At a Glance
- Tasks: Design and build scalable backend services for real-time data protection.
- Company: Join Harmonic Security, a leader in AI-driven cybersecurity solutions.
- Benefits: Competitive pay, equity, flexible work, and generous PTO.
- Other info: Be part of a small, dynamic team that values creativity and growth.
- Why this job: Shape the future of cybersecurity while working with cutting-edge technology.
- Qualifications: Strong Java development experience and a passion for security.
The predicted salary is between 36000 - 60000 £ per year.
About Harmonic Security
Harmonic Security lets teams adopt AI tools safely by protecting sensitive data in real time with minimal effort. It gives enterprises full control and stops leaks so that their teams can innovate confidently. We are led by cybersecurity experts and backed by top investors including N47, Ten Eleven Ventures, and In‐Q‐Tel. As AI tools rapidly become embedded in everyday workflows, the systems that connect, secure, and make sense of that activity are becoming mission‐critical. This role sits at the core of Harmonic's platform: building the backend services and integrations that power real‐time data protection, visibility, and control across complex customer environments. You'll help design and operate the foundational infrastructure that enables Harmonic to understand user intent, process high‐volume event data, and enforce security decisions at scale. This work directly shapes the product, the customer experience, and the category we're defining.
About The Team
Our Product Delivery team is the engine that turns vision into impact. We ship early and often, getting valuable features into the hands of customers quickly and iterating from there. We work in the open by default, sharing progress and ideas, and we trust each other to own outcomes. We're a small but mighty crew where every person plays a critical role and we're committed to using AI to work smarter and faster.
About The Role
We're looking for a Backend Engineer who has an appreciation for all things security and system interconnectivity. This is a very hands‐on technical role where you will be responsible for designing, building and maintaining scalable integrations between our core applications, identity providers and data security platforms.
What You'll Do
- Own deliveries and features from start to finish
- Design, build, and own backend services in a microservices‐based, event‐driven architecture
- Implement core domain logic that drives key product workflows and system behavior
- Ingest and process high‐volume usage and event data from customer‐facing endpoints
- Build backend services that support operational, analytics, and reporting use cases
- Model, persist, and manage domain data, enabling querying, filtering, and lifecycle management
- Expose well‐designed APIs and webhooks consumed by customers, UIs, and external systems
- Power customer‐facing UI experiences by providing backend APIs for visibility, analytics, and configuration
What Success Looks Like
- Features you've built are widely adopted, reliable, and delivered quickly without sacrificing quality
- Performance, scalability, maintainability, and high engineering standards are baked into every release
- You are seen as a trusted partner by product, design, and engineering peers
Requirements
- Strong development experience in the Java ecosystem
- Experience building and operating event‐driven systems in distributed architectures
- A track record of delivering performant, reliable and scalable applications
- Excellent collaboration and communication skills in cross‐functional teams
You Might Be a Fit if You...
- Love the idea of blending software development, distributed systems and data‐intensive applications
- Thrive in fast‐paced startup environments where ambiguity is the norm
- Enjoy shaping culture and engineering practices, not just writing code
- See AI as a tool to help you build smarter, faster and better
Benefits
- Competitive pay and meaningful equity with a direct stake in Harmonic's success
- Comprehensive benefits, pension plan, generous PTO, and flexible hybrid work
- A small, passionate team that values transparency, creativity, and learning
- Thoughtful leadership that cares deeply about growth, impact, and people
- Annual global offsites (past trips include Lisbon and Nashville)
- The chance to directly shape both our product and our culture as we build a category‐defining company
Harmonic's Core Values
- Flourish in the Unknown: We relish being thrown into new, unfamiliar situations that require initiative and rapid decision‐making. We orient ourselves quickly and deliver results with minimal guidance.
- Never Full: We never hesitate to raise our hands and take on challenges to assist those in need. We hunger for opportunities to learn and do more.
- Perfect Harmony: We have a genuine willingness to assist and support one another to create cohesion and unity. We foster success through collaboration and honest sharing of feedback and ideas, enabling everyone to grow and produce their best work.
Position Details
- Seniority level: Mid‐Senior level
- Employment type: Full‐time
- Job function: Other
- Industry: IT Services and IT Consulting
Senior Backend Engineer in London employer: Harmonic Security
Harmonic Security is an exceptional employer that fosters a dynamic and innovative work culture, where employees are empowered to drive growth in the rapidly evolving field of AI and cybersecurity. With a strong focus on professional development, we offer ample opportunities for career advancement and skill enhancement, making it an ideal place for ambitious sales professionals. Located in the UK, our team enjoys a collaborative environment that values creativity and encourages meaningful contributions to shape the future of security technology.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Backend Engineer in London
✨Get Involved in the Cybersecurity Community
Diving into the cybersecurity community is key for landing that full-time gig. Join forums like Reddit's r/cybersecurity or attend local meetups to connect with industry veterans and other job seekers. Networking is everything in this field—don’t just be a passive lurker!
✨Show Off Your Skills with Capture the Flag Competitions
Participate in Capture the Flag (CTF) competitions; these are not just a fun way to boost your skills but also a chance to showcase your talent to potential employers. Many companies, including Harmonic Security, love seeing candidates who actively engage in these challenges.
✨Tailor Your Online Presence
Make sure your LinkedIn and any professional profiles reflect your cybersecurity expertise. Share your projects, whether they’re personal or from a previous role, to catch the eye of hiring managers. This is how they’ll find your passion and commitment to the field!
✨Apply Directly Through Harmonic Security
Don’t forget to head straight to our website and check out any openings for cybersecurity roles at Harmonic Security. Applying directly can sometimes give you an edge, especially if you can mention that you've been following our work or engaging in the community.
We think you need these skills to ace Senior Backend Engineer in London
Some tips for your application 🫡
Show off your technical skills:In cybersecurity, it's crucial to highlight your technical prowess. Make sure your CV showcases specific skills like network security, penetration testing, or threat analysis. If you have relevant certifications (like CEH or CISSP), pop those on the front page to grab attention!
Tailor your portfolio for the role:Even for a full-time role, a portfolio can set you apart. If you've worked on any cybersecurity projects—be it CTF challenges, security assessments, or research papers—include these in your application. This demonstrates not just your skills, but also your hands-on experience!
Use real-world examples:When writing your cover letter, don’t just stick to your qualifications. Share real-world examples of how you’ve tackled security issues or vulnerabilities. This gives the hiring team at Harmonic Security insight into your practical problem-solving abilities and makes your application memorable.
Demonstrate your passion for cybersecurity:Cybersecurity is an ever-evolving field, so show us that you’re always learning! Mention any recent courses, webinars, or industry events you’ve attended. This not only exhibits your enthusiasm but also signals to Harmonic Security that you’re committed to staying ahead in the game.
How to prepare for a job interview at Harmonic Security
✨Sharpen Your Technical Skills
For a role in cybersecurity, it’s essential to be up-to-date with the latest tools and techniques. Brush up on your knowledge of firewalls, intrusion detection systems, and vulnerability assessment tools. Be ready to discuss specific scenarios where you’ve applied these skills, as hands-on experience can really set us apart in interviews.
✨Prepare for Scenario-Based Questions
Expect the interviewers at Harmonic Security to throw in some hypothetical situations to see how you’d handle them. Think about common security breaches or incidents and be prepared to explain how you would respond. This not only shows your problem-solving skills but also your understanding of real-world cybersecurity challenges.
✨Highlight Your Certifications
Certifications like CompTIA Security+, CISSP, or CEH can give you a significant edge in a full-time role in cybersecurity. Make sure to mention these during your interview and be prepared to discuss what you learned through those certifications and how they relate to the position at Harmonic Security.
✨Show Your Passion for Cybersecurity
Since you’re going for a full-time gig, showing genuine enthusiasm for the field can make all the difference. Share any personal projects, blogs, or communities you’re part of that relate to cybersecurity. This not only showcases your passion but also your commitment to staying engaged in this ever-evolving field.
