• United Kingdom Jobs Expertini profile avatar

    • Software Engineer C Python Java Defence Tech Jobs in UK

    Professional job seekers finding United Kingdom jobs through Expertini
    750,000+ professionals on Expertini 750,000+ Candidates
    Join our global community
    Explore Leading Employers
    High-Paying Careers
    Expertini Penguin Mascot Resume Score™
    Resume Score™ Instantly
    Upload Your CV
    Quick 30-second process

    Apply Today & Jumpstart Your Career on Expertini, Trusted Since 2008.

    1. Expertini
    2. United Kingdom
    3. Jobs
    4. Software Engineer C Python Java Defence Tech Jobs in United Kingdom

    5. Download PDF

    Reset

    Create Job Alert
      Add Alert

     
     
    Create Alert
     
    Reset

    Senior GenAI Platform Engineer

    A global information provider is seeking a Senior Software Engineer II to drive architectural decisions and develop generative AI services. The ideal candidate should have over 5 years of software engineering experience, deep expertise in Python or Java, and strong experience with Kubernetes. Responsible for des ...

    Platform Engineer: Distributed Systems & Cloud

    A leading technology company in London is seeking a skilled software engineer to join their Platform Engineering team. The role involves building and maintaining critical financial infrastructure, working on high-availability distributed systems, and enhancing developer tooling. Ideal candidates will have 3+ yea ...

    Senior Software Engineer, Unified Platform Global Markets

    A diversified trading firm in Greater London is seeking a Senior Software Engineer to join their Unified Platform team. The role involves developing software solutions for data acquisition and visualization while collaborating closely with internal users. Candidates should have strong experience in Java or Pytho ...

    ML Software Engineer: Build Production Models

    Starling is seeking a skilled Software Engineer to join their ML Projects team in Greater London. This role requires building and maintaining features that utilize machine learning models within their banking platform. Candidates should have a strong background in software engineering, experience in delivering s ...

    Backend Engineer Crypto Trading Platform (Go)

    Talos, based in London, is seeking a Software Engineer to build high-performance backend systems for crypto trading. You will work on various components including order routing and risk systems, ensuring performance and security in a fast-paced environment. Candidates should have over 3 years of software enginee ...

    Staff Software Engineer Billing Platform & Microservices

    A leading Fintech company in Northern Ireland seeks a Staff Software Engineer to design and optimize billing services in a fast-paced team. The ideal candidate will have over 8 years of software development experience, particularly in Java and Python. The company offers a competitive salary, a hybrid work model, ...

    Senior Software Engineer, National Security – Hybrid

    A leading technology company based in Gloucester is seeking a Senior Software Engineer to join their National Security team. This role involves designing, coding, and testing software while mentoring junior developers. Candidates should have a strong command of back-end programming languages like Java and Python ...

    Senior Software Engineer, Unified Platform Global Markets

    A leading trading firm in the UK is seeking a Senior Software Engineer to join their Unified Platform organization. This role involves developing tools for data acquisition, storage, and visualization, while collaborating closely with analysts and traders. The ideal candidate will have 2-3 years of software deve ...

    Senior Software Engineer — Space Systems (Hybrid, ESOP)

    A technology firm is looking for a Senior Software Engineer to join their team in Tipton, UK. The position involves software development for space communication systems and requires an active Secret clearance. Candidates should have a BS in Computer Science and 3-6 years of development experience, with skills in ...

    Senior GenAI Platform Engineer

    A global information provider is seeking a Senior Software Engineer II to drive architectural decisions and develop generative AI services. The ideal candidate should have over 5 years of software engineering experience, deep expertise in Python or Java, and strong experience with Kubernetes. Responsible for des ...

    DV‑Cleared Senior Software Engineer — Secure Systems

    A prominent UK security agency seeks a Senior Software Engineer to tackle mission-critical challenges in Cheltenham. You'll design, develop, and maintain software solutions using languages like Java, Python, and more. The job includes mentoring and working with cross-functional teams while engaging with various ...

    Senior Software Engineer, Unified Platform Global Markets

    A diversified trading firm in Greater London is seeking a Senior Software Engineer to join their Unified Platform team. The role involves developing software solutions for data acquisition and visualization while collaborating closely with internal users. Candidates should have strong experience in Java or Pytho ...

    Senior Software Engineer Conversational AI in Healthcare

    A healthcare technology company in Birmingham is looking for a Senior Software Engineer to enhance their innovative conversational agent platform. The role involves designing and implementing scalable solutions, collaborating with cross-functional teams, and mentoring junior engineers. The ideal candidate has ov ...

    Senior Software Engineer – Full Stack & Scalable Systems

    GOOGLE is looking for a Software Engineer in Greater London to develop next-generation technologies that impact billions of users. You'll participate in design reviews, review code for best practices, and work on full-stack development using languages like Java, Python, and JavaScript. A Bachelor’s degree or equ ...

    Engineering Lead: Architecting Scalable Systems

    JPMorgan Chase & Co. is seeking an experienced software engineer in Greater London. The role involves leading system design and development using Java or Python, driving technical improvements, and mentoring junior engineers. Candidates should possess hands-on experience in software development, a deep understan ...

    Senior Software Engineer – Full Stack & Scalable Systems

    GOOGLE is looking for a Software Engineer in Greater London to develop next-generation technologies that impact billions of users. You'll participate in design reviews, review code for best practices, and work on full-stack development using languages like Java, Python, and JavaScript. A Bachelor’s degree or equ ...

    Engineering Lead: Architecting Scalable Systems

    JPMorgan Chase & Co. is seeking an experienced software engineer in Greater London. The role involves leading system design and development using Java or Python, driving technical improvements, and mentoring junior engineers. Candidates should possess hands-on experience in software development, a deep understan ...

    Senior Software Engineer up to £75k DOE ID48299

    Are you a hands‑on software engineer who enjoys solving complex technical problems? Do you want to shape software that connects with advanced hardware systems? Would you like to mentor others while staying close to the code? Our client is looking for a Senior Software Engineer </ ...

    Senior Software Engineer up to £75k DOE ID48299

    Are you a hands‑on software engineer who enjoys solving complex technical problems? Do you want to shape software that connects with advanced hardware systems? Would you like to mentor others while staying close to the code? Our client is looking for a Senior Software Engineer </ ...

    Expert Backend Engineer

    Requirements 8+ years of experience with Backend Engineering in a high-level programming language (e.g. Java, C#, Golang) Experience with cloud platforms (e.g. AWS, GCP, Azure) Experience with microservices based architecture Experience with databases and messa ...

    Ultra‑Low Latency Trading Production Engineer

    A leading quantitative investment firm is seeking a Production Engineer to join its dynamic team in Greater London. This role involves building and maintaining scalable trading environments, ensuring the reliability of electronic trading systems, and automating processes within a fast-paced environment. Candidat ...

    Sports AI Engineer Data, LLMs & Innovation (Remote)

    Flutter UK & Ireland is seeking an AI Engineer to join its team in Leeds. This role combines a passion for sports with cutting-edge technical skills, focusing on developing innovative data products for racing and sports fans. Responsibilities include collaborating across teams to deliver impactful projects and m ...

    Senior Full Stack Engineer: Ownership, AI, Stock Options

    Be-IT is seeking a Senior Engineer in Edinburgh who wants to have a meaningful impact on product development. In this role, you'll work with modern technologies like React and TypeScript on the frontend and have the flexibility to work with various backend technologies such as Node.js, Python, Java, Go, or C#. T ...

    Senior Full Stack Engineer: Ownership, AI, Stock Options

    Be-IT is seeking a Senior Engineer in Edinburgh who wants to have a meaningful impact on product development. In this role, you'll work with modern technologies like React and TypeScript on the frontend and have the flexibility to work with various backend technologies such as Node.js, Python, Java, Go, or C#. T ...

    AI Driven Forward Deployed Software Engineer

    Indicium AI is searching for a Forward Deployed Software Engineer in Greater London. You will directly engage with client engineering teams to redesign their software development processes using AI technologies like Claude Code. This role requires at least 5 years of software engineering experience, a strong und ...

    Lead Software Engineer: AI Driven Delivery (Remote)

    Scott Logic in Newcastle upon Tyne is seeking a Lead Agentic Software Engineer to work at the forefront of AI-augmented software delivery. You will lead a multidisciplinary team, tackling challenging software problems while building relationships with clients and advising on technology decisions. The role requir ...

    AI Driven Client Facing Forward Deployed Software Engineer

    Oliver Bernard is seeking a Forward Deployed Software Engineer to join a high-growth AI deployment company. In this role, you will embed with teams, build AI-native workflows from start to finish, and influence software delivery in various sectors such as finance, energy, and healthcare. Applicants should have o ...

    Backend Engineer – Scalable Data & APIs

    A leading software company based in Greater London is seeking a passionate Backend Software Engineer to architect, develop, and maintain high-performance backend systems. You will collaborate with cross-functional teams to create sophisticated data solutions, optimize code for speed, and build robust APIs. The i ...

    Lead Software Engineer: AI Driven Delivery (Remote)

    Scott Logic in Newcastle upon Tyne is seeking a Lead Agentic Software Engineer to work at the forefront of AI-augmented software delivery. You will lead a multidisciplinary team, tackling challenging software problems while building relationships with clients and advising on technology decisions. The role requir ...

    AI Driven Client Facing Forward Deployed Software Engineer

    Oliver Bernard is seeking a Forward Deployed Software Engineer to join a high-growth AI deployment company. In this role, you will embed with teams, build AI-native workflows from start to finish, and influence software delivery in various sectors such as finance, energy, and healthcare. Applicants should have o ...

    Senior Software Engineer — Sell Side Trading Platform

    A leading financial technology company based in London is seeking a Senior Software Engineer to design and develop high-performance trading software. With over 5 years of programming experience in languages such as C++ or Java, you'll enhance the functionality within the trading environment. This role promises c ...

    Senior Embedded Software Engineer Medical Devices, Real Time C

    A leading technology design consultancy in Royal Leamington Spa is seeking a Senior Embedded Software Engineer to develop and document medical device software. The ideal candidate will have over 5 years of experience with real-time software in embedded C, excellent communication skills, and a relevant degree. Th ...

    Software Engineer – C#/.NET | Banking | Up to £100k + Bonus

    Overview Software Engineer – C#/.NET | Banking | Up to £100k + Bonus My client is an elite global bank who are recruiting for a C#/.NET software engineer with a passion for performance, precision, and solving complex problems at scale. This software development team requires an agile and ve ...

    C++ Software Engineer Hybrid working £70,000 £350,000 Base (+ Bonus)

    C++ Software Engineer - Hybrid working - £70,000 - £350,000 Base (+ Bonus) Job title: C++ Software Engineer Client: Elite Algorithmic Market Making Firm Location: London / Hybrid My client are seeking a C++ Software Engineer who will play a critical role in developing and ...

    Senior Software Engineer: Lead C++/Embedded On Site Surrey

    Premier IT is seeking a Senior Software Engineer to join their team in East Horsley, Surrey. This on-site position involves leading software design and development on complex defence projects. The ideal candidate will have a degree in Engineering or a related field, strong C++ skills, and experience in software ...

    Real Time C++ Software Engineer (Qt/QML) – Sensors & Embedded

    A leading technology solutions provider is seeking an experienced Software Engineer to join their Fareham team. You will be involved in designing robust backend software and integrating user interfaces for complex systems. The ideal candidate should have solid commercial experience with C++, demonstrate hands-on ...

    Senior Software Engineer with C# .net Fixed Income FX

    C# .NET Software Developer with FX and Fixed Income Our Client is a niche boutique broker specialising in FX. They are looking to recruit a C# .NET Software Developer with at least 3 to 5 years proven track record of developing with C# .NET. The Client would like meet candidates i ...

    Embedded Software Engineer (C++/Rust) – Real‑Time Network Security

    A leading technology firm based in the UK is seeking Software Engineers to work on impactful projects in network security. Candidates should possess 2 to 5 years of experience in software engineering and be eligible for UK Security Clearance. Key skills include proficiency in Modern C++ and Python. The company v ...

    Software Engineer (.NET/C#) — 4‑Day Week On‑Site

    Candour, a family-owned manufacturing company near Preston, is seeking a Motivated Software Developer with expertise in .NET and C#. This role offers a competitive salary ranging from £50,000 to £70,000 depending on experience and a unique option for a 4-day work week. Responsibilities include developing softwar ...

    Senior C++ Software Engineer – Test Frameworks (Low Latency Trading)

    Senior C++ Software Engineer – Test Frameworks (Low Latency Trading) Templeton & Partners are urgently seeking a Senior C++ Software Engineer specialising in automated test framework development to join a high-performing engineering team working on a latency‑sensitive algorithm ...

    Remote Graduate Software Engineer – Train in C#, PHP, SQL

    Scott-Merrick is looking for a Graduate Software Developer to join their Agile team remotely across the UK. The role requires a First-Class Computer Science degree and offers a starting salary of £25k with opportunities for raises post-probation. The position includes comprehensive training in C#, PHP, and SQL, ...

    Senior C++ Software Engineer Systematic Trading 12 Month Contract!

    Senior C++ Software Engineer - Systematic Trading Global Trading & Supply | High-Performance Systematic Trading Technology As a Senior C++ Software Engineer , you'll work closely with technologists, quants, and traders to design, optimise, and scale our i ...

    Graduate Software Engineer C#, AWS, On site in Newcastle

    Oliver Bernard is seeking a Graduate Software Developer in Newcastle upon Tyne, offering a salary up to £35k plus bonuses. Candidates should possess a 1st from a Russell Group University and ideally have experience in C#, SQL, and AWS, among other languages. This role offers a unique opportunity to work on green ...

    C# Backend Software Engineer hiring all levels (grad senior)

    Job Title: Senior Software Engineer (C#/.NET) Location: Newcastle Company: Consultancy Salary: Up to 130k (depending on experience) Platform Recruitment has partnered with a high-calibre consultancy that is growing rapidly and building out new ...

    C# Backend Software Engineer hiring all levels (grad senior)

    Job Title: Senior Software Engineer (C#/.NET) Location: Newcastle Company: Consultancy Salary: Up to 130k (depending on experience) Platform Recruitment has partnered with a high-calibre consultancy that is growing rapidly and building o ...

    C# Backend Software Engineer hiring all levels (grad senior)

    Job Title: Senior Software Engineer (C#/.NET) Location: Newcastle Company: Consultancy Salary: Up to 130k (depending on experience) Platform Recruitment has partnered with a high-calibre consultancy that is growing rapidly and building o ...

    Senior Embedded Avionics Software Engineer (C/Ada/Rust) Hybrid

    A leading technology company in defence is seeking a Senior Software Engineer in Northampton to develop next-generation avionics systems. This role involves responsibilities in software requirements analysis, design, and the integration of embedded software components. The ideal candidate has experience with emb ...

    Lead Software Engineer C# .NET API on AWS | Remote

    A leading SaaS tech company in Nottingham is looking for a Lead Software Engineer / Developer (C# .Net API AWS) to join their Agile team. This role offers a salary up to £80k plus benefits, including 25 days holiday and health insurance. You will design payment applications and mentor other engineers, all while ...

    Hybrid C# .NET Software Engineer for Lab Automation & IoT

    A global engineering company based in the UK is looking for an experienced software developer to join their Synthesis, Digitalization and Automation division. This hands-on role includes designing high-quality software and developing solutions for laboratory automation. Candidates should have over 5 years of exp ...

    Mid Level Full Stack Software Engineer (C#/.NET, React)

    Gearset is the leading DevOps platform for Salesforce - our users can build and manage many aspects of their Salesforce development from within Gearset, from complex CI/CD pipelines to disaster recovery. The Gearset platform is a standalone tool that sits outside of the Salesforce platform, integra ...

    🚀 Boost Your Hiring Chances with Our AI-Powered Tool-Kit

    Stand out from thousands of applicants. Use our proven career tools to optimize your applications and land your dream job faster.

    To-Do Planner

    Organize your job search and personal tasks. All data is confidential.

    Open Planner →

    Wellbeing Center

    Access your confidential wellness report and resources to manage job search stress.

    Check Wellbeing →

    Skill Coach

    Plan your skill development with O*NET support to stay competitive in your field.

    Start Coaching →

    Outfit Helper

    Get AI-powered suggestions on what to wear for your next interview.

    Find Outfit →

    Income Tax Calculator

    Plan your finances with our calculator, updated for 2025 tax regulations.

    Calculate Tax →

    Salary Benchmark

    Get accurate, AI-supported salary trends to know your worth and negotiate better.

    Check Salaries →

    Interview Practice

    Practice for any interview with AI-enabled Q&A sessions. All data is private.

    Start Practicing →

    Interview Predictor

    Use our AI-supported tool to predict potential interview questions based on your resume.

    Predict Questions →

    Interview Practice Timer

    Use our mock interview trainer to perfect your answers under timed conditions.

    Start Timer →

    Behavioral Mastery

    Ace tricky behavioral interviews with our AI-powered practice module.

    Master Answers →

    Question Journal

    Confidentially record interview questions you were asked for future reference.

    Open Journal →

    Interview Ace

    A comprehensive tool to help you master every aspect of your interviews.

    Become an Ace →

    Q&A Logs

    Confidentially track your answers to common questions and refine them over time.

    View Logs →

    Application Planner

    Schedule and organize your job applications in one confidential planner.

    Open Planner →

    Cover Letter Tool

    Create perfect, tailored cover letters for each application with AI support.

    Generate Letter →

    Resume Score

    Get instant feedback on your resume with our NLP-supported analysis tool.

    Check My Score →

    ATS Score

    Check your resume's compatibility with Applicant Tracking Systems (ATS).

    Check ATS Score →

    Application Analyzer

    Use AI to analyze job descriptions and optimize your application materials.

    Analyze Application →

    Career Visualizer

    Confidentially plan and visualize your long-term career path and goals.

    Visualize My Career →

    Offer Genius

    Get intelligent insights and strategies to confidently negotiate job offers.

    Negotiate Offers →

    JobFlow

    Track your entire job search progress from application to offer with this intelligent tool.

    Track My Flow →

    JobSense

    Our intelligent matching engine that provides smart job recommendations.

    Get Smart Matches →

    Networking Toolkit

    Tools to build and manage your professional connections. All data is confidential.

    Build Network →

    Professional CV

    A classic, O*NET supported template for corporate and professional roles.

    Use This Template →

    Executive CV

    A premium, O*NET supported template designed for senior and C-level positions.

    Use This Template →

    Modern CV

    A fresh, stylish, O*NET supported template perfect for tech and modern industries.

    Use This Template →

    Creative CV

    A visually distinct, O*NET supported template for design and artistic roles.

    Use This Template →

    Minimalist CV

    A clean, simple, O*NET supported template that focuses purely on content.

    Use This Template →

    Europass CV

    The standard European Union recommended format for wide compatibility.

    Use This Template →

    Student CV

    An institution-recommended template perfect for internships and first jobs.

    Use This Template →

    Graduate CV

    An institution-recommended template for recent graduates entering the workforce.

    Use This Template →

    Academic CV

    The researcher-recommended format for roles in academia and research.

    Use This Template →

    Developer/IT CV

    A tech-savvy recommended template to highlight your technical skills.

    Use This Template →

    Skilled Worker CV

    A trades-recommended template to showcase hands-on skills and experience.

    Use This Template →

    Monochrome CV

    A sleek, black-and-white, O*NET supported template for a professional look.

    Use This Template →

    Art CV

    An artist-recommended template that allows your creativity to shine.

    Use This Template →

    Harvard CV

    A researcher-recommended template based on the classic Harvard format.

    Use This Template →

    Volunteer Research

    Help us improve our platform by joining our community research program.

    Join Research →

    Review Us

    Share your experience with our tools to help other job seekers.

    Share Experience →

    Register

    Create your free account to save jobs, build your profile, and track applications.

    Create Account →

    Login

    Access your dashboard, manage applications, and continue your job search.

    Access Your Account →

    Profile Builder

    Create a comprehensive professional profile that attracts recruiters and showcases your skills.

    Build Your Profile →

    View Profile

    See your public profile exactly as employers will see it. Make sure it's perfect.

    Preview Profile →

    Bookmarked Jobs

    Keep track of all your saved job opportunities in one organized place.

    View Saved Jobs →

    Your Reviews

    View and manage all the company reviews you've submitted.

    See Your Reviews →

    Following

    Manage the list of companies you follow to stay updated on their new openings.

    Manage Following →

    Find Companies

    Discover and research top employers in your country and industry.

    Discover Employers →

    Standalone CV Builder

    Use our O*NET supported CV builder to create a professional resume from scratch.

    Build Your CV →

    PDF to DOC (Beta)

    Convert your PDF resumes or documents into editable Word (DOC) format.

    Convert PDF →

    DOC to PDF (Beta)

    Create universally compatible PDF documents from your Word (DOC) files.

    Create PDF →

    General FAQ

    Find answers to common questions about our job site and platform.

    Read FAQ →

    Job Seekers FAQ

    Get help and find answers to questions specifically for job seekers.

    Get Help →

    Job Matching

    Learn about the technology and algorithms behind how we match you to jobs.

    Learn How →

    Personalized Matching

    Discover how we use your profile and activity to provide customized job suggestions.

    Learn More →

    Quick Apply

    Understand our fast application process and how to make the most of it.

    Learn More →

    Alert Frequency

    Learn how to manage your job alert settings so you get the updates you want.

    Manage Settings →

    Job Alerts Guide

    A complete guide to understanding how job alerts work and how to use them effectively.

    Read Guide →

    Resume Matching

    Learn how our system matches your resume to job requirements.

    Learn More →

    Ethical Branding

    Read our guide to building a professional and ethical personal brand.

    Read Guide →

    Candidate Visibility

    Learn how to increase your visibility to recruiters on our platform.

    Increase Visibility →

    Verified Badge

    Find out how you can get a verified badge to build trust with employers.

    Get Verified →

    AI ATS Technology

    Learn about the advanced AI and ATS technology that powers our platform.

    Learn More →

    ATS Ranking

    Understand how Applicant Tracking Systems rank you as an applicant.

    Learn More →

    Semantic Matching

    Learn how our AI-powered semantic matching goes beyond keywords.

    Learn More →

    💡 Tools that really enhance your application chances and career growth.

    Go to Your Dashboard →

      Software Engineer C Python Java Defence Tech Jobs in United Kingdom Job Search Guide, Trends and Insights