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Lead Developer - Core Team

Lead Developer - Core Team


The Role

We are looking for a lead Java Engineer to join our growing Core development team.

Our Core team sits at the centre of our service-oriented platform and is comprised of four developers, an embedded tester and a team lead. As one of four teams totalling over 20 engineers, they are responsible for the nucleus of our solution which deals with the capture, storage, processing and retrieval of sensitive data.

There are a number of exciting new product enhancements in the pipeline for this team to work on over the next few months – these include greenfield development of a whole new product direction as well as adding new functionality to the existing product with the potential opportunity to re-design and re-write. Whilst these are ongoing the team will also maintain and modernise our existing platform with a strong focus on refactoring and removing technical debt that has accumulated over time and dealing with BAU support issues that crop up from time to time.


  • Lead the Java technical function within Semafone.
  • Design, communicate and document new features within the software solution in response to specific requirements from the product team and/or project teams.
  • Promote and communicate best industry practice within the development team. Mentoring and guidance of less experienced members of the team.
  • Delivering quality unit-tested code in Java 8 using the Spring framework – both individually and as a responsibility of the role in the wider team.
  • Ensuring that code quality of our solution is paramount and looking for ways to modernise existing application to improve performance and maintainability
  • Being responsible for team with estimates – high level to allow business decisions to be made and detailed once projects start.
  • To be involved in product and bespoke delivery discussion and add guidance on decisions made, in order to promote best practice and continual improvement of the solution
  • Being an active member of a sprint-focussed Agile team – including sprint planning, stand-ups and retrospectives.
  • Helping to improve the velocity of the team by committing to, and delivering, the work allocated.
  • Unit testing and demonstrating work to relevant stakeholders.
  • Occasionally acting as third line support where required, fixing priority bugs


Candidate requirements

  • Experience of Team lead role in a similar product focussed environment.
  • Demonstratable system design experience.
  • An expert understanding of Java 7 or higher and Spring (Core, JMS, AOP, Security)
  • Experience of working in a collaborative manner, regularly contributing to technical discussion and decisions
  • Experience writing JUnit and integration tests (we use Fitnesse)
  • Experience with ActiveMQ, MySQL, Maven, Git, Linux, Tomcat
  • Experience with multi-tenant cloud-hosted architectures and understanding of SOA
  • Experience with continuous integration (e.g. Jenkins, Docker)
  • Knowledge of designing and developing RESTful APIs
  • Ability to clearly communicate ideas to other stakeholders of varying backgrounds and a natural preference for contributing to a team's success
  • Desire to learn and stretch, keeping up to date with the latest trends and using these to drive product enhancements

Benefits & Culture

We are a market leader in secure voice transactions and trusted by our customers and partners.  We are on a journey to secure all personal data.  We recruit diverse, ambitious, innovative people who want to grow in a supportive and collaborative environment.  We are passionate, work hard, have fun and celebrate success.

What we'll give you;

  • 25 Days Holiday, increasing with length of service up to 28 days
  • Competitive Salary
  • Up to 10% Bonus
  • 4 x Salary Life Insurance
  • Vitality Health Insurance
  • HealthShield Cash Back Plan
  • Employee Assistance Programme
  • Bespoke Discounts and Communications Hub
  • Up to 5% Contributory Pension

Semafone is well funded and growing fast, you’ll be joining an organisation that combines an entrepreneurial ‘start-up’ culture with the professionalism of a mature and established business. This is a fabulous opportunity to gain experience on a variety of commercial matters of an international business.

*All final interview candidates will be subject to a DBS check as a pre-condition of a potential offer of employment. Any information found will be considered when making the final hiring decision. Please be aware that the background check process will not go ahead without your written consent.

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Pannell House
GU1 4HN Guildford Directions info@semafone.com 0845 543 0822

More than just a job...

Here at Semafone it's all about delivery and we pride ourselves in providing a flexible working environment which aims to support our staff as they journey through their career.  

For country-specific benefits check out each job role, but what else do you get besides your all important salary?

  • Bespoke Discounts & Communications Hub

    perkSTIR is our internal communications hub which houses a whole host of retailer discounts where you can literally save £/$000's a year!

  • Work / Life Balance

    We offer excellent time off benefits and promote flexible working whenever we can.

  • Great Physical Space

    We've got fabulous new offices in all locations. All mod-cons and tech'd up to the rafters it's a technologist's dream location.

  • Team Events

    We regularly get together as either individual teams, location-specific or the whole business. A highlight is our annual offsite, 'FraudSTIR' which involves internal and external presentations, team-building activities and lots of opportunities for socialising!

Workplace & Culture


Our company values aren't just words on a page to us.  They're intrinsic to the way we operate and vital to our success.  When they're effectively demonstrated wonderful things happen, so it's no wonder we recruit to our values and culture.


Already working at Semafone?

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