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Roman Sytkiv

@romansytkiv

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Software Engineer and Technical Lead at Noble.codes; built a real-time moderation portal that cut review time by 40%.

Ukraine

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At Noble.codes, I own architecture and delivery, including a real-time moderation portal on WebSockets that cut review time by 40%. I also added Redis singleflight caching for ftw.riotgames.com under high load and connected six social platform APIs behind one normalized data model.

I built Poryv, a Telegram Mini App for fitness trainers, solo—from client and progress features to bot reminders and payments—and it’s live with its first trainers. At JustAnswer, I worked on conversion A/B tests that increased subscriptions by 7%, added Apple Pay, Google Pay and PayPal to checkout, and moved more than 30 legacy screens to React.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer · Technical Lead

Current

Noble.codes

May 2025 - Present (1 year 6 months)

Owned architecture and delivery using Next.js, NestJS, PostgreSQL, and Redis. Built a real-time moderation portal on WebSockets that reduced review time by 40%.

Next.js NestJS PostgreSQL Redis WebSockets Single Flight API Integration

Current

Fullstack Developer

Current

PharmaLIMS/ELN

May 2025 - Present (1 year 6 months)

Developed a 6-service complex under 21 CFR Part 11 using React and ASP.NET. Implemented AWS SQS/Lambda, Terraform, audit trail, and e-signatures.

React ASP.NET AWS SQS AWS Lambda Terraform Audit Trails eSignatures

Software Engineer

JustAnswer

Feb 2024 - May 2025 (1 year 3 months)

Ran A/B tests on conversion flows that increased subscriptions by 7%. Integrated Apple Pay, Google Pay, and PayPal into checkout and migrated 30+ legacy screens to React with Jest and Playwright coverage.

A B Testing React Jest Playwright Apple Pay Google Pay PayPal Machine Translation

Frontend Developer

EPAM Systems

Sep 2021 - Feb 2024 (2 years 5 months)

Worked on Photobox, a UK e-commerce platform, focusing on anti-fraud measures including Adyen and Klarna risk scoring, velocity limits, and blocklists. Set up fraud alerts on AWS Lambda to PagerDuty and investigated chargeback and promo-code abuse.

Adyen Klarna Risk Scoring AWS Lambda PagerDuty Chargebacks Coupons Ecommerce

Founder

zeromrr.club

Created a streetwear brand for indie builders, handling product, design, development, and growth solo. Ran paid X ads with A/B-tested landing pages and managed pre-orders via Stripe.