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Lead Backend Engineer
About On The Spot
About the team
We’re building a local Polish team for a company in the cybersecurity domain.
We'll be happy to tell you more about the product during the interview process.
About the role
This is a hands-on engineering leadership role for someone who enjoys balancing technical depth with team leadership.
You'll own a critical product domain end to end, shaping its architecture, guiding delivery, and helping both the product and the team grow.
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Responsibilities
- Lead the team's delivery: own the committed items, plan and groom the roadmap, run sprint planning, and lead backlog analysis
- Work closely with Product Managers and other R&D managers to align priorities, manage dependencies, and translate product goals into an executable plan
- Drive architecture and design decisions across the team, where data correctness, customer-facing API stability, multi-tenant isolation, and pipeline reliability are first-class concerns
- Stay hands-on: write clean, concise, well-tested code on critical paths — primarily in Python, with Go for selected backend services
- Use AI agents to accelerate development, investigation, code review, and lead the team in building effective, safe agent-assisted workflows
- Diagnose complex issues, evaluate options, and recommend and execute the best solution
- Own the domain end-to-end, including DevOps: CI/CD, cloud infrastructure on AWS, and monitoring/alerting
- Lead the team's on-call rotation and production incident response for the domain
- Run team ceremonies, manage delivery against the roadmap, and grow team members
- Manage the performance of the team
Reuirements
- Bachelor's degree in Computer Science, Engineering, or relevant experience
- 7+ years of production software engineering experience
- Strong Python development experience, including web frameworks for Python (DRF, FastAPI, Flask, etc.)
- Hands-on Go development experience for backend services
- Practical experience using AI coding agents in day-to-day engineering, and a point of view on where they add the most value
- Experienced in building and supporting analytic systems
- Knowledge of designing and implementing event-driven systems
- Deep understanding of SQL database capabilities within web applications (PostgreSQL)
- Experienced with micro-service architecture and cloud-native services, focused on AWS cloud infrastructure
- Solid understanding of software design principles, concurrency, synchronization, memory management, data structures, algorithms, etc.
- 1+ year as a tech lead or team lead, with proven ability to plan and own delivery, make and defend technical decisions, and grow other engineers
- Ability to prioritize and organize effectively, with good communication skills
- Solid analytical and troubleshooting abilities
- English level — B2
Nice to have
- Experience defining team-wide practices for AI-assisted development (agent workflows, review and quality guardrails)
- Experience with modern analytics and data-pipeline tooling
- Experience building or maintaining publicly published developer or infrastructure-as-code tooling
- Experience owning customer-facing reliability and leading incident response
Benefits
At On The Spot, we’re creating a workplace people would want to stay in:
supportive, well-organized, and fair in terms of conditions and benefits.
We’ll share more about our benefit package during the interviews. In the meantime, you can always check our Glassdoor reviews.
Join us
Position is open to candidates in Poland. You need to have a residence permit or another valid document allowing work in Poland. Thank you!
