Backend Engineer supports the technical direction for backend development, offering guidance to team members and exemplifying technical excellence in backend practices....

Senior Highway Engineer A leading highways contractor is seeking an experienced Senior Highways Engineer to join its expanding highway engineering team based in Central London. The contractor delivers highways maintenance and improvement services across major TfL contracts, and the successful candidate will support delivery and design activities across a rapidly growing workload. The role will be varied and hands-on, combining highways design with technical support to the in-house design team. You will be joining a motivated team co-located with the delivery and design functions, enabling close collaboration and high-quality project outcomes. Role Responsibilities ·Deliver multidisciplinary highways projects from proposition through to construction, balancing competing demands and priorities. ·Review and approve highways infrastructure designs and technical outputs. ·Prepare and review technical reports, drawings, specifications, and schedules. ·Provide construction support...

Site Agent - Civil Engineering Project Position: Site Agent Location: East Anglia Project Type: Civil Engineering (Roads / Bridges / Infrastructure / Utilities) About the Role We are seeking an experienced and highly motivated Site Agent to join our team on a major civil engineering project. The successful candidate will take full responsibility for managing site operations, ensuring projects are delivered safely, on time, within budget, and to the highest quality standards. Key Responsibilities Delivering civil engineering works involving roads, bridges, infrastructure and utilities Supporting commercial team and have awareness of NEC Form of contract Oversee daily site operations and coordinate subcontractors, suppliers, and site staff Ensure compliance with health, safety, environmental, and quality standards Manage project schedules and monitor progress against programme Prepare method statements, risk assessments, and progress reports Control project costs, including...

The Role Responsible for the development and management of project schedules. Establishes project breakdown structures and coding structures. Owns and manages the project baseline and monitors change. Understands and timelines are met. Provide project stakeholders with detailed performance reporting. Supports and mentors juniors personnel. Responsibilities Communicating with multi-level stakeholders to understand project goals, context and priorities. Manage/develop project schedules for the construction phase according to standard processes and procedures. A key team member in the coordination and management of projects. Gather information from stakeholders as required. Develop project reporting requirements, meeting cadence and reporting drumbeats. Perform schedule updates and monitor project progress against the baseline. Provide a detailed analysis of project status using industry standard measures and KPIs. Identify risks and opportunities within the schedule, supporting...

Contract Senior Civil Engineer – Drainage & Highways 📍 Hampshire/Bristol or Cardiff offices - Hybrid 💰 Competitive Hourly Rate (Outside IR35 considered) A busy civil engineering consultancy is looking to appoint an experienced Senior Civil Engineer on a contract basis. This role will focus primarily on residential and commercial development schemes, with an emphasis on drainage and adoptable highways design. The Role You will be responsible for: Surface & foul water drainage design SuDS strategies and detailed design Flood Risk Assessments S104 drainage agreements S38 & S278 highway design and approvals Liaison with LLFAs, Environment Agency and Water Authorities Supporting projects from feasibility through to technical approval This is a hands-on technical role suited to someone comfortable working autonomously and delivering compliant, buildable solutions. Software Required (some of - not all are required) MicroDrainage Site 3D Causeway Flow Civil...

Contract Senior Civil Engineer – Drainage & Highways 📍 Remote Working available 💰 Competitive Hourly Rate (Outside IR35 considered) A busy civil engineering consultancy is looking to appoint an experienced Senior Civil Engineer on a contract basis. This role will focus primarily on residential and commercial development schemes, with an emphasis on drainage and adoptable highways design. The Role You will be responsible for: Surface & foul water drainage design SuDS strategies and detailed design Flood Risk Assessments S104 drainage agreements S38 & S278 highway design and approvals Liaison with LLFAs, Environment Agency and Water Authorities Supporting projects from feasibility through to technical approval This is a hands-on technical role suited to someone comfortable working autonomously and delivering compliant, buildable solutions. Software Required (some of - not all are required) MicroDrainage Civils 3D Causeway Flow About You Strong...

A well-established, design-led civil engineering consultancy is looking to appoint an experienced Contract Senior Civil Engineer on a long-term, Outside IR35 basis. This is a fully remote role with a strong pipeline of secured work across commercial, industrial and data centre developments. The Role You’ll take ownership of infrastructure packages from concept through detailed design, with a particular focus on: Detailed levels strategy Surface & foul drainage design Drainage slope design and optimisation External works coordination Technical delivery for planning and construction stages Projects include large commercial schemes, industrial developments and major data centre infrastructure. Software MicroDrainage (essential) What We’re Looking For Proven UK development infrastructure experience Strong background in commercial / industrial schemes Confident working autonomously in a remote environment Able to deliver technically sound, buildable drainage and...