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I am a Senior Full Stack Engineer with 9+ years of experience delivering scalable, high-performance web and cloud applications. I work across the frontend with React, Vue, and Next.js, and the backend with Node.js, NestJS, and modern microservice architectures. I have led architecture and implementation efforts for large-scale systems, optimized databases, and driven initiatives around security, observability, and performance. I'm passionate about AI-driven innovation, real-time systems, and cutting-edge web technologies. I enjoy mentoring teams, shaping system design to reduce costs and boost performance, and collaborating with cross-functional groups to implement robust, secure, and resilient solutions.…I am a Senior Full Stack Engineer with 9+ years of experience delivering scalable, high-performance web and cloud applications. I work across the frontend with React, Vue, and Next.js, and the backend with Node.js, NestJS, and modern microservice architectures. I have led architecture and implementation efforts for large-scale systems, optimized databases, and driven initiatives around security, observability, and performance. I'm passionate about AI-driven innovation, real-time systems, and cutting-edge web technologies. I enjoy mentoring teams, shaping system design to reduce costs and boost performance, and collaborating with cross-functional groups to implement robust, secure, and resilient solutions.

Nikodem Macuk

Full Stack Developer, Web Developer, Programmer, +5

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I am a Senior Full Stack Engineer with 9+ years of experience delivering scalable, high-performance web and cloud applications. I work across the frontend with React, Vue, and Next.js, and the backend with Node.js, NestJS, and modern microservice architectures. I have led architecture and implementation efforts for large-scale systems, optimized databases, and driven initiatives around security, observability, and performance. I'm passionate about AI-driven innovation, real-time systems, and cutting-edge web technologies. I enjoy mentoring teams, shaping system design to reduce costs and boost performance, and collaborating with cross-functional groups to implement robust, secure, and resilient solutions.…I am a Senior Full Stack Engineer with 9+ years of experience delivering scalable, high-performance web and cloud applications. I work across the frontend with React, Vue, and Next.js, and the backend with Node.js, NestJS, and modern microservice architectures. I have led architecture and implementation efforts for large-scale systems, optimized databases, and driven initiatives around security, observability, and performance. I'm passionate about AI-driven innovation, real-time systems, and cutting-edge web technologies. I enjoy mentoring teams, shaping system design to reduce costs and boost performance, and collaborating with cross-functional groups to implement robust, secure, and resilient solutions.

Available to hire

I am a Senior Full Stack Engineer with 9+ years of experience delivering scalable, high-performance web and cloud applications. I work across the frontend with React, Vue, and Next.js, and the backend with Node.js, NestJS, and modern microservice architectures. I have led architecture and implementation efforts for large-scale systems, optimized databases, and driven initiatives around security, observability, and performance.

I’m passionate about AI-driven innovation, real-time systems, and cutting-edge web technologies. I enjoy mentoring teams, shaping system design to reduce costs and boost performance, and collaborating with cross-functional groups to implement robust, secure, and resilient solutions.

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Work Experience

Full Stack Engineer at Google

July 1, 2025 - September 9, 2025

Designed and implemented large-scale full-stack systems using React.js, Next.js, Node.js, and Python (FastAPI, Flask), serving millions of global users with high reliability. Spearheaded integration of LLMs, embeddings, and RAG pipelines into production services, powering AI-driven search, chatbots, and content personalization features. Developed PyTorch-based ML services for natural language understanding, improving query response accuracy by 35%. Architected and deployed serverless and containerized workloads on AWS Lambda, ECS, and Kubernetes (GKE) to achieve sub-second latency at scale. Built event-driven pipelines using S3, DynamoDB, and Pub/Sub, enabling processing of terabytes of data daily for analytics and personalization. Automated CI/CD pipelines with GitHub Actions, Docker, Kubernetes, Terraform, and CloudFormation, reducing deployment cycles from weekly to multiple times per day. Implemented robust testing frameworks with Jest, Cypress, and Playwright, driving 95% test cov

Full Stack Developer at ITFS

March 1, 2022 - September 9, 2025

Led the design and development of scalable web applications using React.js, Next.js, Node.js, and Python, serving thousands of daily users in finance and logistics domains. Delivered AI/ML solutions with LLMs, embeddings, and RAG pipelines, enabling semantic search and intelligent document classification that improved retrieval accuracy by 40%. Built and deployed PyTorch-based ML models for recommendation systems and anomaly detection, integrating them with production APIs. Architected and maintained backend microservices on AWS Lambda, ECS, and DynamoDB, ensuring high availability and low-latency response times. Automated CI/CD pipelines with GitHub Actions, Docker, Kubernetes, and Terraform, reducing release frequency from bi-weekly to daily. Defined Infrastructure-as-Code (IaC) workflows with Terraform and AWS CloudFormation, improving environment consistency and auditability. Developed secure APIs (REST & GraphQL) for ERP and data integration, enabling seamless communication across

Full Stack Developer at InfoConsulting

July 1, 2018 - September 9, 2025

Developed responsive frontends using React.js, Next.js, TypeScript, and JavaScript, improving UI performance and accessibility for enterprise clients. Built and maintained backend microservices with Node.js and Python (FastAPI, Express), supporting high-throughput APIs for business intelligence and ERP integrations. Implemented AI/ML features including LLM-powered assistants, RAG pipelines, and custom PyTorch models, enabling intelligent document search and recommendation systems. Designed end-to-end data workflows using AWS Lambda, ECS, S3, and DynamoDB, reducing infrastructure costs by 30% through serverless and containerized solutions. Automated CI/CD pipelines with GitHub Actions, Docker, Kubernetes, and Terraform/CloudFormation, cutting deployment time from hours to minutes. Applied infrastructure as code practices with Terraform and AWS CloudFormation. Contributed to AI-driven microservices by integrating NLP, embeddings, and vector databases into customer-facing search modules.

Senior Full Stack Engineer at Google

July 1, 2025 - September 23, 2025

Led end-to-end development of large-scale web applications using React.js, Next.js, Vue.js, Redux, React Query, Redux-Saga, and Material UI; architected backend microservices with Node.js and NestJS implementing event-driven patterns; enabled real-time collaboration with WebSockets, RxJS, XState, and gRPC; optimized multi-region SQL/NoSQL databases (PostgreSQL, MySQL, MongoDB, Redis) with sharding/replication; deployed on GCP and AWS using Kubernetes, Serverless (Cloud Run, Lambda) and Pub/Sub; improved CI/CD pipelines (GitHub Actions, Jenkins) and achieved high automation coverage; enhanced security and observability.

Full Stack Developer at ITFS

March 1, 2022 - September 23, 2025

Led development of scalable web applications with React.js, Vue.js, Redux, React Query, Redux-Saga, and Material UI; architected and maintained backend microservices with Node.js, NestJS, and Express; designed relational (PostgreSQL/MySQL) and non-relational (MongoDB/Redis) databases with indexing and caching; implemented real-time capabilities with WebSockets, RxJS, and XState; deployed AWS-based cloud-native and serverless architectures; built Electron-based desktop apps and leveraged WASM/IndexedDB; improved CI/CD pipelines (Jenkins, GitHub Actions) and testing automation.

Full Stack Developer at InfoConsulting

July 1, 2018 - September 23, 2025

Developed and maintained frontend applications using React.js, Vue.js, Redux, React Query, Redux-Saga, and Material UI; implemented backend services with Node.js, NestJS, and Express following microservices and event-driven patterns; designed SQL (PostgreSQL/MySQL) and NoSQL (MongoDB/Redis) data models; integrated WebSockets, RxJS, and XState for real-time features; deployed cloud-native solutions on AWS with serverless and containerized architectures; built Electron apps and leveraged WASM/IndexedDB for performance-critical client features; established CI/CD pipelines and expanded testing coverage.