Java Developer

Backend Java Developer | £40,000 - £55,000 | Guildford | Hybrid

At Jonothan Bosworth | Recruitment Specialists, we’re seeking a skilled Backend Java Developer with experience ideally in the telecommunications sector, to join a fast-growing technology provider.

With ambitious growth plans and investment backing, this is a chance to join a forward-thinking engineering team where you’ll make a real impact. to design and implement high-availability, mission-critical backend systems.

You’ll join a collaborative engineering team delivering scalable solutions for global telecom operations.

What you’ll do

• Design & build: Develop and maintain backend services and microservices using Java.
• Collaborate broadly: Work with cross-functional teams to deliver scalable telecom solutions.
• Optimise performance: Integrate databases, APIs, and ensure efficiency across systems.
• Harden systems: Implement redundancy, security, and performance tuning for telecom operations.
• Problem-solve: Troubleshoot challenges in distributed systems and live client environments.
• Contribute to Agile: Participate in code reviews and ensure best practices across the lifecycle.

What we’re looking for

• 4+ years’ hands-on backend Java development experience.
• Strong expertise in RESTful APIs and microservice architectures.
• Background in distributed systems, OOP, and networking fundamentals.
• Cloud environment experience (AWS, GCP, etc.), plus Docker/Kubernetes and CI/CD.
• Proven track record optimising apps for performance, memory, and scalability.
• SQL/NoSQL database experience, including deployment and integration.
• Knowledge of messaging systems (Kafka, RabbitMQ, Pub/Sub).
• Excellent communication and analytical skills.

Nice to have:

• Telecom-specific protocols (SMPP, SIP), OSS/BSS integrations, or network APIs.
• Event-driven systems, CQRS, or high-redundancy architectures.
• Security scanning, testing, Git, and Agile/Scrum experience.
• Interest in Kotlin.
• Bachelor’s degree in computer science, Engineering, or related field.

You’ll be excited about contributing to a growing team and product.

What’s in it for you

Health cash plans, enhanced parental leave, and ongoing training opportunities.

Fun team events and industry networking opportunities.

A supportive “Team First” culture that prioritises growth and wellbeing.

A workplace committed to diversity, inclusion, and equal opportunity.

Contact Claire at Jonothan Bosworth Recruitment Specialists today to learn more.

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We are committed to diversity, inclusion, and equality. As an equal opportunities employer, we celebrate diversity and are active advocates against modern slavery. We prohibit any form of discrimination or harassment based on race, color, sex, religion, sexual orientation, national origin, disability, genetic information, pregnancy, or any other protected characteristic.