797 Senior Filemaker Developer jobs in the United Kingdom

• Responsible for the software development lifecycle of bespoke tooling.
• Leverage your experience and skills to assist teams in establishing the best architecture for products and services.
• Provide technical expertise on software development across teams in the .
• Developing CLI and web applications using modern interpreted and compiled programming languages, debugging & troubleshooting, IDE & OS Basics, test driven development, clean code & refactoring, version control, CI / CD, alerting & monitoring, Functional & Non-Functional Testing.
• High performance application design and development in C++, Python and related languages.
• Conduct security research and develop solutions for 5G networks, including creating and testing prototypes in both fronthaul and backhaul environments.
• Work with the latest high-end telecommunications hardware and performance machines.
• Contribute to advancing security in cutting-edge telecommunications technologies and developing robust solutions for high-performance systems.
• Working with latest and high-performance technologies.

• Engagement with open-source communities and processes.
• Solid scripting ability e.g. with Python.
• Basic Linux / Unix environment experience.
• Broad understanding of 5g wireless networks.
• Experience using e.g. C/C++ for software development.
• Experience with Git or other version control.
• Basic understanding of and competence in using virtualized environments.
• Understanding of containerisation & networking basics willingness to learn more if needed.
• Ability and enthusiasm to learn new programming languages as needed, with a strong interest in continuous development.

Astute's Nuclear team is partnering with a leading provider of industrial automation, test and measurement solutions to recruit a Software Developer for their team in Swansea.

The Software Developer role comes with a salary up to 35,000 , up to 12.5% pension contributions, private medical insurance and healthcare plus other benefits.

If you're an experienced Software Developer and are looking to work for an organisation that continually strives to win more business and invests in the growth of its employees/company, then submit your CV to apply today

Responsibilities and duties

Reporting to the Development Manager, you'll be involved in the full software development lifecycle, contributing to the design, build, and support of specialist safety and control software solutions.

Professional qualifications

We are looking for someone with strong technical skills and proven experience in:

• C# .NET Core / .NET Framework
• JS
• TypeScript / JavaScript (Vanilla)
• LINQ
• TSQL
• AJAX / REST / WebAPI
• HTML5 / CSS3 / LESS
• SQL Server Management Studio
• Visual Studio
• Experience with mobile development (Dart/Flutter) would be a bonus.

Personal Skills

The Facilities Manager role would suit someone who is:

• Confident working across both frontend and backend technologies
• Skilled in full lifecycle software development and product design
• Highly motivated, adaptable, and able to meet deadlines independently or within a team
• A collaborative team player who values respect, integrity, and cooperation
• A clear and professional communicator, able to share knowledge effectively
• A proactive self-starter who balances drive and results with attention to quality

Salary and benefits of the Software Developer role

• Salary upto 35,000
• 37-hour working week (Mon-Fri), flexible hours between 7:30am and 6:30pm, core hours 10:30am-3:30pm
• Generous pension contributions up to 12.5%
• Private medical insurance and healthcare scheme
• 25 days holiday +

Software Developer

Location : H Tempest Head Office, Cornwall, TR26 3HU
Salary : Circa £40,000 per annum + Great Benefits!
Contract Type : Full-time, Permanent

We’re hiring!

Tempest Photography (the UK’s leading school photography company) are looking for a passionate Software Developer to join our team and help us build and improve the platforms our customers and colleagues rely on every day!

Our software team plays a key role in modernising legacy systems, building scalable platforms, and delivering tools that make a real difference to customers and colleagues.

We’re looking for a capable and motivated Mid-Level Developer to help us improve and expand our systems – someone who can take ownership of features, contribute to architectural decisions, and mentor junior developers when needed.

As our Software Developer you will be specifically responsible for:

• Designing, developing and maintaining software applications using C# and .NET (Core or Framework).
li>Leading development of features and components across our internal tools, e-commerce platforms, and customer-facing services.
• Contributing to system architecture, design discussions, and technical planning.
• Writing clean, well-documented, and testable code that meets business requirements.
• Identifying technical debt and help improve code quality through refactoring and best practices.
• Troubleshooting issues across the stack and provide production support where needed.
• Supporting legacy PHP applications where necessary and contribute to modernisation/migration efforts.
• Mentoring junior developers and provide code reviews with constructive feedback.

In order to be successful in this role you must have:

• Solid experience with C# and the .NET ecosystem (Core or Framework).
• Experience working with SQL databases and writing performant queries.
• Strong understanding of software design principles, version control (Git), and debugging tools.
• Experience building and consuming RESTful APIs.
• Comfortable working in Agile or Scrum teams.
• Good problem-solving skills and ability to work independently on scoped features.
• Ability to clearly communicate technical ideas and collaborate across disciplines.

It would be great if you had:

• Front-end development experience (JavaScript, HTML, CSS, or a modern JS frameworks).
• Experience working with or maintaining legacy PHP codebases.
• Familiarity with CI/CD pipelines and DevOps practices.
• A good understanding of Microsoft Azure and GCP.
• Awareness of secure coding practices and data protection principles.

If you feel you have the necessary skills and experience to be successful in this role click on “APPLY ” today! We’d love to see links to any personal projects, GitHub, or portfolio work too!

No agencies please.  

Software Engineer (C#/SQL/API)

Location: Stoke on Trent (Hybrid 2 days)
Type: Full-time, Permanent
Salary: £40,000 to £50,000 + Bonus (15-30%)

Join a forward-thinking, enterprise-scale organisation as a Backend Developer , contributing to the core architecture that powers essential business operations. Based in Stoke-on-Trent , this hybrid role (2 days onsite) offers the balance of flexibility and collaboration in a supportive, technology-led environment.

We're looking for developers with experience in C#, Java, Golang, or Erlang , who are passionate about building robust, scalable backend systems. You’ll be working on a mix of modernisation and new development, helping to shape high-performance platforms that support large-scale users and critical services.

This is more than just maintenance. it's an opportunity to influence technical decisions, improve system design, and deliver meaningful impact across the business. You’ll join a collaborative team where your voice is heard, and your skills are valued

If you're looking to deepen your back end expertise within a stable yet innovative organisation, we’d love to hear from you.

Software Developer – Windows, C#, SQL GCP | Hybrid – West Midlands

Innovative Tech | Career Progression | Modernisation Projects

Are you a skilled C# developer looking to be part of something bigger—where your work has real impact and your voice drives innovation?

This is your chance to join a global, tech-forward organisation that’s transforming its legacy systems into a modern, service-oriented architecture. You’ll play a key role in that transformation, with the opportunity to grow your skills, contribute fresh ideas, and make a mark on next-gen platforms.

• Real Ownership – Get stuck into meaningful projects where your technical input truly matters.

• Upskilling Opportunities – As the team modernises the stack, you'll have the chance to learn and work with Go , .NET Core , microservices, and cloud-first architectures.

• Tech-Led Culture – Join a collaborative team that lives and breathes quality software development, driven by best practices and a passion for building resilient, high-performing systems.

• Core : C# / .NET Framework transitioning to .NET Core

• UI : WPF (Windows Presentation Foundation)

• Database : MS SQL Server, T-SQL

• Environment : Windows-based desktop applications

• Coming Soon : Microservices, Go, Cloud technologies

• Strong experience with C# and .NET

• Proficiency with WPF for building responsive, modern UI applications

• Solid understanding of Windows environments and Office integrations

• Confident with MS SQL Server and T-SQL

• Excellent communicator who thrives in a team setting

• Bonus: Experience working on high-availability , multi-user , n-tier distributed systems

Based in the West Midlands , with flexible hybrid working that balances collaboration and personal productivity.

If you're ready to join a business where software is central—not an afterthought—and where your voice will be heard, we’d love to hear from you. Reach out for a confidential chat.

• Develop and maintain .NET applications for edge devices and cloud environments.
• Create dashboard components and CMS functionality in React.
• Optimise SQL performance and manage large datasets effectively.
• Manage and maintain cloud infrastructure in Microsoft Azure.
• Troubleshoot and debug code across multiple codebases and languages (C# and Typescript).
• Support operations and maintenance teams by building alerts, tools, and resolving technical issues.

• 6+ years' experience in software engineering with large-scale .NET codebases.
• Proficient in C#, React (Typescript, HTML, CSS), SQL, and Azure cloud environments.
• Strong understanding of software engineering practices and Agile methodologies.
• Experience in automated testing, debugging, and code review processes.
• Familiarity with protocols and technologies such as OCPP, OCPI, Modbus, and CANBus.
• Excellent communication and collaboration skills, with the ability to work in a fast-moving environment.