Freelance Software Engineer jobs in Berkshire

You will own the implementation of end-to-end ingestion and validation flows, spanning frontend state management, backend APIs, and data models.

You will work directly with the founders to convert non-deterministic inputs into deterministic system behaviour and ship code that is reliable in production.

You will design, implement, and test robust flight software on RTOS or Embedded Linux platforms, taking systems from simulation through launch and on-orbit operations within a fast-paced, mission-driven environment. Key Responsibilities

You will apply your expertise in software engineering and aviation systems to guide the development of high-integrity aircraft control solutions, ensuring safety, reliability, and compliance with industry standards. Additionally, you will mentor and support your team, fostering a culture of technical excellence and continuous improvement.

Job Description Modeling Engineer – DSP / Software – Semiconductors – Berkshire – Hybrid – Generous salary. A Modeling Engineer with good knowledge of control theory and digital algorithms together with proficiency in C++, Matlab or Python/NumPy programming languages will join a thriving Semiconductor Company, contributing to their system-level modelling of serial communication links. With a...

Cyber Software Vulnerability Engineer If you are interested in applying for this job, please make sure you meet the following requirements as listed below. Package - £45,000 - £65,000 (depending in experience level) Benefits - DV Bonus plus excellent benefits Clearance - Clearable to eDV level, SC clearance required to start. Location - Hampshire, Surrey or London - hybrid working Join a...

DV Cleared Senior Software Engineer Do you have the skills to fill this role Read the complete details below, and make your application today. Aldermaston - Onsite 12-month contract | Outside IR35 Are you a DV cleared Software Engineer who can take full ownership of software delivery on site? Do you enjoy building Siemens PLC solutions from scratch in secure, regulated environments?...

Modeling Engineer DSP / Software Semiconductors Berkshire Hybrid Generous salary. Read all the information about this opportunity carefully, then use the application button below to send your CV and application. A Modeling Engineer with good knowledge of control theory and digital algorithms together with proficiency in C++, Matlab or Python/NumPy programming languages will join a thriving...

Embedded Software EngineerHybrid with visits to the office near Reading£££Very Competitive + Bonus + Great BenefitsWere looking for an Embedded Software Engineer who is interested in developing a next generation sensor for the marine industry. xujxxms This would appeal to Engineers who want variety and enjoy working closely with the bare metal electronics components.Knowledge, Skills and...

Software Engineering Manager - AI Start-Up - up to £140k (base) plus Equity Every so often, a technology emerges that doesn’t just improve an industry—it completely reimagines it. Few&Far have partnered with a visionary, privately-funded company at the heart of this transformation. With significant private investment, a talented global team, and a suite of proprietary AI models, they are...

Key Responsibilities - Design, implement, and maintain software for nuclear systems, ensuring compliance with safety and regulatory standards. - Develop software for reactor control, monitoring systems, data acquisition, simulation, and predictive analytics. - Collaborate with multidisciplinary teams including nuclear engineers, electrical engineers, and safety specialists. - Apply best...

We’re seeking a highly skilled Senior Software Engineer with expertise in C#, .NET and Azure. In this role, you’ll design, develop, and deliver high-quality software solutions within agile teams, working across the full development lifecycle. You’ll collaborate closely with engineers, architects, DevOps, and product owners to build robust, scalable, and cloud-ready applications that meet business...

You will design and build APIs that enable products, partners and AI services to work together, including: Building RESTful APIs using C# .

You will likely bring: Strong experience building backend services in C# .

Java Developer Join a high-impact Core Technology team at a leading hedge fund. About the Company This firm is a major player in the space, a multi-strategy hedge fund with a strong focus on systematic and quantitative trading. Founded by industry veterans, it combines deep financial expertise with advanced software engineering to manage institutional capital globally. What You’ll Do -...

Senior Embedded Software Engineer Salary: Up to £100,000 Location: London - 3 days a week We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for a...

You will work on data integrations, platform execution, and the systems that power AI-driven analytics. What You Will Be Doing - Building core data integrations with common SaaS platforms - Designing data pipelines that ingest provider APIs into our analytics datastore - Improving the agent platform and executor with better error handling, observability, and speed

Role: C++ Software Engineer - Up to £190k + Bonus Salary: Up to £190k + Bonus Location: London (Hybrid) Skills: Language agnostic, just need to be a keen technologist (Ideally experienced in C++/ low level languages) This firm is an elite company with high tech standards who have previously set tech world records. They are made up of some exceptionally talented individuals who above all are...

Job Role: Lead Software Engineer, React Native Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our innovative application using React Native. Working with a modern JavaScript stack, your primary focus will be on coding, testing, and enhancing the functionality of...

Senior Software Engineer – AI Startup – Up to 120k 🚀🧠 💰 Salary: £70,000 - £140,000 + meaningful equity 🏙️ Location: London, flexible working arrangements, ideally 2/3 days in office 💻 Tech Stack: Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite engineering team within the AI space. The platform is being used across the...

Playrix — одна из самых успешных компаний по разработке мобильных игр в мире. По доходам среди всех мобильных приложений мы входим в топ-3 в мире, а в Европе мы первые. Наши игры установили 2,3 миллиарда раз (треть населения Земли), каждый день в них играет более 30 миллионов людей по всему миру! У нас большие планы на развитие и рост наших проектов, именно поэтому мы ищем сильнейших экспертов в...

Job Description Rewarding opportunity for a hands-on Semiconductor industry Director of Software Engineering with the technical expertise to deliver complex, production grade systems. Hybrid working available. You’ll be a key part of cutting-edge technology development which is revolutionizing wired connectivity by enabling the building of scalable, energy efficient AI systems Worldwide. The...