Looking for a job

Nikita Klochko

@nikitaklochko

Backend-oriented full-stack engineer building reliable APIs, architecture, and transaction flows with Node.js and NestJS.

Ukraine

Message

What I'm looking for

I’m looking for a team where I can own backend architecture and API development (REST/GraphQL), build reliable transaction-focused systems, and contribute end-to-end with frontend when needed—while continuing to improve code standards and mentor teammates.

I’m a backend-oriented full-stack engineer with 4.5+ years of experience building backend systems in Node.js and NestJS. I design REST APIs and backend architecture from scratch, contribute to data modeling, and integrate third-party services—always with a focus on transaction flows, data consistency, and reliability.

In my recent roles, I’ve taken ownership of backend decisions, led backend development (2 developers), and introduced code standards using a lightweight DDD approach. I also maintain and extend production systems, develop new backend functionality to MVP, and mentor junior developers while staying hands-on in implementation.

Experience

Work history, roles, and key accomplishments

Current

Backend Engineer

Current

Red Rocket Software

Nov 2025 - Present (7 months)

Led backend development for a CRM/ERP system (2 developers) and owned backend architecture and coding standards using a lightweight DDD approach. Built transaction-focused REST APIs and implemented PostgreSQL/TypeORM database schemas; currently working on file attachment functionality.

NestJS TypeORM PostgreSQL REST APIs DDD AWS S3 EC2 ECS Lambda ESLint Prettier Git (Pre Commit Validation)

Full-Stack Developer

Binerals

Oct 2021 - Oct 2023 (2 years)

Developed and maintained backend services using Node.js, Express, and GraphQL, and integrated Stripe subscriptions processing. Maintained and refactored the GraphQL API and schema to improve maintainability and stability over a 2-year period.

Express GraphQL React MySQL Docker Stripe API Development Refactoring

Full-Stack Developer

PrivatBank

Aug 2020 - Sep 2021 (1 year 1 month)

Designed and built a full-stack internal tool from scratch using Express and Angular, including MongoDB (Mongoose) data models and backend logic. Implemented APIs for managing and querying data and collaborated with stakeholders to refine requirements and usability.

Angular Express MongoDB Mongoose API Development Data Modeling

Frontend Mentor

Hillel IT School

Mar 2021 - Jul 2021 (4 months)

Mentored students in the “Front-End Basic” course by reviewing HTML/CSS/markup and providing feedback to improve code quality. Delivered additional sessions to clarify complex topics over a 6-month period.

HTML CSS Code Review Student Mentoring