Senior software developer jobs in MiddlesbroughCreate job alerts

Want to join a modern, ambitious tech-driven business where you can own your projects, influence future architecture, and work with a cutting-edge tech stack? If you're passionate about building high-quality software and want real career progression, this role is for you! This is a hybrid working model where the expectation is to come in 2-3 times per week to the Stockton office. Why join? • This is your chance to join a local innovative technology company undergoing exciting modernisation and cloud transformation., • You’ll work on impactful products used by thousands of customers and contribute directly to new features, system improvements, and platform migration initiatives., • You'll benefit from a talented supportive team that values innovation and autonomy who you can in turn learn from and leverage your own skills., • They're a flexible employer so whether it's perhaps the school run, a regular exercise class or other commitments - they'll work together with you to make it work., • Work closely with senior engineering leadership and experienced developers who will mentor and support your growth., • Receive coaching, guidance and regular reviews to develop your skills as a mid-level engineer., • Build high-quality, scalable applications using modern frameworks and development tools., • Translate user stories into functional features while collaborating with Product and QA teams., • Maintain, optimise and debug existing platforms; contribute to code reviews and CI/CD deployments., • Support modernisation efforts, including cloud-first architecture, and promote best practices and clean code principles. Technical Requirements - To be a good fit for this role you should have a few years commercial experience in .... • C#, .NET, • SQL server, • Experience with RESTful APIs, SOAP APIs, GraphQL and other types of APIs., • Good design/architectural patterns, • Understanding of Unit Testing, • Created cloud based solutions, • CI/CD processes Working benefits • Salary up to £47,000, • Annual pay reviews / increases, • 27 days Holidays plus Bank Holidays, • Discounts on some utility bills, • Flexible working hours, • Health plan, • Free parking, • Above industry standard sick pay cover Interview process / Application process • You must be eligible to work in the UK, sponsorship is not offered.

We’re hiring a Senior Software Developer with experience in IBM Business Automation to support the delivery of process-driven applications within a large, complex organisation in the healthcare sector.

UX‑first, often highly complex software. You’ll join a smart, collaborative team that pushes each other to articulate and defend every architectural decision in pursuit of best‑in‑class software. Whether you’re refining our Azure architecture as CTO or shipping revenue‑critical features

We’re looking for a Senior Software Developer with experience in IBM Operational Decision Manager to build and maintain rule-based decision services within a complex enterprise environment. Collaborating with developers and architects across the wider platform.

They are looking for a Senior Full Stack Engineer to play a key role in delivering the first iteration of a strategic cloud platform that will expand under a 'fail fast' innovation model.

Senior Software Developer (Voice / SIP Platforms)£55,000 £65,000 DOE | Hybrid Working (1x day a month office)Are you a seasoned developer with a passion for building robust, real-time communications platforms? Looking for a role w

Senior Software Developer BathAre you an experienced Software Developer passionate about collaborative development and fostering growth in others? A dynamic company in Bath is looking for a Senior Software Developer to join their innovative team.

As a Senior Software Developer you will be architecting creative and innovative complex solutions. Key attributes for success include the ability to self-manage, prioritize effectively, communicate clearly, and deliver high quality software. Create technical documentation, including architectural de

Full stack developer with Front- or Back- end specialization (Mid level, based in SA) – Join to apply for the Full stack developer with Front- or Back- end specialization (Mid level, based in SA) role at Dealstack. Following strong commercial traction from leading industry players, we are looking

TherapyNotes is seeking a Senior Software Developer to join our growing team. Experience in event-based software design and event-driven architecture. We're a dynamic team of pros who love to innovate and push the envelope, keeping our software cutting-edge.

Senior Software Developer (Python). Olive Jar Digital is seeking a Senior Software Developer to help build, refine, and enhance high‑fidelity AI prototypes and supporting services across several Discovery and Alpha initiatives. With a huge growth plan over the next two years, we are expanding our

Vacancy for Senior Software Developer at The National Archives. Vacancy for Senior Software Developer at The National Archives. We are looking for a Senior Software Developer with extensive experience working within the Django web and rest frameworks and ideally with Wagtail CMS development experien

Senior Full-Stack Software Developer, UK. We’re looking for a Senior Full-Stack Software Developer to build high-impact features powering high-volume systems in the live-event space. Seasoned full-stack developer with 5+ years of experience.

Digital, Information & Technology (DIT) Senior Software Developer - MoD - SEO (IT) — United Kingdom.

Headquartered in San Francisco, our investors include.Develop and maintain complex, production-grade.Design modular, testable codebases using modern.Collaborate asynchronously with AI research teams to improve model training and evaluation.Work independently to meet deadlines and enhance.Experience

Senior Software Engineer (Python/Java, AWS). From a technical standpoint, the team is looking for experienced software engineers with strong skills in either Python or Java alongside AWS, with the ability to work across a modern cloud environment.

We support thousands of associations, clubs, and communities globally with software that simplifies recurring billing, member engagement, and day-to-day operations. Proactively identify technical debt, architectural improvements, and tooling enhancements that improve developer velocity and product q

Share knowledge and mentor junior developers where needed.

As part of the Technical Team, you will work directly with the full lifecycle of production‑grade software—from early prototypes to stable, shipping features. You will contribute both to new product development and to the ongoing evolution of our existing software. Senior Director, Technical Pro

This role offers an exciting opportunity to lead projects, mentor junior developers, and work on high-impact, secure banking solutions. This role is ideal for developers with strong technical expertise who are looking to grow into leadership or team management responsibilities. Opportunity to mentor

Senior Software Developer Remote with ad-hoc travel to Manchester | Experience within UK central government required. Proven experience as a Senior Software Developer in complex environments. Share knowledge and mentor junior developers where needed.

Are you a creative problem-solver who thrives in a fast-paced, experimental environment? Do you relish the challenge of building prototype software quickly, testing ideas, and learning from failure as much as success? Mustard Systems is seeking a Senior Software Developer to join our talented Horse

As a Senior Java Software Engineer, you will:. ITRS Group is looking for Senior Java Engineer in London. Begin playing a role in the Analytics developers community, answering questions and sharing advice.

Tangible is a fast-growing, tech-driven platform providing liquidity solutions to LPs and GPs in the private-markets secondaries space.By combining deep sector expertise with modern infrastructure, we unlock liquidity across private equity, private credit, and real assets, transforming the industry

Join to apply for the Senior Software Developer role at DFSAfrica. Respond to and implement fixes for software maintenance support tickets.

ZILO™ is the UK-based FinTech specialising in global asset and wealth management software,designed to scale and transform businesses of all types using our own developed AI Technology. We are looking for a talented Software Engineer (Go) to join our dynamic team. Collaborating with cross-functiona

A leading software development company is seeking an experienced Software and Applications Developer and Analyst to design, develop, and maintain software applications. The ideal candidate will have a Bachelor's degree in a related field and a minimum of 15 years' experience in software development,

We are a small but rapidly growing team of mathematicians, data scientists and software engineers constantly striving to refine our world class statistical models while also researching and deploying new ones. Our work bridges three domains, each challenging in its own right - iGaming, quantitative

We are seeking a Senior Developer with experience in developing scalable PHP based applications.

Work with the Software Development Manager and Infrastructure Manager to determine the most appropriate infrastructure solutions to support the software. You will be the technical lead for software development and delivery. Be part of the development team responsible for writing high quality softwar

Up to £300k Total Compensation 1st Year Comp.Low-level systems, performance tuning, and modern C++.An elite tech-driven firm is looking for a top-tier C++ Engineer to join their team! Known for breaking records in the tech space, they’re made up of exceptional technologists who are passionate abo

As a Senior Software Developer, you’ll be an integral part of our agile development team, contributing to the delivery of secure, scalable, and innovative software solutions. You’ll work closely with product, QA, and support teams to continuously improve our software delivery process and help sh

Code Quality: Participate in code reviews, testing, and debugging to ensure software quality and performance.

Our recruitment firm represents a client currently seeking an accomplished Senior Software Developer to join their dynamic team. This role is an excellent opportunity to utilise your extensive skills to produce scalable software solutions, contributing across the entire software development life cyc

An exciting new permanent opportunity has become available for a Senior Developer, to join a juggernaut organisation in the recruitment industry. They're looking for numerous Senior Developers to lead technical initiatives in a dynamic, AI-driven environment. To apply for the Senior Developer positi

TrueNorth are working with a successful tech consultancy who work heavily in the public sector - we're looking for a Senior Java Software Engineers for some immediate contract roles.

Established in 1987, QBS Software provides a platform for software companies and channel resellers to increase efficiency and achieve growth. As a Senior Business Central Developer, you will play a vital role in developing & implementing the Business Central ERP platform for the global QBS business

Comfortable operating at senior / VP level in a delivery-focused team. Collaborate with other senior engineers to drive platform quality and stability. A global financial services organisation is growing a senior Java engineering team to support a strategic, business-critical technology platform.

A leading software solutions firm in the United Kingdom is seeking a Senior Software Developer to join its agile development team. This role focuses on leveraging AI to enhance secure and scalable software solutions.

A tech company specializing in software solutions in the UK is seeking a Senior Business Central Developer.

Senior Software Developer with a Backend Focus. To professionalise our product development and continue our growth path, we are currently looking for a senior backend developer. Senior backend skills with at least 5 years of experience with Java, and a good understanding of Python (FastAPI, Flask…

As a Senior Software Developer, you will act as an architect building Python applications, high-quality tools, services, and web front-end UIs that enable award-winning VFX and feature animation work. Solid grasp of systems architecture and software engineering fundamentals. You enjoy building, pack

Senior C# Developer – Analytics Development Team (London). We’re looking for a highly skilled C# engineer with deep software engineering expertise and a strong understanding of financial markets. Collaborate with the Software Development Manager to shape the development roadmap and define strate

As a Senior Lead Software Engineer at JPMorgan Chase within the Corporate Technology Market Risk team, you will lead the rapid expansion of a strategic visualization and reporting platform. Executes creative software solutions, design, development, and technical troubleshooting with ability to think

We are looking for a Senior Backend Developer (Java) to take a leading role in building the technical foundations that enable AI agents to operate across Tradedoubler. Experience running and operating software in Linux environments.

As Senior Web Developer, be part of our FlexONE team and own critical product surfaces across our web and mobile applications. We are looking for an amazing developer to join our team building FlexTrade's OEMS platform, FlexONE, which is our state-of-the-art, fully integrated Order Management System

Senior Full-Stack Software Developer, UK. We’re looking for a Senior Full-Stack Software Developer to build high-impact features powering high-volume systems in the live-event space. Seasoned full-stack developer with 5+ years of experience.

The Software Development function creates and maintains applications, frameworks and other software components to deliver to business requirements. Developers conceive, specify, design, engineer, document, test, and deliver bug fixes as needed to provide high quality software solutions. Senior C# De