Senior Backend Engineer - Scalable Systems for Cybersecurity

VulnCheck; Cheltenham; On-site; GBP 70,000 - 100,000; Full time

Benefits offered by this job

Unlimited PTO

401k plan

Healthcare coverage

Parental leave

Remote-friendly

Phone & Internet

Job summary

VulnCheck is seeking a Senior Software Engineer to design, build, and scale the core systems powering vulnerability intelligence. You will own services end‑to‑end, influence architecture, and drive durable, scalable solutions across production workloads.

Based in or around Cheltenham, UK, this remote‑friendly role emphasizes on‑call resilience, performance improvements, and collaboration with Product, Data, and other Engineering teams.

Qualifications

• 5+ years of experience building and scaling backend systems.
• Strong programming skills in Python, Go, Java.
• Experience designing distributed systems and working with microservices architectures.
• Deep understanding of APIs, system design, and cloud infrastructure (AWS preferred).
• Experience working with data pipelines, ETL systems, or high‑volume data processing.
• Proven ability to debug and optimize production systems.
• Strong ownership mindset with the ability to lead projects independently.
• Excellent communication skills and ability to collaborate cross‑functionally.

Responsibilities

• Design and build scalable backend systems, APIs, and data pipelines.
• Own services end‑to‑end, including architecture, development, deployment, and operation.
• Lead technical design discussions and contribute to system architecture decisions.
• Write high‑quality, maintainable code and drive engineering best practices.
• Debug complex production issues and implement long‑term, scalable solutions.
• Improve system performance, reliability, and observability across the platform.
• Partner closely with Product, Data, and other Engineering teams to deliver impactful features.
• Mentor junior engineers and contribute to a strong engineering culture.
• Participate in incident response and on‑call rotations.

Skills

Backend

Python

Go

Java

Distributed systems

APIs

AWS

Data pipelines

Debug production

Ownership

Communication

Tools

AWS

Job description

VulnCheck is seeking a Senior Software Engineer to design, build, and scale the core systems powering vulnerability intelligence. You will own services end‑to‑end, influence architecture, and drive durable, scalable solutions across production workloads.

Based in or around Cheltenham, UK, this remote‑friendly role emphasizes on‑call resilience, performance improvements, and collaboration with Product, Data, and other Engineering teams.