Senior Software Engineer (Java) – Greenfield Cyber Security SaaS Solutions

TechHeads; Greater London; On-site; GBP 50,000 - 60,000; Full time

Job summary

TechHeads is seeking a Senior Software Engineer to work in a leading cybersecurity firm, focusing on building innovative SaaS solutions. This permanent position in central London offers the chance to lead backend design for enterprise-grade systems, utilizing Java and Spring Boot within a collaborative environment. Ideal candidates will possess extensive experience in Java, modern API design, and a passion for cybersecurity.

Benefits

Equity

Healthcare

Qualifications

• 7+ years of professional experience in software engineering.
• Solid understanding of backend development using Java.
• Experience with cloud infrastructure and DevOps tools.

Responsibilities

• Design, develop, and maintain Java-based backend services.
• Contribute to infrastructure modernization efforts.
• Lead engineering best practices and mentor junior developers.

Skills

Java

Spring Boot

Kafka

PostgreSQL

RabbitMQ

Education

None specified

Tools

Kubernetes

AWS

GCP

Azure

Job description

Senior Software Engineer (Java) – Greenfield Cyber Security SaaS Solutions

TechHeads Greater London, England, United Kingdom

Senior Software Engineer (Java) – Greenfield Cyber Security SaaS Solutions

TechHeads Greater London, England, United Kingdom

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This range is provided by TechHeads. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

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Recruitment Consultant with TechHeads, operating in the Technology sector.

Senior Software Engineer (Java) – Greenfield Cyber Security SaaS Solutions

TechHeads is proud to partner with a global cybersecurity leader on a high-impact opportunity for a Senior Software Engineer. This permanent role based onsite in central London (5 days a week), offers the chance to work shoulder-to-shoulder with a world-class team on complex, secure SaaS systems powering global enterprises.

As a Senior Backend Engineer, you’ll play a key role in designing and building greenfield backend services using Java and Spring Boot, with a strong emphasis on DevOps, automation, and performance at scale. You'll help shape technical direction, lead by example in code quality, and champion best practices across the team.

You’ll be working on the core of next-gen cybersecurity products, including enterprise-grade systems built from the ground up. With a focus on innovation and engineering excellence, this role offers real technical ownership and the chance to make architectural decisions that scale globally.

You’ll be part of a forward-thinking, collaborative team where ideas are shared, voices are heard, and initiative is rewarded. This is an opportunity to grow fast, work on meaningful problems, and expand your skills in a technically rich environment.

If you're looking to elevate your career, build secure and scalable systems, and play a key role in a global product roadmap, we want to hear from you.

Responsibilities:

• Design, develop, and maintain Java-based backend services using Spring Boot, REST/GraphQL, Kafka, PostgreSQL, and RabbitMQ.
• Contribute to infrastructure modernisation efforts, working closely with DevOps teams on Kubernetes, CI/CD pipelines, and legacy system migrations.
• Innovate across the stack, taking ownership of key projects and delivering performant, scalable solutions.
• Lead engineering best practices including coding standards, unit testing, code reviews, and system architecture discussions.
• Support, coach, and mentor junior developers, fostering a culture of technical excellence and collaboration.
• Work closely with cross-functional teams, including product and engineering groups different countries/regions, to ensure alignment and execution.
• Build and deploy secure, resilient APIs (REST/GraphQL) and optimise the full software development lifecycle through automation.

Requirements:

• 7+ years of professional experience in software engineering, with a strong focus on Java backend development.
• Solid understanding of Spring Boot, Kafka, RabbitMQ, PostgreSQL, and modern API design patterns.
• Hands-on experience or familiarity with DevOps tools and concepts – e.g. Kubernetes, Git-based CI/CD, cloud infrastructure (AWS/GCP/Azure).
• Strong grasp of software security principles, system performance optimisation, and infrastructure reliability.
• Experience working on large-scale, production-grade systems with distributed architectures.

Nice to Have:

• Exposure to tools like Elasticsearch/Kibana, Hadoop/HBase, OpenSearch, or VPN/proxy architectures.

Ideal Candidate will:

• Bring technical vision, initiative, and a passion for exploring and implementing emerging technologies.
• Are a natural technical leader with experience mentoring engineers and driving engineering quality across teams.
• Enjoy solving complex problems and have a product mindset with an eye toward continuous improvement.

Compensation:

• Benefits: Equity, Healthcare and More

If you would like to be considered for this position, please share a copy of your updated CV to [e-mail]

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Information Technology, Consulting, and Engineering

• Industries

  Software Development, Computer and Network Security, and IT System Custom Software Development

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