senior python engineer jobs in Southampton

Job Description We’re expanding our engineering team and hiring a Senior Python Software Engineer to help own and develop an established trading-related application. The system runs in production, processes high-frequency real-time data, and needs careful performance engineering and disciplined testing to keep latency and reliability where they should be. You’ll take meaningful ownership...

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.

Senior Data Engineer (SQL Python Snowflake) London / WFH to £120k Do you have data expertise combined with technical leadership skills? You could be progressing your career in a hands on leadership role at a tech driven, global Asset Manager with multiple billions of dollars under management. As a Senior Data Engineer you will design, build and maintain reliable data pipelines and integrations...

Job Description Due to progression, this role exists to replace a senior engineer within a well-established software company operating in the highly regulated energy sector. Senior Python Software Engineer Circa £56,000 + up to 15% bonus | Hybrid (2 days per month onsite, Southampton) The software you'll work on is business critical. It must be reliable, auditable, and able to stand up to...

Due to progression, this role exists to replace a senior engineer within a well-established software company operating in the highly regulated energy sector.Senior Python Software Engineer Circa £56,000 + up to 15% bonus | Hybrid (2 days per month onsite, Southampton)The software you'll work on is business critical. It must be reliable, auditable, and able to stand up to regulatory scrutiny....

You will be joining a fast growing technology company building a production grade platform that enables advanced AI driven products.

You will have real ownership, influence over technical decisions and the space to build things the right way.

You will be trusted to take responsibility across the stack, including

About TriloDocs TriloDocs is a growing company at the intersection of technology and life sciences. We help pharma and healthcare organizations transform scientific data into clear, structured documents. Our team is passionate about creating intuitive, reliable tools that make a real difference. The Role We're looking for a Mid-Level to Senior Python Developer with a strong STEM background —...

At Critical Software we truly believe that our people are what makes us what we are. At the heart of everything we do are our diverse and talented individuals, pushing the boundaries of what´s possible. Working at Critical is more than just a career choice, is more than a business: we're a community with a strong sense of purpose, values, and togetherness. Our engineering excellence ensures that...

Job Description Software Development Engineer III Expedia Group brands power global travel for everyone, everywhere. We design cutting-edge tech to make travel smoother and more memorable, and we create groundbreaking solutions for our partners. Our diverse, vibrant, and welcoming community is essential in driving our success. Why Join Us? To shape the future of travel, people must come...

Senior Data Engineer | Remote (UK or Europe) A leading prop trading firm is hiring a Senior Data Engineer to take ownership of their trading and market data infrastructure. Operating globally with connectivity to dozens of exchanges, the firm executes millions of trades daily with data playing a mission-critical role in every aspect of the business. This is a high-impact, high-autonomy role in...

Senior Mechanical Marine Engineer Southampton £50,000 - £65,000 + Hybrid Working + Career Progression + Bonus + Private Medical + 15% Pension + 26 Days Holiday + Stability + Life insurance + Private Medical + Holidays Secure your next career move as a Senior Mechanical Marine Engineer with a leading marine engineering consultancy working on high-value superyacht and complex vessel projects....

Senior Backend Engineer | Fully Remote UK | £70,000-£75,000 | Python | Django | AWS Location: Fully Remote - Candidates MUST be UK based Salary: £70,000-£75,000 + benefits Tech Stack: - Backend: Python (Django) - Frontend: React - Cloud Systems: AWS, Docker Are you a Senior Backend Engineer who enjoys taking ownership of real production systems and shaping how a platform evolves as it...

You will collaborate with multidisciplinary teams to bring innovative electromechanical products to life and support existing ranges with upgrades and new feature

You will be able to demonstrate extensive experience in control systems, safety-critical systems (EN61508/SIL2 or equivalent), and programming in P

You will work closely with frontend engineers, product managers, and the CTO to design and evolve a highly scalable, asynchronous, cloud-native platform. This is a hands-on senior engineering role with real technical ownership, influence over architecture, and scope to mentor others.

You will design, develop, and maintain our platform’s backend infrastructure, focusing on multi-tenant architectures, security, and efficient LLM integration. This role requires a strong understanding of Python web frameworks, cloud services (particularly AWS), and modern AI approaches including working with agentic architecture.

Senior / Staff AI Engineer (Python, ML Systems) - FULLY REMOTE High-growth AI | We're working with a well-funded, fast-scaling AI company building a highly ambitious product at enterprise scale. They're now looking to add Senior and Staff-level AI Engineers to help shape the next phase of their ML platform and establish strong technical leadership within the team. This is a product engineering...

Our client, a leader in the defence and security sector, is currently seeking a Senior Software Engineer with advanced security clearance to join their cutting-edge team. This permanent role offers an exciting opportunity to work on innovative solutions that redefine defence technology. Key Responsibilities: - Design, implement and test solutions to complex customer problems across the...

You will be responsible for the entirety of the back end features of the products.

You will be in charge of building scalable backend services and awesome messaging queues.

You will be responsible for developing a Python-based back end platform that's handling 100,000+s of interactions daily.

We are looking for an experienced Senior Machine Learning Engineer to lead the design and production integration of ML into an established live trading system and drive its next phase of development. Building on our early ML research and prototypes, you will design, build, deploy, and operate production ML components that integrate directly with a real-time execution engine – improving...

You will work on business-critical applications that process and analyse operational data in a regulated environment. Key responsibilities include: - Developing and maintaining Python services

You should be comfortable working independently, communicating clearly, and taking responsibility for the systems you work on.