Adam Nowak

Owned delivery of a multi-tenant SaaS product with React and Next.js (SSR/ISR); designed service boundaries and migrated monolithic workflows into containerized microservices (Python/Django/Flask, Node.js, Java Spring Boot, .NET Core) to enable independent scaling and safer releases. Implemented event-driven processing with Kafka and RabbitMQ; ensured reliability with idempotency keys, retries, and DLQ patterns. Built applied AI capabilities (LLM/NLP) including summarization, classification, and semantic search; implemented RAG pipelines with embeddings and vector indexing using LangChain. Created secure REST and GraphQL APIs with strict validation, pagination, rate-limiting, and consistent error contracts; improved performance and reduced client over-fetching.

Led modernization of web apps using React.js, Next.js, and GraphQL; migrated legacy monoliths to containerized microservices on AWS; built production-grade mobile app in React Native with Firebase; implemented secure authentication (OAuth2/JWT), canary deployments, CI/CD with GitHub Actions; improved caching, observability, and performance.

Delivered a data-intensive analytics SaaS platform using TypeScript/React on the frontend and Python/Node.js services on the backend to support enterprise reporting and dashboards. Built ingestion and transformation services in Python and Java that processed high-volume telemetry, including schema evolution, validation, deduplication, and backfills. Designed performant data access layers on PostgreSQL and Redis, tuning indexes and query plans; reduced expensive report execution time by up to ~30%. Implemented asynchronous job orchestration for batch reports and scheduled analytics, added GraphQL for complex read use-cases, and introduced ML-assisted enrichment to improve data quality.