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I’m a results-driven freelance Node.js web developer with 6 years of full-stack experience delivering production-grade web apps. I specialize in building secure REST APIs with Node.js, Express, and NestJS, and I work with databases like MongoDB and PostgreSQL. I excel at implementing feature enhancements, debugging critical issues, and adding lightweight frontend components with React and TypeScript. I leverage Git and CI/CD to streamline deployments, optimize queries for performance, and collaborate effectively with cross-functional teams.…I’m a results-driven freelance Node.js web developer with 6 years of full-stack experience delivering production-grade web apps. I specialize in building secure REST APIs with Node.js, Express, and NestJS, and I work with databases like MongoDB and PostgreSQL. I excel at implementing feature enhancements, debugging critical issues, and adding lightweight frontend components with React and TypeScript. I leverage Git and CI/CD to streamline deployments, optimize queries for performance, and collaborate effectively with cross-functional teams.

Daniel Jablonski

Full Stack Developer, Front-End Developer, Back-End Developer, +3

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I’m a results-driven freelance Node.js web developer with 6 years of full-stack experience delivering production-grade web apps. I specialize in building secure REST APIs with Node.js, Express, and NestJS, and I work with databases like MongoDB and PostgreSQL. I excel at implementing feature enhancements, debugging critical issues, and adding lightweight frontend components with React and TypeScript. I leverage Git and CI/CD to streamline deployments, optimize queries for performance, and collaborate effectively with cross-functional teams.…I’m a results-driven freelance Node.js web developer with 6 years of full-stack experience delivering production-grade web apps. I specialize in building secure REST APIs with Node.js, Express, and NestJS, and I work with databases like MongoDB and PostgreSQL. I excel at implementing feature enhancements, debugging critical issues, and adding lightweight frontend components with React and TypeScript. I leverage Git and CI/CD to streamline deployments, optimize queries for performance, and collaborate effectively with cross-functional teams.

Available to hire

I’m a results-driven freelance Node.js web developer with 6 years of full-stack experience delivering production-grade web apps. I specialize in building secure REST APIs with Node.js, Express, and NestJS, and I work with databases like MongoDB and PostgreSQL.

I excel at implementing feature enhancements, debugging critical issues, and adding lightweight frontend components with React and TypeScript. I leverage Git and CI/CD to streamline deployments, optimize queries for performance, and collaborate effectively with cross-functional teams.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Advanced

Work Experience

Full-Stack Engineer at Softeq

January 1, 2023 - Present

Owned end-to-end delivery of web features spanning React frontends, API services, and data layers, with emphasis on performance, reliability, and integration. Integrated Ethereum wallet connections using Web3.js for secure smart contract interactions. Implemented real-time UI updates via WebSocket events, optimized rendering and API usage, and designed authentication flows with JWT-based security. Collaborated with backend teams to align smart contract events with API contracts and frontend state, and established CI/CD pipelines and monitoring for reliable deployments.

Full Stack Engineer at Miquido

January 1, 2021 - December 31, 2023

Developed production-grade React and TypeScript UIs tightly integrated with REST and GraphQL APIs; built reusable UI components and shared state patterns; implemented token-based authentication; enabled real-time feedback; collaborated with QA and product teams to improve automated testing and reduce regression risk.

Full stack Engineer at Pragmatic Coders

January 1, 2019 - December 31, 2021

Delivered client-facing web systems from discovery through production, focusing on clean architecture, integrations, and iterative delivery. Built backend integrations with third-party systems to ensure reliable data exchange and predictable frontend behavior. Introduced API versioning, feature flags, and structured logging to improve deployment safety and debugging efficiency. Worked directly with stakeholders to demo frontend functionality, gather feedback, and iterate within agile sprint cycles. Mentored junior engineers on frontend patterns and TypeScript codebases.

Backend Developer at Cubix

January 1, 2017 - December 31, 2019

Developed fintech backend services and supporting frontend components with focus on security and reliability. Implemented RBAC and API validation to strengthen security and prevent unauthorized data access. Delivered React-based frontend components for dashboards and internal workflows. Improved observability through structured logging and monitoring, supporting faster diagnosis of production issues.