75 senior software engineer jobs found in Leicester

Full job description 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...

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

Location: UK Remote (GMT timezone) Department: Engineering Employment Type: Contract (B2B)   About YLD: Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay. We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done.   About the role As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious, passionate, driven, and enthusiastic. You should be skilled in...

Job Title: Software & DevOps Engineer Location: London Hybrid Duration: 12 months Contract Start Date: November, ASAP Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role This role requires a senior software engineer specializing in Java and JavaScript development to design, build, and secure enterprise-level applications and platforms. The consultant will be a key figure in enhancing software supply chain security and driving the adoption of secure development practices across the software...

Contract - Software & DevOps Engineer Job Type Contract Date published 12-Oct-2026 Req # 25464 Job description Job Title: Software & DevOps Engineer Location: London Hybrid Duration: 12 months Contract Start Date: November, ASAP Day Rate: Competitive (Inside IR35)   Deloitte Working with the Deloitte Associate (Contractor) Programme means we can offer you the opportunity to work on a variation of industry and client related projects. Our aim is to retain the best talent and so when your project end date nears our team of Talent Community Advisors will be working with you to look at alternative projects within the firm that suit your experience should you wish to continue with Deloitte.   The Role This role requires a senior software engineer specializing in Java and JavaScript development to design, build, and secure...

Purpose of the Role We are looking to build a pipeline of potential software contractors with the following skill sets and experience. If you are open to software/controls contract work and your skillset and experience are a good match below, please feel free to send your CV and we may contact you in the near future.   As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - essential Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100).   Outputs/Deliverables To support delivery of high-quality software design based...

Purpose of the Role We are looking to build a pipeline of potential software contractors with the following skill sets and experience. If you are open to software/controls contract work and your skillset and experience are a good match below, please feel free to send your CV and we may contact you in the near future.   As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - essential Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100).   Outputs/Deliverables To support delivery of high-quality software design based...

  Software / Controls Contractor (PLC) Mpac   Location: Hybrid / Tadcaster LS24, UK job type: Contract / Full-time Sector and subsector: Engineering Design Salary: Negotiable salary   Job Specification Job Name: Software Contractor Summary As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - desirable Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100).   Onsite work required...

  Software / Controls Contractor (PLC) Mpac   Location: Hybrid / Tadcaster LS24, UK job type: Contract / Full-time Sector and subsector: Engineering Design Salary: Negotiable salary   Job Specification Job Name: Software Contractor Summary As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - desirable Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100).   Onsite work required...

  Software / Controls Contractor (PLC) Mpac   Location: Hybrid / Tadcaster LS24, UK job type: Contract / Full-time Sector and subsector: Engineering Design Salary: Negotiable salary   Job Specification Job Name: Software Contractor Summary As a Software Contractor you'll be working on the commissioning of our machines in a software capacity. Your expertise will be crucial in: Siemens TIA V19 including Safety Siemens WinCC Unified HMI Motion/Servo drives PackML Keyence Vision Staubli robot - desirable Developing streamlined, efficient code Utilising advanced simulation tools to perfect software before real-world implementation. Ensuring our machines meet the highest safety standards by designing software compliant with the Machine Directive (BS EN 12100).   Onsite work required...

Job Title:  Programme Test   Manager  Location:  Milton Keynes - Hybrid (3 days per week onsite) Role type:  Contract IR35:  Outside IR35 Duration : 6 months (initially) Start Date:  ASAP Security Clearance:  BPSS active ideally (if not eligibility minimum alongside eligibility for SC)   Who we are: We're an award-winning Tech Consultancy, focused in Quality Engineering on a mission to become the UK's #1.   What we do: "Champion and Engineer Quality and Software". Over the past 6 years, we've shaped and transformed our offering so that passion, precision, and attention to every minuscule detail is baked into everything we do. Born from a desire to bring automation expertise to our current and prospective clients, 5 years ago we shaped our offering.   Project Info:...

Role:               Senior Applied AI Engineer (Private Sector Contractor) Rate:               £700–£900 per day, dependent on experience Location:        Hybrid: 2 days a week on site at Harwell, Oxfordshire; remainder remote (UK-based) Engagement: Contract, outside IR35: initial [6]-month term with strong likelihood of extension Start:             Immediate Start   A note from the Founders   Oxford Dynamics is at an inflection point. We build frontier AI for environments where the cost of a wrong decision is high: defence and national security, critical infrastructure, and commercial organisations making high-stakes decisions on complex data. We are growing fast, and the constraint on how fast is no...

Senior TypeScript Engineer (Node.js, AWS Serverless), FinTech Location: London, Manchester, Leeds, Edinburgh or Bristol (flexible hybrid) Rate: £600 per day. Inside IR35 Duration: 6 months About Codurance We're a software craftsmanship consultancy. We build software for clients, and we care about doing it properly: clean code, solid testing, sensible architecture, and teams that keep learning. Our engineers work embedded with client teams, so you get variety, real ownership, and the backing of a wider community of craftspeople who'll challenge you and help you grow. The role We're looking for a senior contract engineer to work on a financial platform where correctness actually matters. You'll design, build, and run TypeScript and Node.js services on AWS serverless infrastructure. You'll work in a small, cross-functional team alongside product, operations, and customer-facing colleagues, and you'll be the person people go to when they're...

Senior TypeScript Engineer (Node.js, AWS Serverless), FinTech Location: London, Manchester, Leeds, Edinburgh or Bristol (flexible hybrid) Rate: £600 per day. Inside IR35 Duration: 6 months About Codurance We're a software craftsmanship consultancy. We build software for clients, and we care about doing it properly: clean code, solid testing, sensible architecture, and teams that keep learning. Our engineers work embedded with client teams, so you get variety, real ownership, and the backing of a wider community of craftspeople who'll challenge you and help you grow. The role We're looking for a senior contract engineer to work on a financial platform where correctness actually matters. You'll design, build, and run TypeScript and Node.js services on AWS serverless infrastructure. You'll work in a small, cross-functional team alongside product, operations, and customer-facing colleagues, and you'll be the person people go to when they're stuck....

Senior TypeScript Engineer (Node.js, AWS Serverless), FinTech Location: London, Manchester, Leeds, Edinburgh or Bristol (flexible hybrid) Rate: £600 per day. Inside IR35 Duration: 6 months About Codurance We're a software craftsmanship consultancy. We build software for clients, and we care about doing it properly: clean code, solid testing, sensible architecture, and teams that keep learning. Our engineers work embedded with client teams, so you get variety, real ownership, and the backing of a wider community of craftspeople who'll challenge you and help you grow. The role We're looking for a senior contract engineer to work on a financial platform where correctness actually matters. You'll design, build, and run TypeScript and Node.js services on AWS serverless infrastructure. You'll work in a small, cross-functional team alongside product, operations, and customer-facing colleagues, and you'll be the person people go to when they're stuck....

Senior TypeScript Engineer (Node.js, AWS Serverless), FinTech Location: London, Manchester, Leeds, Edinburgh or Bristol (flexible hybrid) Rate: £600 per day. Inside IR35 Duration: 6 months About Codurance We're a software craftsmanship consultancy. We build software for clients, and we care about doing it properly: clean code, solid testing, sensible architecture, and teams that keep learning. Our engineers work embedded with client teams, so you get variety, real ownership, and the backing of a wider community of craftspeople who'll challenge you and help you grow. The role We're looking for a senior contract engineer to work on a financial platform where correctness actually matters. You'll design, build, and run TypeScript and Node.js services on AWS serverless infrastructure. You'll work in a small, cross-functional team alongside product, operations, and customer-facing colleagues, and you'll be the person people go to when they're...

We are recruiting for a Contract Senior Java / Kotlin Engineer.  On-site: 2 dpw in Leeds Key skills: strong experience in Java or Kotlin (back-end), and comfortable with TDD (test-driven development). Start date: ASAP Who We Are: AND Digital are a tech company focused on accelerating digital delivery and dedicated to closing the digital skills gap. We’ve been helping organisations build better digital products and stronger digital teams since 2014. We believe our work should always make a remarkable impact for our clients. We do this through our regional offices (or ‘Clubs’) building strong relationships with our partners, so that they are always prioritised by a team within close proximity.  This unique model has driven success for our clients and ourselves, evidenced by our remarkable organic growth since 2014. Today we number more than 1,300 people with Clubs all over the UK, Europe and the USA with plans for global...

Senior TypeScript Engineer (Node.js, AWS Serverless), FinTech Location: London, Manchester, Leeds, Edinburgh or Bristol (flexible hybrid) Rate: £600 per day. Inside IR35 Duration: 6 months About Codurance We're a software craftsmanship consultancy. We build software for clients, and we care about doing it properly: clean code, solid testing, sensible architecture, and teams that keep learning. Our engineers work embedded with client teams, so you get variety, real ownership, and the backing of a wider community of craftspeople who'll challenge you and help you grow. The role We're looking for a senior contract engineer to work on a financial platform where correctness actually matters. You'll design, build, and run TypeScript and Node.js services on AWS serverless infrastructure. You'll work in a small, cross-functional team alongside product, operations, and customer-facing colleagues, and you'll be the person people go to when they're stuck....

Senior TypeScript Engineer (Node.js, AWS Serverless), FinTech Location: London, Manchester, Leeds, Edinburgh or Bristol (flexible hybrid) Rate: £600 per day. Inside IR35 Duration: 6 months About Codurance We're a software craftsmanship consultancy. We build software for clients, and we care about doing it properly: clean code, solid testing, sensible architecture, and teams that keep learning. Our engineers work embedded with client teams, so you get variety, real ownership, and the backing of a wider community of craftspeople who'll challenge you and help you grow. The role We're looking for a senior contract engineer to work on a financial platform where correctness actually matters. You'll design, build, and run TypeScript and Node.js services on AWS serverless infrastructure. You'll work in a small, cross-functional team alongside product, operations, and customer-facing colleagues, and you'll be the person people go to when they're stuck....

Principal Engineer – SC Eligible – Government Projects This role is delivered within secure environments. Candidates must be eligible for UK SC clearance and hold UK citizenship. Join the Mission We are a fast‑growing startup building scalable, high‑quality digital products at pace. Our success depends on strong engineering foundations, pragmatic architecture, and ways of working that enable teams to deliver value continuously. We are looking for a Principal Engineer to play a critical leadership role across our engineering and architecture community. This is an opportunity to shape how we build, not just what we build—embedding effective engineering processes, modern delivery practices, and a culture of continuous improvement as the company scales. This role suits a senior technologist who thrives in ambiguity, enjoys influencing without authority, and wants to leave a lasting imprint on how engineering operates within a growing...