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Nikita User

@nikitaglaktionov

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Senior backend engineer building scalable distributed systems and microservices from concept to production.

Serbia

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What I'm looking for

I’m looking for backend work where I can design production systems end to end—routing, APIs, integrations, and data pipelines—across distributed services and scalable platforms.

I’ve spent the last 8+ years building distributed systems and backend platforms from concept to production, with work spanning microservices, monoliths, REST/gRPC APIs, and integrations with third-party systems.

At XMAR, I designed a routing engine based on the A* algorithm, owned maritime reference datasets, and built an AIS-based event detection platform. I also led integrations with Microsoft Business Central and implemented a large-scale AI-driven document processing pipeline across about 1 TB of archived email data.

Earlier, at INVEST SHIPPING, I led fleet and financial calculation modules and built routing for voyage planning, including FIFO/LIFO fuel consumption and a NoSQL versioning strategy for fixtures and operational reference data. Before that, at SOTBI, I supported a bankruptcy management platform (including migration from MySQL to PostgreSQL) and built a lawyer performance evaluation module; at CLICKADILLA, I developed an internal advertising profitability platform and tools for website analysis and keyword detection.

Experience

Work history, roles, and key accomplishments

Senior Backend Engineer

XMAR

Sep 2022 - Jun 2026 (3 years 9 months)

Spearheaded design and implementation of a routing engine based on A* algorithm for maritime ERP SaaS. Delivered platform capabilities supporting processing of over 16,000 fixtures and hundreds of thousands of route calculations.

Go PostgreSQL Kafka Docker Microsoft Business Central Claude Code Cursor

Backend Engineer

Sotbi

Oct 2020 - Oct 2022 (2 years)

Designed architecture and contributed to development of a lawyer performance evaluation module for an internal enterprise system. Maintained and enhanced an existing bankruptcy management platform, delivering new features and resolving production issues.

PostgreSQL MySQL SQL Docker

Senior Backend Engineer

Invest Shipping

Feb 2020 - Sep 2022 (2 years 7 months)

Led design and implementation of business-critical calculation modules within a maritime ERP platform for fleet operations and financial planning. Architected a routing engine for voyage planning based on vessel characteristics and operational constraints.

Go PostgreSQL MongoDB NoSQL FIFO Docker

Backend Engineer

Clickadilla

Jul 2019 - Jun 2020 (11 months)

Developed internal advertising profitability analysis platform for a digital advertising company. Implemented application components including backend and frontend functionality, as well as MySQL database integration.

MySQL Docker