Павло

PAVLO BERNYK
Golang Engineer
3+ years experience
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ABOUT
Results-driven Backend Engineer with over 3 years of experience specializing in Go and building reliable, distributed microservice
architectures. Proven track record in designing event-driven systems using Apache Kafka and building efficient data pipelines for
real-time business analytics. Strong hands-on background in PostgreSQL, Redis caching, and advanced observability. Passionate
about writing clean, maintainable code utilizing SOLID principles and DDD, and eager to adopt emerging technologies to deliver
tangible business results.

SKILLS
Programming Languages: Go.
Databases: PostgreSQL, Elasticsearch, MongoDB, Redis.
Cloud and Infrastructure: GCP, GCP BigQuery, Cloud Logging, AWS, Docker, CI/CD, Apache Kafka, Apache Spark, ArgoCD.
Observability and Monitoring: Prometheus, Grafana, OpenTelemetry.
Tools: Git, Swagger/OpenAPI.
Architecture and Principles: Microservices, EDD, DDD, Layered Architecture, SOLID, REST API, gRPC, Protobuf.
Libraries: GORM/sqlc, Gin, Fiber, Gorila Mux, uber-go/fx, uber-go/zap, testify/gomock/mockery.
EXPERIENCE
Kontentino - Golang Engineer : 08.2024 – Present
Marketing Automation & Content Publishing: Worked on the development of a Go-based microservices platform for social media
orchestration. Implemented the logic for cross-platform post coordination, featuring partial-success support and independent
channel lifecycles. Maintained data consistency between PostgreSQL and Kafka using an outbox approach.
External API Integrations: Worked on adapter-based integrations with social platforms. Handled multi-tier rate limits using Redis
counters, distributed locks for token refreshes, and resilience mechanisms for unstable APIs. Implemented protection against
duplication using idempotency keys and reconciliation jobs.
AI Creative Validation: Built Go wrappers for AI creative validation, developing a server-side verification schema and custom
retry flows to handle unreliable LLM responses.
Real-time Analytics: Was involved in building a custom pipeline for streaming product events and metrics into AWS Redshift to
offload the primary database. Optimized storage schemas and configured data loading processes.
CI/CD & Infrastructure: Maintained continuous deployment processes through ArgoCD using a GitOps approach. Worked with
official Redis images in private repositories and optimized multi-stage Docker builds.
Tech stack: Golang, gRPC, PostgreSQL, AWS Redshift, Apache Kafka, ArgoCD, Prometheus, Grafana, Redis, AWS
CloudWatch.
Reservio - Golang Engineer : 03.2023 – 08.2024
Backend and APIs: Developed Go microservices for scheduling and user management. Built RESTful API gateway and
implemented gRPC/Protobuf for low-latency internal communication.
Search and Caching: Integrated Elasticsearch to provide fast, full-text search capabilities for services and business profiles.
Utilized Redis to manage high traffic during peak hours and store dynamic business rules.
Real-time Data Engineering: Designed advanced data pipelines using Apache Kafka and Spark Streaming for real-time event
enrichment. Implemented stateful processing to transform raw data into actionable insights, storing processed data in GCP
BigQuery and significantly offloading analytical load from the primary PostgreSQL database.
Created multi-stage Docker builds to minimize image sizes and supported automated CI/CD pipelines for secure deployments to
GCP.
Tech stack: Golang, gRPC, Protobuf, REST API, PostgreSQL, Elasticsearch, Apache Spark, Apache Kafka, Redis, Docker,
CI/CD, Swagger, GCP, GCP BigQuery.
INTERNSHIP
Institute of Innovative Education of KNUCA - Full Stack Developer (Part-time): 11/2021 – 02/2023
End-to-End Development: Designed and built educational and scientific portals from scratch in collaboration with international
grant programs, handling both frontend architecture and backend logic using Node.js.
API Design and Database Architecture: Developed robust RESTful APIs and designed NoSQL database schemas in MongoDB to
efficiently manage user data, course materials, and administrative records.
Tech stack: JavaScript, Node.js, MongoDB, HTML, CSS, Figma.
EDUCATION
Master’s degree Software Engineering - 2025-2027 Kyiv National University of Construction and Architecture
Bachelor’s degree Computer Science - 2021-2025 Kyiv National University of Construction and Architecture
LANGUAGES
English – B2 Ukrainian - C1 Russian - C1