Senior Backend Engineer - Boom Technologies Ltd

Engineers who want to architect systems that power a global platform. We're building something that redefines how people interact with money, outside of the banking system. That takes backend engineers who can scale, secure, and future-proof critical infrastructure., * Design, build, and scale backend services with low latency, high throughput, and strong reliability.

• Implement secure APIs, integrations, and data flows that connect mobile apps with blockchain components.
• Collaborate closely with product owner, frontend, mobile, and blockchain engineers for seamless product delivery.
• Champion performance optimization, monitoring, documentation 1and observability.
• Lead code reviews, mentor teammates, and set engineering best practices.
• Stay ahead of emerging backend architectures and distributed systems approaches.

• 5+ years of backend development experience (Node.js, Go, Java, or similar).
• Strong understanding of scalable system design, microservices, and cloud infra (AWS/GCP/Azure).
• Expertise in databases (SQL + NoSQL), caching, and data pipelines.
• Familiarity with security, authentication, and encryption best practices.
• Problem-solving mindset and ability to thrive in high-intensity, fast-moving environments.

Nice to Have :

• Experience with event-driven architectures and real-time data.
• Exposure to blockchain integrations or Web3 APIs.
• Background in fintech, marketplaces, or high-traffic consumer platforms.

Extra Perks at Boom

• Crescending Salary (First 90 Days): you prove impact, we ramp your pay up, faster than most companies promote.
• Stock Options (Post 90 Days): real ownership. Not play money, but a meaningful equity stake in Boom's future.
• Missionary Bonus: milestone-based cash or digital asset rewards for those who go above-and-beyond expectations in the first year.
• Founder Access: direct collaboration with founders/leadership, not layers of management.
• Rapid Growth Path: prove yourself in 90 days and you won't just work on tickets, you'll lead initiatives.
• Onsite Culture: daily face-to-face collaboration in London.
• Wellbeing Support: private healthcare & wellness allowance (because missionaries need fuel, too).
• Time for Mastery: dedicated "Build Fridays" to experiment, refactor, or research new tech (mobile + blockchain).
• Immersive Offsites: team offsites (local & abroad) to reset, align, and celebrate wins together.

Compensation & Rewards

• Base Salary (London, senior-level):
• First 90 days: £5,500 * £7,500 * £9,500/month crescending structure.
• Post-90 days: £95,000 - £130,000+ full base salary depending on performance and seniority.
• Equity / Stock Options: meaningful ownership in Boom.
• Missionary Bonus: milestone-based cash or digital asset rewards.
• Healthcare & Wellness: private cover + allowance.