Radosław Dejnek

Senior Go Consultant (B2B) - Topi GmbH engagement

APR 2026 - PRESENT · 5 months

Building Go services and React frontend for post-acquisition integration with PEAC: order routing, risk assessment, and event-driven communication between platforms.

Senior Go Consultant (B2B) - Sii Sp. z o.o. engagement

JAN 2026 - APR 2026 · 4 months

Eliminated noisy neighbor bottleneck on SAP/BAPI write integration; restored end-to-end distributed tracing with log correlation in Datadog; reduced log volume and improved incident response.

Senior Go Consultant (B2B) - Daftcode Sp. z o.o. engagement (Kryptonim Card)

AUG 2025 - NOV 2025 · 4 months

Engineered Strong Customer Authentication (SCA) system; established core reliability metrics.

Senior Go Developer → Tech Lead

JUL 2021 - JUN 2025 · 4 years

Designed solutions within microservice-based architecture from business requirements; took ownership of architecture practices and documented the system using the C4 model after promotion to Tech Lead in 02.2025. Built async tracking pipelines processing ~8M messages/month. Built internal E2E testing tooling. Conducted 20+ technical interviews and helped onboard 4 engineers.

Go Developer

APR 2021 - JUL 2021 · 4 months

Broadcast and Sound Engineer

JAN 2016 - JAN 2021 · 5.1 years

Full-stack Web Developer

JAN 2011 - JAN 2018 · 7.1 years