Optimized hot paths and caching strategies, rolled out full observability to find bottlenecks, set up on-call and incident management.
Pavel Efimov
Backend Team Lead · Go
I speed up high-load Go services and grow the team that runs them: 10× throughput, MTTR down 3×, juniors reaching mid-level in six months.
Before → after. Every number from production.
Where each project started, and where it stood when I was done.
Introduced post-mortems, lowered error rate, migrated ~40% of the service off the legacy codebase, and shipped 2 critical features in under 4 weeks each.
Optimized PostgreSQL queries and added Redis, set up observability: traces, logs, metrics.
Delivered 3 internal tech talks for a department of 10 engineers and coordinated 5+ cross-functional teams.
Principles that survived production.
This is how I run the system and the team, day to day.
Architecture for change
I optimize what profiling, tracing and load tests prove is slow. Simple solutions and explicit boundaries over premature complexity.
Reliability as a process
On-call rotation, blameless incident reviews and post-mortems. Full tracing coverage, so MTTR drops from ~3 hours to 1 hour.
Growing the team through context
Mentoring, code review and tech talks. I give engineers the 'why' and ownership — juniors grow into mid-level engineers, review time drops.
What I work with every day.
Each group comes with what it delivers in production.
High-load services with predictable latency.
Service contracts that don't break as you scale.
Queries that handle 2× load without a rewrite.
Zero-downtime deploys and fast rollback when something goes wrong.
You see what broke before users complain.
An engineer who knows how to lead people.
Tech lead / team lead, backend engineering, focused on Go platforms. I lead a team of 7 engineers on an advertising platform that drives significant company revenue: designing architecture, building processes, and growing engineers.
I scale services to 10× the throughput, halve memory and error rates, and cut MTTR from ~3 hours to 1 hour through full observability and post-mortems. I debug traces in the morning and run 1:1s in the evening — to me, it's one job.
Hiring a Go team lead?
Open to team-lead and senior backend roles. A short message on Telegram or by email is enough.
I usually reply the same day