Contributor
bloXroute-Labs/relayproxy ↗
High-performance relay proxy for Ethereum validators and block builders.
About me
Bhakiyaraj Kalimuthu
Senior Software Engineer
I am an engineer based in Stockholm and a dad of two boys. I admire Leonhard Euler's gift for finding simple connections inside difficult problems. This journal is where I share useful lessons from engineering work, technical experiments and topics I am learning.
Distributed systems · Go · Rust · Infrastructure
Skills
Languages, systems and tools I use to build production software.
Programming
- Golang
- Rust
- Java
- Python
- Node.js
- Scala
- C
- Ruby
- Bash
Systems & architecture
- Distributed systems
- Low-latency systems
- Microservices
- REST
- gRPC
- WebSockets
Cloud & infrastructure
- Docker
- Kubernetes
- Google Cloud
- AWS
- Azure AKS
Data & messaging
- PostgreSQL
- MySQL
- Redis
- MongoDB
- Kafka
- RabbitMQ
- ZooKeeper
Blockchain systems
- Ethereum
- MEV
- PBS
- MEV-Boost
- go-ethereum
- BSC
- Commit-Boost
- RETH
- Lighthouse
- Prysm
Delivery & tooling
- Git
- Jenkins
- Argo CD
- Spinnaker
Open source
Public engineering work grouped by its primary language.
Golang
4 repositoriesContributor
flashbots/mev-boost ↗
Open-source middleware connecting Ethereum validators to competitive block-building relays.
Contributor
flashbots/builder ↗
Historic geth-based Flashbots block builder with MEV-aware block ordering.
Contributor
flashbots/rpc-endpoint ↗
Flashbots Protect RPC endpoint for private transaction routing.
Rust
2 repositoriesContributor
bloXroute-Labs/el-reward-calculator ↗
Tool for calculating and analysing Ethereum execution-layer validator rewards.
Contributor
Commit-Boost/commit-boost-client ↗
Modular Ethereum validator sidecar for MEV-Boost and commitment protocols.
Experience
Work history
18+ years in software engineering
May 2023 – Present
Senior Software Engineer
bloXroute Labs
- Led development of Ethereum Validator Gateway components.
- Built Ethereum relay and block-builder infrastructure.
- Designed PBS architecture on Binance Smart Chain from the ground up.
- Collaborated directly with validators on integration and operations.
Dec 2021 – Jun 2023
Software Engineer
Flashbots
- Built auction services and worked on Go-Ethereum internals.
- Led engineering work on Flashbots Protect and Bundle Relay.
- Contributed to the block builder and MEV-Boost Relay.
- Worked with researchers to reduce negative MEV externalities.
Oct 2021 – Dec 2021
Senior Cloud Software Engineer
ArangoDB
- Delivered a managed cloud platform for ArangoDB graph databases.
- Built high-performance distributed microservices in Go.
- Deployed containerised services across AWS, GCP and Azure.
Oct 2019 – Oct 2021
Senior Backend Engineer
Voi
- Built Go microservices on GCP for an e-scooter and e-bike platform.
- Led the core ride-experience project from design to production.
- Integrated the platform with multiple vehicle partners.
Nov 2016 – Oct 2019
Software Engineer (Java)
Kindred
- Expanded the platform to support 25+ providers and 500+ games.
- Architected Bingo and Casino tournament tooling.
- Built REST services for third-party gaming integrations.
Oct 2014 – Oct 2016
Lead Engineer
BlueJeans Network
Senior Engineer · Lead Engineer
- Designed the API backend for BlueJeans PrimeTime with Spring Boot.
- Built real-time chat using Node.js and WebSockets.
- Led performance and resiliency engineering, including load and chaos testing.
Sep 2013 – Oct 2014
System Engineer
Nokia
- Developed the core LDAP directory server for Nokia One-NDS.
- Supported real-time subscriber data across 2G, 3G and LTE networks.
May 2008 – Dec 2013
Senior Software Engineer
Huawei
Associate Software Engineer · Software Engineer · Senior Software Engineer
- Built firmware communication tools and test suites for CDMA and LTE devices.
- Developed AT-command executors, Wi-Fi hotspot tools and firmware installers.