Senior Java Software Engineer - Desktop ApplicationsSemantics 21 • Stafford, England, United Kingdom
Senior Java Software Engineer - Desktop Applications
Semantics 21
- Stafford, England, United Kingdom
- Stafford, England, United Kingdom
About
The Role This is a hands-on software engineering role focused on long-term desktop application development - not web development. You will work across both existing and new applications, contributing to software used daily in real operational environments where reliability, usability, and performance genuinely matter. This role is ideal for someone who enjoys building real software products, solving practical engineering problems, and contributing ideas within a smaller technical team where your voice and technical direction genuinely matter. We are looking for a Senior Java Software Engineer, or a strong Java developer ready to step into senior-level responsibility, to help develop and improve large-scale desktop applications used operationally by organisations internationally. You will be involved in: Desktop application development using Java and Swing, with some JavaFX where appropriate Improving and maintaining large commercial codebases Performance optimisation and troubleshooting Designing intuitive desktop user interfaces Database integration using technologies such as MySQL and SQLite File processing, reporting, and data handling Contributing ideas, innovation, and long-term technical improvements across the wider platform Helping guide development standards, architecture decisions, and future technical direction Supporting, mentoring, and where appropriate supervising other developers as the team grows. We use modern development tooling and actively support sensible use of AI-assisted development tools, such as Codex, where they improve productivity, code understanding, testing, or development workflow.
Why Join Us We are a smaller engineering team where developers are encouraged to contribute ideas, improvements, and innovation - not simply complete assigned tasks. Developers work directly with the CEO within a flat management structure. This gives the development team direct access to someone with hands-on software development, architecture, customer, and investigator experience. Your input will directly influence products, workflows, technical direction, and long-term development decisions across the company. This is not an environment where developers are treated as interchangeable resources or isolated from decision-making. Your ideas will be heard, challenged, and where appropriate, implemented. This role suits developers who enjoy building real, long-term software products rather than short-lived web, marketing, or internal dashboard projects.
What Were Looking For We are ideally looking for someone with: Strong commercial Java development experience Experience developing desktop applications using Swing and/or JavaFX Strong understanding of Core Java and object-oriented programming Experience working within larger or long-term codebases Good debugging, analytical, and problem-solving skills Ability to work independently and take ownership of technical challenges Ability to think beyond individual tickets and contribute to longer-term product improvement Strong written and verbal English communication skills Experience with any of the following would also be beneficial: Multithreading/concurrency MySQL or SQLite JasperReports Git File parsing and processing AI-assisted development workflows Strong personal projects, GitHub work, or demonstrable practical coding ability are valued more highly than formal qualifications alone. Please include links to previous work, GitHub, portfolio projects, screenshots, or other examples in your CV or application where available.
Working Environment Based from our Stafford (ST18) office Office-based preferred, though hybrid working may be considered depending on experience and role fit Shortlisted candidates will be welcomed into the office as part of the process Full-time, permanent role Free onsite parking We support flexible working hours where possible. Most roles are based around a 7.5-hour working day, Monday-Friday, during normal office hours, with start and finish times agreed around team and business needs. Typical patterns may include 08:00-16:00, 09:00-17:00, or 10:00-18:00.
What We Offer £35,000 - £45,000 depending on experience depending on experience, capability, and level of responsibility Long-term stable product development work Real influence within a growing engineering team Direct involvement in product and technical direction Modern development environment and tooling Sensible use of AI-assisted development tools Opportunities for progression and increased technical responsibility over time Friendly, supportive, and low-bureaucracy working environment
Important Note This role is specifically focused on Java desktop software engineering. Applicants focused primarily on web development frameworks are unlikely to be suitable for this position. Please include an up-to-date CV. A formal cover letter is not required, but a short note explaining your relevant Java desktop experience, project examples, or links to previous work is welcome. We review applications as they arrive and aim to contact suitable candidates promptly rather than waiting until the closing date. The role may close once we find the right candidate, so early applications are encouraged. Direct applicants only - no recruitment agencies.
TPBN1_UKTJ
Languages
- English
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