Backend & Cloud Engineer
Production NestJS microservices and the cloud infrastructure they run on — AWS, Kubernetes, or both — for B2B SaaS, marketplaces, and regulated platforms. Delivered through Big Bad Wolf, working remotely with international teams from Gdańsk. Available for advisory, architecture retainers, and code-review engagements alongside current work (10–20 h/week).
NestJS, TypeScript, Node.js. Multi-tenant APIs, CQRS, event-driven and durable-workflow architectures (Temporal.io). tRPC + Zod contracts, payments, identity, RBAC/ABAC.
AWS Serverless (Lambda, Step Functions, EventBridge) and Kubernetes (Helm, ArgoCD, Istio). Terraform with 100+ modules in production. GitHub Actions / GitLab CI/CD. Vault, OpenTelemetry, security-pipeline tooling.
Agentic systems on NestJS + Temporal with human-in-the-loop approval gates. Photogrammetry SaaS (darkponyfactory.pl): multi-stage GPU pipeline on Modal — BiRefNet (T4) for AI background masking, COLMAP + OpenMVS (A10G) for sparse SfM, dense stereo reconstruction, and mesh texturing. Full NestJS backend, Keycloak auth, Prometheus + Loki + Grafana observability.
One-off or ongoing architectural reviews — system design, tech-debt triage, scaling decisions. Async-friendly; typical cadence: 1–2 calls/week + written artefacts.
Hands-on backend or platform work within your team. Up to 20 h/week alongside existing commitments. NestJS, AWS Serverless, Kubernetes.
Targeted review of backend services, IaC, or CI/CD pipelines — delivered as a written report. One-time or recurring.
Interested? wrobel.adrian1988@gmail.com
Backend platform engineering on an Nx monorepo of NestJS microservices running on Kubernetes — Temporal.io durable workflows, tRPC + Zod contracts, Drizzle on PostgreSQL. Platform layer: Helm, ArgoCD, Istio, HashiCorp Vault, Grafana LGTM + OpenTelemetry. Automated static analysis and dependency scanning pipeline maintaining a clean vulnerability posture across all environments. Agentic workflow systems with human-in-the-loop approval. GDPR-aligned platform under strict data-protection requirements.
B2B Expert Network SaaS on AWS Serverless. Designed the multi-tenant API platform with CQRS and event-driven patterns. Built an automated engagement pipeline, a graph-based recommendation system on Amazon Neptune, and a real-time high-throughput event-processing pipeline (MongoDB Change Streams → Kinesis). Owned 100+ Terraform modules across four environments with fully automated CI/CD. Led backend & DevOps hiring, performance reviews, and team growth.
One of the world's largest coworking marketplaces. Developed serverless v3 APIs on NestJS + AWS Lambda with a hybrid SQL search engine (PostgreSQL + ParadeDB) and geospatial capabilities. Maintained a modular monolith of 250+ models managing global booking lifecycles, dynamic pricing, and Stripe payment processing. Engineered high-volume data sync pipelines (GraphQL + EventBridge) aggregating real-time global inventory across major workspace providers. Reduced async processing overhead through optimized SQS queue architecture and deployment workflow improvements.
Backend and DevOps engineering for international clients delivered through a Polish software house. AWS and Kubernetes infrastructure, CI/CD pipelines, and containerization strategies across multiple product engagements. Notable project: aarmy.com.
End-to-end image-to-3D-mesh SaaS. NestJS API with Drizzle ORM on Neon PostgreSQL, Keycloak OIDC auth, and a React dashboard on Cloudflare Pages. Multi-stage GPU pipeline on Modal: BiRefNet (T4) for AI background masking, then COLMAP 3.11.1 + OpenMVS on A10G for photogrammetric reconstruction — sparse SfM, dense stereo, triangle meshing, and UV texturing. Cloudflare R2 object storage with presigned direct uploads. Full observability: Prometheus, Loki, Grafana. Deployed via Docker Compose on Hetzner VPS, Caddy for TLS termination, GitLab CI/CD for automated image builds and SSH deploy. darkponyfactory.pl
7+ years engineering production backends, with deeper roots in the Node.js / AWS ecosystem and a strong DevOps / IaC discipline. Engineering leadership background — technical recruiting, performance reviews, and mentoring backend and DevOps engineers.
Postgraduate in Cybersecurity (Jagiellonian University, 2024–2025) — security-first thinking integrated into architectural decisions rather than bolted on later.
Working with international teams in English. Based in Gdańsk, Poland.
Open to new engagements — architecture advisory, embedded retainer, or code review. Typical response time: within 24 hours.