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Senior Software Engineer
About On The Spot
About the team
Vetric builds large-scale public data infrastructure.
They provide data pipelines that collect, structure, and deliver high-volume public web data for companies operating in cybersecurity, public safety and digital risk protection.
The systems power platforms that detect bad actors, uncover impersonation and fraud, identify coordinated manipulation, and help public safety organizations respond faster to real-world risks.
Operating globally, they serve industry leaders across more than 20 countries who rely on them for scale, reliability, and depth.
About the role
We’re looking for a highly skilled Senior Software Engineer to help Vetric build a brand-new product from the ground up.
You’ll play a key role in designing and developing high-scale, event-driven backend systems, working closely with product and engineering teams in a fast-moving environment.
This is a hands-on role for someone who thrives in ambiguity, learns quickly, and enjoys shaping architecture early on.
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Responsibilities
- Develop and maintain backend services using Node.js and TypeScript
- Design and implement high-performance APIs and event-driven architectures on AWS
- Build scalable, reliable systems capable of handling intensive workloads
- Lead feature development end-to-end — from design to production
- Collaborate closely with product and cross-functional engineering teams
- Mentor teammates and promote best practices in code quality, testing, and security
- Continuously adapt as the product evolves and new challenges emerge
Requirements
- 5+ years of hands-on experience with Node.js and TypeScript in production
- Strong experience with AWS services (e.g., Lambda, ECS, S3, RDS)
- Deep understanding of system design, scalability, and event-driven architecture
- Experience with modern testing frameworks (Vitest, Jest, Playwright)
- Strong problem-solving skills and ability to work independently
- Excellent communication skills in English
- Ability to thrive in a dynamic, fast-paced environment
Nice to have
- Experience with GO
- Background in distributed systems or event-driven platforms.
- Experience working with LLMs or modern AI tooling.
- Knowledge of React.
- Experience with SQL and NoSQL databases
- Experience with Docker, Kubernetes, and CI/CD best practices.
Why Vetric
Vetric is profitable from day 1 (fully bootstrapped - means we didn’t raise any money), a fast-growing company building foundational technology.
As part of Vetric's broader R&D expansion, they're building their key engineering hub in Krakow that will own core systems and drive the next phase of innovation and growth.
Benefits
- Competitive compensation aligned with the Kraków tech market (UoP or B2B options).
- Paid vacation — 23 business days per year, 100% sick leave payment
- 10 sick days per year
- Hybrid work model in Kraków.
- Opportunity to shape a new product from day one.
- High ownership and real impact.
- Work in an international, English-speaking engineering environment.
- A stable, profitable company with long-term vision.
Join us
To be considered for this position, you must have Polish citizenship, a D-type work visa, or a residence permit. Thank you!
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