About
Denis Kasatkin
Senior Software Engineer
APIs · Integrations · Automation
I design and build backend systems, APIs and integrations that run in production for years, not just in a demo. I've also led engineering teams, and bring AI automation into the mix where it genuinely saves time. Currently based in Warsaw, Poland.
My Approach
From backend developer to technical lead
I started as a backend developer and gradually moved towards technical leadership, architecture and product.
Today I work at the intersection of engineering, infrastructure and AI, building systems, shaping technical direction and helping engineers grow.
I like simple architectures, measurable results, and software that survives contact with production.
Experience
- Apr 2023 – Present (3 years 6 months)
Vidalytics
Back End Developer
Building and maintaining a high-throughput video analytics platform. Webhook and third-party integrations, background job processing, cloud infrastructure.
PHP · Laminas / ZF2 · Doctrine · MySQL · GCP · Pub/Sub · AI
- Jun 2020 – Jun 2023 (3 years 1 month)
XOVI GmbH
Back End Engineer
Backend services and data pipelines for an SEO and marketing analytics platform.
PHP · Symfony · MySQL
- Feb 2017 – Sep 2018 (1 year 8 months)
AGIMA
Senior PHP Programmer / TeamLead
Team leadership, architecture, development of high-traffic systems.
PHP · Symfony · MySQL · Redis
- Jun 2014 – Feb 2017 (2 years 9 months)
Bmedia Group
Tech Lead
Leading engineering team, building and maintaining web platforms.
PHP · MySQL · JavaScript
Full work history (8 roles) is in the résumé above.
Have a backend, integration or automation problem?
Let's talk about what you're building — I'll tell you honestly if I'm the right fit.