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
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.

Reset

Create Job Alert

 
   
Reset

DevOps Engineer

Requires SC Clearance or Eligible for SC Clearance The Opportunity Join a high-performing engineering team delivering secure, scalable infrastructure and platforms for mission-critical Defence & Security programmes. This role is ideal for DevOps engineers who thrive in complex environment ...

C++ Software Engineer Hybrid Working Up to £130,000 Base (+Bonus)

C++ Software Engineer - Hybrid Working - Up to £130,000 Base (+Bonus) C++ Software Engineer – Trading Systems Client: Global Hedge Fund Compensation: Up to £130,000 Base + Bonus Location: London (Hybrid) Overview A global h ...

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

C++ Software Engineer - Hybrid working - Up to £350,000 Base (+ Bonus) Senior Quantitative Technology Consultant at Hunter Bond C++ Software Engineer – HFT Client: Elite Algorithmic Market Making Firm (HFT) Compensation: Up to £350,000 Base + Bonus ...

Full Stack Software Engineer

Full Stack Software EngineerCheltenham, full time onsite Ncounter is supporting a highly specialised software consultancy delivering secure, high assurance engineering into some of the UK’s most sensitive environments. This is a role where technical depth really matters, with engineers ...

Embedded Software Engineer

Embedded / Low-Level Software Engineer – Defence & Security Newcastle SC Cleared / Eligible The Opportunity Work at the cutting edge of low-level and embedded systems, developing high-performance, secure software for mission-critical Defence & Security a ...

Embedded Software Engineer

Embedded / Low-Level Software Engineer – Defence & Security Newcastle SC Cleared / Eligible The Opportunity Work at the cutting edge of low-level and embedded systems, developing high-performance, secure software for mission-critical Defence & Security a ...

Software Engineer

Software EngineerMaking sure you fit the guidelines as an applicant for this role is essential, please read the below carefully.Certain Advantage is hiring for a Software Engineer based in the Guildford or Newcastle area.This role is on a contract basis and is hybrid-based.The CompanyWe’re wo ...

Software Engineer

Software EngineerCertain Advantage is hiring for a Software Engineer based in the Guildford or Newcastle area.This role is on a contract basis and is hybrid-based.The CompanyWe’re working with a Manufacturing business that operates in the Aerospace sector. They design, manufacture and deliver ...

Senior Software Engineer in Test

Senior Software Engineer in Test Certain Advantage are recruiting on behalf of our globally renowned brand for a Senior Software Engineer in Test. This is a temporary contract inside IR35 initially until March 2027 working a couple of days onsite per month in Manchester for meet ups. We’re ...

Senior Software Engineer in Test

Senior Software Engineer in Test Certain Advantage are recruiting on behalf of our globally renowned brand for a Senior Software Engineer in Test. This is a temporary contract inside IR35 initially until March 2027 working a couple of days onsite per month in Manchester for meet ups. We’re ...

Senior Software Engineer

Select how often (in days) to receive an alert: Are you ready to be part of the future? At QinetiQ, we’re not just imagining tomorrow we are creating it. From cutting‑edge defence technology to ground‑breaking innovations our mission is to empower and protect lives. Join us as a Senior Software Eng ...

Senior Software Engineer

Select how often (in days) to receive an alert: Are you ready to be part of the future? At QinetiQ, we’re not just imagining tomorrow we are creating it. From cutting‑edge defence technology to ground‑breaking innovations our mission is to empower and protect lives. Join us as a Senior Software Eng ...

Senior Software Engineer Ground Software for Aircraft

A leading aerospace technology company in Uxbridge seeks a Senior Software Engineer to join their team responsible for developing state-of-the-art ground software for commercial aircraft. The ideal candidate will have at least 5 years of software development experience and expertise in Python, C#/.NET, and AWS. ...

Senior Software Engineer Ground Software for Aircraft

A leading aerospace technology company in Uxbridge seeks a Senior Software Engineer to join their team responsible for developing state-of-the-art ground software for commercial aircraft. The ideal candidate will have at least 5 years of software development experience and expertise in Python, C#/.NET, and AWS. ...

Head of Software Engineering

Head of Engineering, Manchester, £100,000 - £115,000 + Share Options Join a fast-growing SaaS business at the forefront of their sector, building innovative products that help global organisations. The company combines domain expertise, data and modern cloud technology, used by enterp ...

Software Engineer III Python and Databricks in Glasgow JPMorgan Chase & Co.

Software Engineer III - Python and Databricks Glasgow, United KingdomPosted 10 months ago Tech Stack Python Databricks Responsibilities Deliver system design, application development, testing, and operational stability. ...

Lead Python Engineer – Cloud Native Systems & Architecture

Velocity Tech is seeking a Lead Software Engineer based in Greater London to design and deliver scalable cloud-native systems. This hands-on leadership role involves shaping architecture, leading engineering efforts, and mentoring a talented team. The ideal candidate will have over 7 years of experience as a Sen ...

Lead Python Engineer – Cloud Native Systems & Architecture

Velocity Tech is seeking a Lead Software Engineer based in Greater London to design and deliver scalable cloud-native systems. This hands-on leadership role involves shaping architecture, leading engineering efforts, and mentoring a talented team. The ideal candidate will have over 7 years of experience as a Sen ...

Graduate Software Developer | Newcastle

Overview We have partnered with a new venture, backed by global leaders in consulting and investment management, who are looking for exceptional Graduate Software Developers to join their team in Newcastle Responsibilities Collaborate closely with business users to solve real- ...

Web Application Engineer AI Trainer in Hartlepool DataAnnotation

Evaluating Code Quality One important aspect of software development is evaluating the code quality produced by AI models. This evaluation involves assessing both the correctness and performance of the code. Technologies The evaluation of code quality can be carried out using various ...

Staff Backend Engineer Distributed Systems & Lakehouse

A leading data and AI company in Greater London is seeking an experienced Software Engineer to join as a founding member of their London site. The role involves tackling complex technical challenges across various domains and contributing to the development of scalable, secure services. Candidates should have ov ...

Embedded Software Engineer

Job DescriptionJoin our team as an Embedded Software Engineer and contribute to the development of complex, safety‑critical embedded software for defence and other highly regulated engineering environments. You will be involved in the design, development, and integr ...

Senior Software Engineer

Senior Software EngineerSalary: Negotiable (Depending on Experience)Location: North London AreaSchedule: 3-days on site and 2-days WFH per weekThe OpportunityWe are supporting a globally recognised engine ...

Senior Software Engineer

Senior Software EngineerSalary: Negotiable (Depending on Experience)Location: North London AreaSchedule: 3-days on site and 2-days WFH per weekThe OpportunityWe are supporting a globally recognised engine ...

Senior Software Engineer

Senior Software EngineerSalary: Negotiable (Depending on Experience)Location: North London AreaSchedule: 3-days on site and 2-days WFH per weekThe OpportunityWe are supporting a globally recognised engine ...

Test Systems Software Engineer

Overview Expleois a trusted partner for end-to-end, integrated engineering, quality services and management consulting for digital transformation. We help businesses harness unrelenting technological change to successfully deliver innovations that will help them gain a competitive advantage and i ...

Test Systems Software Engineer

Expleois is a trusted partner for end-to-end, integrated engineering, quality services and management consulting for digital transformation. We help businesses harness unrelenting technological change to successfully deliver innovations that will help them gain a competitive advantage and improve the every ...

Staff Platform Engineer – Core Cloud Platform

Fanatics is seeking a Staff Platform Engineer to join our Platform Engineering team based in the UK or Ireland. This role is essential for overseeing the platforms that power Fanatics Betting & Gaming’s software ecosystem. Responsibilities include driving technical design, architecting cloud-native platforms on ...

Lead Software Engineer Databricks, PySpark, AWS in London JPMorgan Chase & Co.

Lead Software Engineer - Databricks, PySpark, AWS London, United Kingdom Posted about 2 months ago This is a job posted by our partner Jooble Qualifications Strong experience with Redshift Proficiency in SQL based database systems, both SQL & NoSQL, as w ...

DV Cleared Data Science Engineer | Cloud Data Platforms

A prominent recruitment agency is searching for a Data Science Engineer to support a public sector programme in the UK. This role involves designing robust data processing systems for analytics and machine learning. Candidates should have a strong software engineering background in languages like Java, Python, o ...

Software Engineer Framework Ingestion & Tooling

A global data and AI platform seeks a Software Engineer in Edinburgh to develop frameworks for ingesting complex financial data. The role involves designing solutions, writing high-quality code, and collaborating with a diverse team. Ideal candidates have a degree in Computer Science and experience in Java, Pyth ...

Software Engineer in Gloucester Hamiltonian Dynamics

We Are Hiring We are looking for an experienced Software Engineer with team lead experience to join our expanding technology team. This is an exciting opportunity for growth and development, offering a competitive salary for the right candidate. Job Requirements Ideal candidates ...

Lead Software Engineer Databricks, PySpark, AWS in London JPMorgan Chase & Co.

Lead Software Engineer - Databricks, PySpark, AWS London, United Kingdom Posted about 2 months ago This is a job posted by our partner Jooble Qualifications Strong experience with Redshift Proficiency in SQL based database systems, both SQL & NoSQL, as w ...

Quantitative Developer

Where pure quant thinking meets production reality. Our client is hiring a Senior Quant Developer to own the full arc — from pricing model to live system — at one of the most sophisticated OTC desks in digital asset markets. London · Hybrid (3–4 days in office) · Senior level · Up t ...

Quantitative Developer

Where pure quant thinking meets production reality. Our client is hiring a Senior Quant Developer to own the full arc — from pricing model to live system — at one of the most sophisticated OTC desks in digital asset markets. London · Hybrid (3–4 days in office) · Senior level · Up t ...

Junior Software Engineer (C++ or Rust) High Performance Trading Systems

Overview Junior Software Engineer (C++ or Rust) - High Performance Trading Systems A leading crypto market maker in London is seeking a Junior Software Engineer to join their elite engineering team. The firm specializes in market making, high-frequency trading, and Web3 investments, and ope ...

C++ Sr Lead Software Engineer Cash Equities Liquidity Vice President

Job Description We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorgan Chase within Electronic Trading Technology, you are an integral part of an agile team that works to enhance, build, and d ...

Senior Software Engineer (C# / .NET) Global Bank £90 100k + bonus

We’re working with a leading global bank to hire a Senior Software Engineer to join a high-performing technology team supporting mission-critical systems. This is a hands-on role for an experienced engineer who enjoys working close to the business, shaping technical design, and delivering robust, scala ...

Senior Software Engineer (C# / .NET) Global Bank £90 100k + bonus

We’re working with a leading global bank to hire a Senior Software Engineer to join a high-performing technology team supporting mission-critical systems. This is a hands-on role for an experienced engineer who enjoys working close to the business, shaping technical design, and delivering robust, scala ...

Senior Software Engineer (C# / .NET) Global Bank £90 100k + bonus

We’re working with a leading global bank to hire a Senior Software Engineer to join a high-performing technology team supporting mission-critical systems. This is a hands-on role for an experienced engineer who enjoys working close to the business, shaping technical design, and delivering robust, scala ...

Senior Software Engineer (C# / .NET) Global Bank £90 100k + bonus

We’re working with a leading global bank to hire a Senior Software Engineer to join a high-performing technology team supporting mission-critical systems. This is a hands-on role for an experienced engineer who enjoys working close to the business, shaping technical design, and delivering robust, scala ...

C++ Software Engineer II ArcGIS Maps SDKs for Native Apps

Overview Bring your passion for C++ to help us develop a cross-platform mapping SDK that runs on desktop and mobile devices using the latest compilers and C++ standards. At Esri, we love making a difference and leading the way in developing innovative technology. This is a great opportunity to des ...

Senior C++ Software Engineer — Real Time Sensor Data (UK Onsite)

A technology company in Crowmarsh Gifford is seeking a Senior Software Engineer (C++) to design and build software platforms for data collection and insights. The successful candidate will have at least 6 years of experience and solid skills in C++ and Linux. The position requires some onsite work in Wallingford ...

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

C++ Software Engineer – High Frequency Trading Client: Scientific Quant Fund Location: London (Hybrid) Compensation: Up to £350,000 Base + Bonus Overview An elite scientific quant fund is seeking a high-performance C++ Software Engineer to j ...

C++ Sr Lead Software Engineer Cash Equities Liquidity Vice President

Job Description We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorgan Chase within Electronic Trading Technology, you are an integral part of an agile team that works to enhance, buil ...

C#/.NET Software Engineer — Grow with a Leading UK Firm

An exciting opportunity awaits a talented C#/.NET Software Engineer at a renowned global market leader. This role offers the chance to enhance your programming skills in a dynamic environment that challenges you to produce high-quality code. You will work with the .NET framework, including ASP.NET and SQL Server ...

C#/.NET Software Engineer — Grow with a Leading UK Firm

An exciting opportunity awaits a talented C#/.NET Software Engineer at a renowned global market leader. This role offers the chance to enhance your programming skills in a dynamic environment that challenges you to produce high-quality code. You will work with the .NET framework, including ASP.NET and SQL Server ...

Junior Software Engineer (C++ or Rust) High Performance Trading Systems

Overview Junior Software Engineer (C++ or Rust) - High Performance Trading Systems A leading crypto market maker in London is seeking a Junior Software Engineer to join their elite engineering team. The firm specializes in market making, high-frequency trading, and Web3 investments, and ope ...

Snr. Software Engineer (C#/.Net) (Remote in the United Kingdom)

About KnowBe4KnowBe4, the provider of the world's largest security awareness training and simulated phishing platform, is used by tens of thousands of organizations around the globe. KnowBe4 enables organizations to manage the ongoing problem of social engineering by helping them train employees ...

C++ Software Engineer II ArcGIS Maps SDKs for Native Apps

Overview Bring your passion for C++ to help us develop a cross-platform mapping SDK that runs on desktop and mobile devices using the latest compilers and C++ standards. At Esri, we love making a difference and leading the way in developing innovative technology. This is a great opportuni ...

🚀 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

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