San Francisco, CA UTC−8
Portrait of Dmitrii Filippov

Dmitrii Filippov

Engineering Manager & Staff Engineer — AI‑First Platform at CodeSignal

Experience
10+ years
Peak scale
1.5B req/day
Team led
6 AI engineers
ICPC NEERC
Silver medal

01About

Engineering manager and staff engineer with over a decade of experience architecting high-load distributed systems — serving 1.5 billion+ daily requests — and pioneering AI-driven product pipelines. Proven track record of scaling global infrastructure, cutting cloud costs by 40%+, and leading teams that ship autonomous AI agent workflows.

02Experience

  1. 2023 — now

    Engineering Manager & Staff Engineer · CodeSignal, San Francisco

    Leading 6 AI engineers building the autonomous content-generation platform behind 1,500+ courses and 1,000+ hiring assessments a year; designed its MVP solo and architected a workflow language that turns non-deterministic LLM operations into reliable pipelines.

    • AWS
    • Node.js
    • React
    • Vercel AI SDK
    • MongoDB
    • Vector search
  2. 2021 — 2023

    Senior Software Engineer · Sumsub, remote

    Decoupled a legacy monolith into microservices, cutting infrastructure costs by 40%; migrated 100M+ records to OpenSearch with zero downtime and built a distributed rate-limiting engine for traffic spikes.

    • Java
    • Kafka
    • MongoDB
    • OpenSearch
    • Airflow
  3. 2019 — 2021

    Senior Software Engineer, High Load · VK (Mail.ru Group)

    Re-architected the video streaming engine of a platform serving 1.5B daily views, 5,000+ simultaneous live streams, and 10+ PB of storage.

    • Java
    • Spring
    • Cassandra
    • ClickHouse
  4. 2018 — 2019

    Senior Software Engineer · Huawei R&D Labs

    Built the core inference engine and a low-latency, fault-tolerant text-to-speech microservice for a proprietary mobile voice assistant.

    • Java
    • Kotlin
    • Spring Boot
    • Kafka
  5. 2017 — 2018

    Software Engineer · Jetlore (acquired by PayPal)

    Built backend APIs and high-velocity data pipelines for an ML prediction platform used by top-tier global retailers.

    • Scala
    • Akka
    • Spark
    • Cassandra
    • AWS
  6. 2015 — 2018

    Content Engineering Manager · CodeSignal, remote

    Promoted from engineer to manager; led a team of 4 authoring algorithmic challenges for global monthly coding championships.

03Skills

Languages
Java · Kotlin · TypeScript · Python
AI
LLM agents (Claude Code, Codex) · Vercel AI SDK · RAG · vector search
Systems
Microservices · event-driven architecture · high-load · distributed caching
Infrastructure
AWS · Docker · Kafka · Redis · Airflow

04Education

  1. 2013 — 2019

    M.Sc. Applied Mathematics & Computer Science · ITMO University

    St. Petersburg — the university with a record seven ACM ICPC world championships.

05Awards

  1. 2014

    Silver Medal — ACM ICPC · NEERC semifinals — standings

    The world's most prestigious collegiate algorithmic programming championship.

  2. 2012 · 2013

    Prize Winner — All-Russian Olympiad in Informatics