Leonid Svyatov
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Leonid Svyatov

Lead Software Engineer

Lead software engineer with 15+ years in Ruby, Python, TypeScript and Go. Largest contributor to Show-Score across its startup and TodayTix years. Builds AI-powered products and developer tools; owns architecture, delivery and operations. Hires and mentors distributed teams. Based in Yerevan, Armenia; available for remote roles.

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EXPERIENCE

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Jan 2026 - Present · 9 mos

Remote

Independent Software Consultant Lead Software Engineer

As sole platform engineer, I turned a crypto research prototype into a tested, monitored Python trading platform in six weeks, with eToro execution and trading safeguards. I built Ouroboros, a self-improving software delivery system using TypeScript, Bun and Docker, and use it daily with automated tests and independent agent reviews. I also built a Rails marketplace for timber harvesting and a Telegram app for psychologist matching with payments, and launched an Astro website for a machinery repair business.

Aug 2024 - Jul 2025 · 1 yr

Chicago, US · Remote

Halo Senior Software Engineer

I was one of five code owners on a seven-engineer team building an R&D marketplace that connected sponsors with 3,000+ research institutions. I built an OpenAlex scientist-discovery pipeline with automated researcher profiles, OpenAI author disambiguation and Mistral OCR. I also resolved all TypeScript errors in week two, added required CI checks for TypeScript and Sorbet signature drift, and moved analytics queries to a read replica.

Feb 2024 - Aug 2024 · 7 mos

Dubai, UAE · Remote

Ourea Systems Lead Software Engineer

I owned engineering and operations across four product lines and five servers. In three months, I built an AI car-battery callout marketplace with Rails, OpenAI WhatsApp intake, SMS supplier bidding, race-safe booking and retry-safe Twilio webhooks. I also modernized 14 Python scrapers covering about 5,000 policies and built a fund-factsheet API using OpenFIGI, PDF extraction and Llama classification.

Mar 2021 - Jan 2024 · 2 yrs 11 mos

New York, US · Remote

TodayTix Group Tech Lead

As one of two engineers, I relaunched Show-Score in May 2021 after 11 months of pandemic hibernation, with a full redesign and restored services. I built review APIs and TypeScript widgets for TodayTix, LondonTheatre, New York Theatre Guide, partners and native apps within a shared Next.js monorepo. I also removed over 200,000 lines of vendored frontend code and obsolete checkout and view layers, and upgraded Rails from 5.2 to 6.1 while maintaining the live service.

May 2020 - Feb 2021 · 10 mos

Vancouver, Canada · Remote

InputHealth Senior Software Engineer

I built a GitHub branch transition tool using PostgreSQL snapshots to reduce developer setup work when switching branches. I also resolved critical issues in a Rails healthcare platform, improved release workflows and mentored engineers through code reviews and pair programming.

Oct 2015 - Mar 2020 · 4 yrs 6 mos

New York, US · Remote

Show-Score Lead Software Engineer

I led architecture and hired and mentored the Russia-based engineering team. I built ticket checkout with Telecharge and Stripe, followed by Goldstar and London Theatre Direct integrations, and launched paid memberships with prorated billing and ticket credits. After the full-time role ended, I continued maintenance as sole engineer from April 2020 to March 2021 to reduce hosting costs and keep the service available.

Jan 2015 - Jun 2015 · 6 mos

Dubai, UAE · Remote

Ourea Systems Senior Software Engineer

I built Rails APIs for portfolios, investments and policies with role-based access, and automated fund-data collection, portfolio performance calculations and factsheet downloads. I converted MongoDB models to PostgreSQL in two days with model tests passing, and cut test runtime from about 350 to 40 seconds.

2010 - 2014

St Petersburg, Russia

Earlier Experience Full-Stack Engineering

I built Rails logistics software for shipments, pricing, balances and PDF reports. I also built Yii/MySQL chat with scripted opening messages and multiple clients per operator.

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CORE SKILLS

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EDUCATION

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Baltic State Technical University "VOENMEH" named after D.F. Ustinov Bachelor's degree, Missile and Space Systems Technology
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LANGUAGES

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English (fluent) · Russian (native)
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RECOMMENDATIONS

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Tony Crosby

Staff Engineer, TodayTix

Feb 2024 · senior colleague

I had the pleasure of working directly with Leonid over the course of about a year on projects that spanned the TodayTix and Show Score websites. Leonid is a great communicator and excellent tech lead who is able to effectively work with all parts of the business including product, tech, design and other stakeholders and effectively implement complex technical solutions. He's also a quick learner - the TodayTix website codebase is written in Next JS / React JS / TypeScript which is a different tech stack to the Show Score website. In a short period of time Leonid was able to become very effective in this ecosystem and lead the effort to release major features on both websites. I highly recommend Leonid, he would be an asset on any team he joins

Anthony Galvin

VP Engineering, TodayTix Group

Jan 2024 · senior colleague

Leonid is an excellent engineering lead who brings a thoughtful and positive approach to shipping software. He's adept at problem solving, able to help cross-functional teams navigate complex problems - or where appropriate jump in and deliver the solution directly himself.

I've been particularly impressed with Leonid's ability to work on any part of our architecture, from consumer facing features to backend data challenges.

Rhianne Evans

Product Operations, TodayTix Group

Jan 2024 · teammate

I had the pleasure of working closely with Leonid over the past two years, and I can confidently say that he is a stellar developer and an absolute joy to work with.

Leonid possesses a rare combination of technical expertise and exceptional communication skills. His ability to break down complex technical issues into clear, understandable terms for non-technical stakeholders is particularly noteworthy.

What sets Leonid apart is not just his technical know-how, but also his positive and collaborative attitude. He consistently brought a can-do spirit to the team, contributing not only to the success of the projects but also to the overall positive atmosphere within the team. He is always ready to lend a helping hand, share knowledge, collaborate, and go the extra mile.

I wholeheartedly recommend Leonid to any team looking for a talented and personable developer. It was a pleasure working with him, and I'm confident that he will continue to make significant contributions wherever he goes.

Deeksha Gaur

CEO, Show-Score · Executive Director, TDF

Jul 2023 · manager

I have worked with Leonid for close to eight years, and have found him to be an invaluable thought partner. He is a strong and thoughtful developer who produces clean code. He is a great tech lead, helping his colleagues to play to their strengths, prioritizing workflow, teaching and training clearly and with care, and problem solving. He has a can-do attitude, and will always find a way to solve the problem, even if its outside his comfort zone. Whenever I've posed an idea at the conceptual stage, he asks great questions to clarify the problem, proposes viable solutions, explains the work implications clearly, and then builds. As a "non-tech" business lead, I have found Leonid's insights invaluable and I have learned so much through our time working together. Leonid is a star and I feel very lucky to have worked and collaborated with him.

James Campion

CEO and Founder, Ourea Systems

Apr 2020 · manager

It's been a pleasure working together with Leonid. A broadminded Developer - his exceptional work flow, skills, ingenuity and comprehension of change requests made the project a dream. He's a strong communicator, energetic and broad-minded Developer! And a detail oriented team player.

Tom Melcher

CEO, Show-Score

Apr 2020 · manager

Leonid is a world-class software developer who I would happily hire again if the opportunity arose.

His written and spoken English is near-fluent, and he works very well with cross-functional teams. He has all the skill sets you want in a technical lead -- thoughtful architectures, excellent planning, truly full-stack coding skills, strong devops, commitment to high-quality tests and QA, and effective process manager.

Please contact me with any specific questions!

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