Looking for a job

Roman Sokolov

@romansokolov

Java Backend Engineer who resolved production data loss at Accuris and cut Jusan Bank tax form generation from 5 minutes to 8 seconds.

Belarus

Message

What I'm looking for

I'm looking for remote-first work and am open to relocating. I can provide contractor services through a Georgian sole proprietorship and have 5+ hours of CET overlap.

At Accuris, I resolved a distributed cache inconsistency that caused lost records under concurrent load. I reproduced the issue at 1,200 requests per minute and designed a synchronous cache strategy to eliminate race conditions across production servers.

At Jusan Bank, I reduced tax form generation from five minutes to about eight seconds by bringing calculation logic in-house. I also developed government tax declaration generation and a configurable XML validation library.

At WeSendit® Official, I fixed file rename and move operations that triggered full AWS S3 copies, reducing their latency from 30 seconds to under one second. I also implemented file management features including copy, move, delete, and recursive folder support.

At Andersen Lab, I contributed to internal search and microservices work, configured Keycloak authentication, and conducted more than 30 technical interviews. I have worked across FinTech and enterprise systems, including legacy migrations and backend services.

Experience

Work history, roles, and key accomplishments

Java Backend Engineer

Accuris

Sep 2024 - May 2026 (1 year 8 months)

Platform serving 6,500+ organizations across aerospace, defence, and government sectors

• Drove server-side migration from JBoss 6.1/Java 7 to WildFly 26/Java 8 across 3 Linux servers; containerized application in Docker and configured WildFly cluster, release pipelines, and inter-server communication
• Identified and resolved distributed cache inconsistency across 3 production servers causing lo

Java Software Engineer

Andersen Lab

Feb 2023 - May 2026 (3 years 3 months)

Contract Java Backend Developer placed on client projects across USA, Kazakhstan, and Switzerland. Domains: enterprise document management, FinTech tax automation, and cloud file storage.

Contributed to internal projects: implemented full-text search using Hibernate Search (Apache Lucene), participated in monolith decomposition into microservices, and configured Keycloak authentication.

Conducte

Java Backend Engineer

Jusan Bank

Oct 2023 - Jul 2024 (9 months)

Tax & Accounting Automation Platform

• Reduced tax form generation time from 5 min to ~8 sec by migrating calculation logic from third-party service in-house
• Developed PDF/XML tax declaration generation for government forms with 1,000+ fields across 15-20 pages; proposed PDF template approach using Adobe Acrobat metadata to meet tight deadlines
• Built YAML-configurable XML validator library wi

Java Backend Engineer

WeSendit® Official

Jun 2023 - Sep 2023 (3 months)

Cloud File Sharing Platform

• Identified fundamental architectural flaw causing all file rename/move operations to trigger full AWS S3 copy; proposed and implemented fix by decoupling storage keys from display paths — reduced operation time from 30s to under 1s
• Implemented full file management system: copy, move, delete, soft-delete to trash with configurable retention period and recursive fold