Raman Mastyka

Senior Full-stack Developer

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About Me

Senior Full-stack Developer with extensive experience in designing and implementing microservice architectures using .NET and Node.js. Proficient in cloud infrastructure with AWS, Terraform, and Ansible. Strong expertise in TypeScript/JavaScript ecosystem, React, Next.js for frontend development. Background in industrial automation brings unique problem-solving perspective to software engineering challenges. Technical team lead experience and multilingual communication skills in English, Polish, Russian, and Belarusian.

Contact Information

  • Location: Kraków, Poland

Skills & Expertise

Proficient

Node.js, TypeScript, C#, .NET, System Design, AWS Cloud, Infrastructure as Code (Terraform, Ansible), Docker, CI/CD, Git, GitHub Actions

Comfortable

React, Redux, Database Design, PostgreSQL, MySQL, Redis, Microservices Architecture, GRPC, Testing (NUnit, Jest), Observability

Familiar

Kubernetes, Network Administration, GraphQL, DynamoDB, Angular, Mobx, Google Cloud

Professional Experience

Digital Forest

  • Senior Full-stack Developer
    August 2019–Present

    Leading development of Node.js microservices with additional expertise in .NET. Architecting cloud infrastructure with AWS, Terraform, and Ansible. Supporting frontend development with React and TypeScript.

Senior Full-stack specializing in Node.js backend architecture and distributed systems. Designed and implemented high-performance microservices primarily using Node.js/NestJs and .NET Core with GRPC/REST communication. Established robust database solutions using PostgreSQL, MySQL, Redis. Led cloud infrastructure development using AWS services, Terraform, and Ansible. Implemented blockchain solutions with HyperLedger Fabric. Contributed to frontend development using TypeScript and React when needed.

NextApp

  • Node.js Backend Developer
    August 2018–July 2019
  • Built scalable Node.js/Express.js backend services with REST APIs
  • Designed and implemented data management solutions using Redis and Clickhouse databases
  • Developed microservices architecture using Node.js and Express
  • Created Natural Language Processing solutions using Google DialogFlow and nlp-js
  • Implemented comprehensive testing using Jasmine and Mocha
  • Supported frontend development using TypeScript and React

Allvision

  • Software Engineer
    November 2016–August 2018

Worked with building automation systems and audio-video equipment. Programmed HDL Buspro and Iridium Mobile systems using JavaScript. Applied network administration skills and configured satellite tuners. Specialized in smart home automation and building control systems.

Belaruskali

  • Power Engineer
    September 2011–October 2016

Gained experience in industrial operations and solving non-standard situations in real-time. Worked with industrial automation systems including Siemens controllers, WinCC visualization environment, and MiCOM programmable relays. Developed critical problem-solving skills and technical expertise in an industrial mining environment.

Achievements

Master's degree, Electrical and Electronics Engineering

Belaruski Nacyjanal'ny Tehnièny Universitet

Completed Master's degree in Electrical and Electronics Engineering from 2005 to 2011.

REACT MENTORING PROGRAM

EPAM

Participated in EPAM's specialized React mentoring program to enhance frontend development skills and master React framework for building modern, efficient web applications.

Web Application Development Certifications

IT Academy
  • FD2: "Development of web applications using JavaScript" (2017)
  • FD1: "Website development using HTML, CSS and JavaScript" (2016-2017)

Technical Team Lead - React Course Final Project

RS School

Led a team of developers in the RS School React course final project. Managed technical decisions, conducted code reviews, and mentored team members while delivering a fully functional React application.

Hobbies & Interests

Passionate about sports, former member of national middle-distance running team. Interested in smart home technology and automation systems. Enjoy working on technical challenges.