Remote only. CET, with overlap up to US West (until ~22:00 CET). Full-time as a B2B contractor (own company) or via Employer of Record. Contract is OK. Start: 2 weeks from offer. Industries: consumer apps at scale, B2B SaaS, gaming, fintech, data/analytics, developer tools. Not interested: cybersecurity, identity/IAM.
Looking for a job
Kirill Tolmachev
@kirilltolmachev
Senior / Staff Backend Engineer · Distributed systems, high-load (1.9M DAU) · .NET, Kafka, Kubernetes, AWS/Azure · 14+ years
SerbiaWhat I'm looking for
Senior backend engineer with 14+ years building high-load distributed systems and B2B SaaS platforms. Scaled game backends to 2.5M+ daily active users, built event pipelines processing 2M+ events a day, and owned architecture across platform teams. Led a team of 5, mentored 14 engineers, and led production incident response at three companies. Cloud-native on Azure and AWS, with production observability and AI-assisted development.
Experience
Work history, roles, and key accomplishments
CA
Current
Senior Software Engineer
Cayosoft
Aug 2024 - Present (2 years 2 months)
Backend engineer on a B2B enterprise SaaS platform for Active Directory and Microsoft 365 monitoring. Built authorization engine and audit pipeline, cutting p99 latency and full-sync time.
SU
Senior Software Engineer
SuperPlay
Mar 2022 - Aug 2024 (2 years 5 months)
Owned architecture decisions and scaled game backends to 2.5M+ daily active users. Optimized hot paths with Redis caching and built observability with Prometheus and Grafana.
DY
Lead Backend Engineer
Dynata
Jan 2019 - Mar 2022 (3 years 2 months)
Led a team of 5 backend engineers building the REST API for a SaaS data analysis platform. Built synchronization with external data sources and designed processing pipelines for proprietary data formats.
ML
Senior Software Engineer
MarketSight LLC
May 2016 - Jan 2019 (2 years 8 months)
Added REST API support to a monolithic marketing SaaS platform and led refactoring that improved performance by 30%. Designed data processing for new proprietary formats and built frontend modules.
DE
Development Team Lead
DAFE Engineering
Jul 2012 - May 2016 (3 years 10 months)
Led an 8-person team building the backend of a mobile aeronavigation system, resulting in a patent and 2 key contracts. Designed data storage formats that cut processing time by 80%.
Education
Degrees, certifications, and relevant coursework
Moscow Institute of Physics and Technology (MIPT)
Master of Science, Applied Mathematics and Computer Science
2011 - 2017
MSc in Applied Mathematics and Computer Science from Moscow Institute of Physics and Technology (MIPT) from 2011 to 2017.
MI
Microsoft
Microsoft Applied Skills: Deploy cloud-native apps using Azure Container Apps, Cloud Computing
Microsoft Applied Skills certification in deploying cloud-native apps using Azure Container Apps, completed in 2026.
AN
Anthropic
Claude Code in Action, AI-Assisted Development
Anthropic certification in Claude Code in Action, completed in 2026.
Availability
Looking for a job
Location
SerbiaAuthorized to work in
Salary expectations
84k-120k EUR
Social media
Interested in hiring Kirill?
You can contact Kirill and 90k+ other talented remote workers on Himalayas.
Message KirillGet matched with your dream remote job
Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!
