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Denis Ushakov

@denisushakov

Senior Backend Developer at Syrve, where I improved PostgreSQL performance and delivered self-service license management for a restaurant SaaS platform.

Georgia

Message

What I'm looking for

I'm open to remote roles in EU time zones and relocation within the EU.

At Syrve, I worked on the partner portal and internal CRM for a restaurant-management SaaS platform. I delivered self-service license management and optimized PostgreSQL queries to improve response times and reduce database load.

Previously at Petshop.ru, I extracted billing from a monolithic Symfony application into a standalone service using DDD, CQRS, and RabbitMQ. I also reworked order processing and delivered mobile catalog and cart APIs; across my roles, I've worked on inherited systems, service integrations, and production reliability.

Experience

Work history, roles, and key accomplishments

Senior Backend developer

Syrve

Mar 2024 - Aug 2026 (2 years 5 months)

Worked on the partner portal and internal CRM of a restaurant-management SaaS platform used by 10,000+ restaurants across 50+ countries.

• Delivered partner-portal features on a SaaS platform, including self-service license management that reduced manual license handling for the partner team.
• Investigated and resolved production incidents in data-sync workflows using Graylog and Sentry, includi

Backend PHP Developer

Petshop.ru

Aug 2020 - Jan 2024 (3 years 5 months)

Backend development for a large e-commerce platform with complex catalog, checkout, billing and mobile-integration workflows.

• Extracted the billing domain from a monolithic Symfony application into a standalone service using DDD and CQRS principles, with its own persistence model and API/RabbitMQ-based integrations.
• Reworked legacy order processing into a service layer using characterization

Backend PHP Developer

Noveo Group

Nov 2018 - Jul 2020 (1 year 8 months)

Software development outsourcing company delivering web applications for EU clients. Worked directly with EU stakeholders across multiple projects.

• Delivered backend features end-to-end across multiple Laravel and Symfony client projects, from requirements clarification with EU stakeholders to production release, adapting to different domains and codebases.
• Designed and built third-party REST

Web PHP Developer

Adnow.com

Dec 2016 - Jul 2018 (1 year 7 months)

International native advertising network (adtech).

• Developed backend services for a native advertising network handling multi-million daily impressions, including ad-serving logic, statistics aggregation and publisher reporting (PHP, MySQL, Redis).
• Built an internal CRM that automated campaign and publisher management, replacing manual spreadsheet workflows for the sales team.