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🧬 functional · type-level · high-performance

ifkbhit
Senior Scala Engineer

Crafting resilient, purely functional systems with Cats Effect, ZIO, and beyond. 10+ years of deep JVM expertise — from low-latency trading to distributed data pipelines.
$> scala --version Scala 3.4 + 2.13
📄 Explore portfolio
💬 Let’s build together
toolkit & core mastery
Scala 3 / 2.13
Cats Effect / ZIO
http4s / Tapir
Doobie / Skunk
FS2 / Zio-streams
Akka / Pekko
Spark / Flink
Kafka / Pulsar
Tapir + OpenAPI
Refined / Newtype
sbt / Mill / Bazel
Kubernetes / Nomad
🧠 type-driven design ⚡ effect isolation 📈 high-throughput systems
impact & engineering leadership

Principal Scala Engineer · Quantium Data

2021 — present · remote / EU
Led migration of legacy monolith to event-driven microservices with FS2 & Kafka. Designed typed, resilient streaming pipelines processing 2M+ events/sec. Mentored 8 junior/mid engineers, introduced effectful best practices and property-based testing.

Senior Backend Architect · FinTech Lambda

2018 — 2021 · London (hybrid)
Built ZIO-based order matching engine with sub-millisecond latency. Implemented zero-downtime deployments, observability stack (Prometheus + Grafana), reduced infrastructure costs by 30% via efficient resource scheduling.

Scala Consultant · Adyen / Deliveroo (contract)

2015 — 2018 · Amsterdam / London
Delivered high-scale payment gateways with http4s + Doobie. Optimized DB query plans, introduced Circe codecs for API contracts and OpenAPI documentation. Led knowledge sharing workshops on Tagless Final.
featured OSS & systems
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Zio-Cachet
ZIO · Redis · Caffeine
Declarative, composable caching layer with predictive invalidation. Used by 3+ production systems handling >5k rps.
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Pekko-Pulsar Connector
Apache Pekko · Pulsar · Scala 3
Reactive stream connector with exactly-once semantics & backpressure. Contributed back to Apache community.
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ifk-macros
Scala 3 macros · Typeclass derivation
Boilerplate-free smart constructors & automatic refined types derivation. 180+ stars on GitHub.
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hyper-routes
Tapir · Cats Effect · OTEL
Type-safe, OpenTelemetry-instrumented HTTP4S wrapper with declarative middlewares, used internally at high-load startup.

“Making illegal states unrepresentable is not just a phrase — it's how we build durable, fearless systems. I believe in pure FP as a competitive advantage, not an academic exercise.”

— ifkbhit, on pragmatic functional programming

✨ collaborate with ifkbhit

Senior Scala contract, full-time, or architect advisory — let's build systems that last.

📡 @ifkbhit
⚡ telegram — предпочтительный способ связи
PGP fingerprint: 3B5A 1F2C 8D4E 99AA 7C22 1EBF 4D91 B7C0 9AFE 337F