Nikola Živković

@nikolaivkovi

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I am a backend developer specializing in Go, REST APIs, microservices, and reliable production deployments.

Serbia

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What I'm looking for

I seek a backend role building scalable microservices, improving deployment and monitoring, working in Agile teams, and advancing expertise in Go, distributed systems, and production reliability.

I am a backend developer focused on Go, building and maintaining REST APIs and improving deployment processes. I enjoy implementing features from scratch and driving them to production.

At DelSystems I implemented OAuth2, built import/export for large datasets (JSON, CSV, XLSX), and worked with MariaDB and ClickHouse for large-scale data operations. I contributed to monitoring and debugging, helping maintain an uptime above 98.4%.

I follow TDD and use Postman for API testing, and I regularly refactor code to keep the codebase clean and secure, applying web security best practices and data validation. I work in Agile/Scrum environments and value clear communication and team collaboration.

I am exploring microservices architecture, Go concurrency (Goroutines & Channels), and distributed systems to build scalable backends. I am eager to grow into roles that align deployment processes with resilient, observable systems.

Experience

Work history, roles, and key accomplishments

Current

Golang Backend Developer

Current

DelSystems

Jan 2022 - Present (3 years 8 months)

Implemented OAuth2 authentication and built REST APIs and large-scale import/export features, contributing to a production uptime above 98.4%. Led data operations with MariaDB and ClickHouse and improved monitoring and deployment issue resolution.

Go Gin OAUTH2 REST APIs MariaDB Clickhouse TDD Postman)

Backend Developer Intern

DelSystems

Completed an intensive backend internship building REST services and a mock BambooHR-like backend using Go and MariaDB, demonstrating the fastest growth among trainees. Gained practical experience in version control, debugging, and API testing.

Go MariaDB REST JSON Version Control Debugging Postman)TDD

Education

Degrees, certifications, and relevant coursework

FTN ČAČAK - COMPUTER SCIENCE

Computer Science

2017 -

Activities and societies: Relevant coursework: Object Oriented Programming, Databases, Operating Systems, REST, Docker, Computer Architecture, Postman, Git / Version Control, Bash, Agile & Scrum Methodologies.

Pursuing Computer Science studies with coursework in programming, databases, operating systems, REST, Docker, and agile methodologies (2017–present).