I've spent my career building systems that scale — sometimes even as planned. At Careem (Uber Inc.), I led the architecture for Data & AI, building platforms for machine learning, experimentation, and event processing that supported operations at scale. Before that, I served as Head of Data Science at AirAsia, where I worked to make data-driven decisions more accessible across the organization. At Grab, Southeast Asia's superapp, I worked on experimentation platforms and was the architect for transport and driver experience, helping millions of rides happen more efficiently. My Ph.D. from Trinity College Dublin & IBM Research focused on debugging parallel systems and visualizing performance problems — a mix of computer science and psychology that taught me patience (and the limits of it). Earlier in my career, I worked on everything from autonomous helicopters to particle simulators, building systems that were occasionally more reliable than their creators.

🚀Distributed Systems I have designed and open-sourced

• emitter-io/emitter - high performance, distributed and low latency publish-subscribe platform
• kelindar/talaria - distributed, highly available, and low latency time-series database for Presto

📦Golang Libraries I made to help me in building software faster or explore a certain idea

• kelindar/async - concurrency patterns library using promises for Go
• kelindar/approx - probabilistic data structures (e.g. morris counting, count-min sketch, topk) in Go
• kelindar/bench - library for simple yet comprehensive micro-benchmarking in Go
• kelindar/binary - generic and fast binary serializer for Go
• kelindar/bitmap - zero-allocation dense bitmap index for Go
• kelindar/column - columnar in-memory db (structures-of-arrays) with querying and indexing in Go
• kelindar/folio - automatically create web-based CMS based on Go structs
• kelindar/goap - goal oriented action planning library in Go
• kelindar/intmap - fast uint32-to-uint32 hash map, about 20-50% faster than Go map
• kelindar/tile - 2D grid engine, built with data and cache friendly ways, includes pathfinding and observers
• kelindar/timeline - Scheduler of events for near real-time systems in Go
• kelindar/evolve - Go implementation of a binary genetic algorithm with random binary crossover & mutation
• kelindar/loader - Go library that allows for downloading things from a URL (http, s3, ...)
• kelindar/ecs - high-performance entity component system in pure Go
• kelindar/event - simple internal event bus for Go applications
• kelindar/lua - wrapper around LUA script executor for long-running scripts
• kelindar/tales - multi-actor event logging in S3 in Go
• kelindar/tcp - simple TCP server in Go
• kelindar/process - Go library for process usage retrieval
• kelindar/roaring - Implementation of roaring bitmaps, backed by dense SIMD containers
• kelindar/search - Go library for embedded vector search and semantic embeddings with llama.cpp
• kelindar/s3 - Slim AWS S3 client library for Go that implements the standard fs.FS interface
• kelindar/simd - auto-vectorized SIMD math functions for Go
• kelindar/smutex - simple sharded mutual exclusion in Go
• kelindar/xxrand - XXH3-Based Pseudorandom Number Generator
• kelindar/iostream - Simple binary reader and writer for io.Reader/io.Writer streams
• kelindar/simplex - simplex noise in Go
• kelindar/ultima-sdk - modern, idiomatic Go SDK for reading Ultima Online client files (MUL/UOP)
• emitter-io/address - library providing a set of utilities for dealing with network addressing
• emitter-io/stats - high-performance library for stats and metric aggregation
• emitter-io/config - library for hierarchical config management

🧪Experiments in which I tried with various ideas

• kelindar/bert - wrapper for bert.cpp library in Go, using dynamic linking
• kelindar/gocc - tool to transpile C to Go assembly using clang & objdump
• kelindar/hashbench - benchmarking various hash functions in Go
• kelindar/etop - command-line utility for emitter.io cluster status
• kelindar/spiral - procedurally generating a spiral galaxy in Go
• kelindar/markov - experimenting with markov-chain procgen in Go
• kelindar/pmml2lua - trying to convert PMML decision trees into LUA code
• kelindar/spike-box - what if we can data-bind js/DOM transparently over the network?
• kelindar/misakai-baker - static site generator for C# / .Net people
• manycore/dashboard - profiling your parallelized app by categorizing issues and visually browsing them
• manycore/matmul - matrix multiplication benchmark suite for parallel performance measurement
• manycore/harvester - operating system and hardware performance counter collector utility

🎨Emitter Demos I have prepared for the project

• chat - building a chat with emitter
• actor - distributed actor model with emitter
• client-server - how to create a client/server application with emitter
• platformer - making an online platformer with emitter
• retain - how to use message retention in emitter
• share - how to use shared subscriptions in emitter
• iss - tracking international space station in real-time
• presence - demo of the channel presence for emitter

📚Blogs & Papers I have written in the past

• Technical Blog - My random blog posts around experimentation, performance and open source
• Ph.D Thesis - Supporting visual diagnosis of performance problems in multi-core and parallel software
• SIGCHI'14 Paper - Design considerations for parallel performance tools
• IEEE Journal Paper - Parallel Performance Problems on Shared-Memory Multicore Systems: Taxonomy and Observation

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1. emitter-io/emitteremitter-io/emitterPublic

   High performance, distributed and low latency publish-subscribe platform.

   Go 4k 355

2. columncolumnPublic

   High-performance, columnar, in-memory store with bitmap indexing in Go

   Go 1.5k 63

3. searchsearchPublic

   Go library for embedded vector search and semantic embeddings using llama.cpp

   Go 468 18

4. eventeventPublic

   Simple internal event bus for Go applications

   Go 509 5

5. bitmapbitmapPublic

   Simple dense bitmap index in Go with binary operators

   Assembly 341 25

6. talariadb/talariatalariadb/talariaPublic

   TalariaDB is a distributed, highly available, and low latency time-series database for Presto

   Go 225 31