Senior Software Engineer (R&D)

The Company

Harwin plc is a Portsmouth-based, family-owned precision engineering company on an ambitious global growth journey. With a strong international presence and a well-established partner network, the organisation has built a reputation over decades for quality, reliability, and long-term thinking.

As an employer, Harwin offers a distinctive environment shaped by its heritage and forward-looking mindset. The business is currently investing significantly in technology, digital transformation, and ways of working, alongside the development of a new headquarters and state-of-the-art manufacturing facility in Portsmouth.

This is a period of meaningful growth and evolution, with a clear ambition to scale capabilities and strengthen its global impact. At the same time, the values associated with family ownership remain central — fostering a culture that emphasises collaboration, accountability, and sustained success.

For those looking to develop their careers, Harwin provides the opportunity to contribute to a growing organisation while being part of a team that values both innovation and long-term perspective.

The Opportunity

We’re looking for a Senior Software Engineer to play a pivotal role in developing and optimising high-performance automated machinery and robotic manufacturing systems.

Working alongside an experienced and collaborative team, you’ll help drive innovation, improve production efficiency, and ensure our systems remain at the forefront of the connector industry.

What You’ll Be Doing

• Develop and maintain PLC programs (Mitsubishi iQ-R)
• Program and support Mitsubishi robotic systems (R-series)
• Configure and program Keyence vision systems (XG-X and CV-X)
• Integrate and program associated equipment (servo systems, RFID, inverters)
• Optimise and enhance existing software for performance and reliability

What We’re Looking For

• Strong PLC programming experience (essential)
• Knowledge of Ladder Logic, Structured Text, and/or Function Blocks
• Understanding of electronics to support software development
• Ability to adapt across programming languages and systemsHigh attention to detail and precision
• Strong communication skills and a collaborative mindset

Experience with Mitsubishi or Keyence systems is beneficial but not essential — training can be provided.

Why Join Harwin

• Competitive salary + bonus scheme
• 25 days holiday + bank holidays + extra festive closure
• Company pension & life cover (3x salary)
• Health Cash Plan & Employee Assistance Programme
• Opportunity to work in a growing, future-focused organisation
• Be part of a culture that values collaboration, innovation, and long-term success

Be Part of Something Meaningful

At Harwin, we combine the stability of a family-owned business with the ambition of a global leader. You’ll have the opportunity to grow your career while making a real impact in a company investing in its people, technology, and future.

Harwin is an equal opportunities employer committed to the fair and equitable treatment of all current and prospective employees. The organisation does not tolerate discrimination on the basis of age, disability, sex, sexual orientation, pregnancy and maternity, race or ethnicity, religion or belief, gender identity, or marital/civil partnership status.

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