Михайло

Shestopalka Mykhailo Andriyovych
Uzhhorod, Zakarpattia region​
Phone: [відкрити контакти](див. вище в блоці «контактна інформація»)​
Email: [відкрити контакти](див. вище в блоці «контактна інформація»)​
Telegram: @shes_topalkka

Backend Developer

About Me
I am a motivated and detail-oriented Backend Engineer with three years of commercial experience building
scalable, secure, and user-centric backend systems. I’ve worked in fast-paced product teams, contributing to
architecture decisions, delivering production-ready features, and optimizing systems for performance and
maintainability.
I enjoy solving complex engineering challenges, improving existing infrastructures, and exploring new
technologies that help bring more value to the business. I follow clean architecture principles, write predictable
and maintainable code, and communicate clearly with product, frontend, and cross-functional teams.
I have experience building end-to-end backend services, integrating third-party APIs, optimizing database
queries, implementing real-time functionality, and developing features that directly impact business metrics and
user experience.​
Driven by curiosity, I constantly deepen my knowledge in system design, distributed systems, and scalable
backend patterns.

Core Skills

●​ System Design (modular monolith, microservices, event-driven architecture)
●​ API Design (REST, GraphQL, gRPC), versioning & documentation (OpenAPI/Swagger)
●​ Performance optimization, caching strategies, rate limiting
●​ SQL query optimization, schema design, indexing
●​ Real-time communication (WebSockets, pub/sub)
●​ CI/CD pipelines, automated build & deployment workflows
●​ Logging, monitoring, observability, error reporting
●​ Writing internal documentation, technical specifications, and code review best practices

Technologies
Languages: JavaScript (ES6+), TypeScript, SQL​
Backend: Node.js, Express, NestJS, gRPC, WebSocket, GraphQL, REST API​
Databases: PostgreSQL, MySQL, MongoDB, Redis​
ORM: TypeORM, Prisma, Sequelize​
Messaging: RabbitMQ​
Auth & Security: JWT, OAuth2, bcrypt, Passport.js​
DevOps: AWS (S3, EC2, ECS, CloudWatch), GitHub Actions, Docker, Git​
Tools & Practices: Microservices, SOLID, event-driven systems, testing (Jest), Agile/Scrum​
Other: Real-time geolocation processing, background workers, caching layers, load balancing basics
HaventSoft
Professional Experience (02.9.2023 - 20.05.2024)
HDClinics — Healthcare Telemedicine Platform

Backend Developer

●​ Built and maintained backend architecture for a multi-clinic telemedicine platform specializing in legal
medical cannabis prescriptions in the U.S.
●​ Implemented secure video consultations between doctors and patients using Agora Video SDK.
●​ Integrated Evergreen payment system for medical appointment payments and subscription billing.
●​ Connected AWS S3 for storing patient medical forms, doctor licenses, and visit documentation
(state-based folder separation).
●​ Developed APIs for patient records, doctor workflows, visit notes, and medical approval steps.
●​ Used JWT authentication, RBAC, encrypted storage, and strict access rules to support HIPAA-aligned
workflows.

Key Achievement: Delivered a production-ready backend enabling secure video consultations and compliant
medical data management across multiple clinics.

Insiders
Real-Time Geolocation Social Platform (15.06.2024 - 24.12.2024)

Backend Developer

●​ Built core backend functionality for a real-time social discovery app with proximity matching.
●​ Developed user profiles (name, age, photos), live location updates, and proximity matching (≤2 km).
●​ Implemented a real-time interaction system where users can broadcast messages (e.g., “Who’s up for
coffee?”) to nearby people.
●​ Added mutual confirmation logic for establishing connections only after both users approve.
●​ Used NestJS, Redis, WebSockets, and PostgreSQL to support thousands of concurrent sessions.

Key Achievement: Designed a highly responsive, low-latency backend supporting real-time connections and
scalable geolocation processing.

Near Wave
Shopify Shipping Integration App (Nova Poshta & Multi-Carrier, 10.01.2025 - Until
now )
Backend Developer

●​ Developed backend services for a Shopify embedded app (Remix frontend) integrating Nova Poshta and multiple
carriers.
●​ Built APIs for creating shipping labels, retrieving tracking statuses, and managing merchant shipping settings.
●​ Implemented location search endpoints (cities, streets, warehouses, sender addresses) for merchant checkout
workflows.
●​ Used Redis caching and background job workers to stabilize communication with external carrier APIs.
●​ Designed data models for merchants, shipment records, orders, and carrier configs.
Key Achievement: Created a reliable logistics backend enabling Shopify merchants to automate shipping flows
directly inside their store.