Hi, I'm Dimuthu
Senior Platform Engineer
I architect distributed systems & AI infrastructure
that scale to millions.
7+ years building cloud-native microservices on Kubernetes, real-time streaming pipelines, and LLM-powered workflows across GCP & AWS.
About
Building systems that scale to millions
I'm Dimuthu Wickramanayake, a Senior Platform Engineer with 7+ years of experience architecting distributed systems, high-throughput API platforms, and production AI infrastructure across AWS and GCP. I build cloud-native microservices on Kubernetes sustaining thousands of requests per second, real-time data streaming pipelines at petabyte scale, and LLM-powered application workflows. I'm an active open-source contributor — my published libraries include Limbiq (an adaptive AI memory system on PyPI), PII Guard (a Rust privacy proxy for LLMs), and Living LLM (a self-improving local AI system with persistent memory and knowledge graphs). Beyond engineering, I share knowledge through technical writing on Medium.
7+
Years Experience
8+
Open Source Projects
3
Published Libraries
GCP & AWS
Cloud Platforms
What I Do
Expertise & services
Platform & Backend Engineering
High-throughput distributed microservices on Kubernetes with production API platforms, rate limiting, OAuth, and multi-tenant isolation.
AI/ML Infrastructure
LLM-powered workflows, inference pipelines, adaptive memory systems, LoRA fine-tuning, and privacy-preserving AI architecture.
Cloud & Data Architecture
Cloud-native on GCP & AWS with real-time streaming (Pub/Sub, Kafka, Kinesis), CDC with Debezium, and IaC with Terraform.
System Design Consultation
Scalable, resilient distributed architectures specializing in high-concurrency, fault tolerance, and event-driven patterns.
Live
Apps in production
Kithly
kithly.app
A modern web application for streamlined digital experiences.
VisitZylobin
zylobin.com
A platform for smart, efficient online solutions.
VisitCard Promotions
cardpromotions.org
Find the best credit card promotions and deals in one place.
VisitDrawPro
drawpro.kithly.app
E2E encrypted collaborative drawing with zero-knowledge architecture and real-time sync.
VisitWork
Open source & projects
Limbiq
Published on PyPI. LLM-agnostic middleware with neurotransmitter-inspired adaptive memory, semantic search, and knowledge graph extraction.
View project
Living LLM
Self-improving local AI on Apple Silicon with persistent memory, knowledge graphs, LoRA fine-tuning, and 13-tool ReAct orchestration.
View project
PII Guard
High-performance Rust proxy intercepting LLM API requests, detecting and redacting PII with in-memory vault for re-identification.
View project
DrawPro
E2E encrypted collaborative drawing with zero-knowledge architecture, Yjs CRDT, Redis Pub/Sub, and X25519 ECDH + AES-256-GCM.
View project
CSV-to-PubSub Dataflow
GCP Dataflow Flex Template reading CSVs from GCS and publishing JSON to Pub/Sub for real-time downstream processing.
View project
Express-CLI
CLI tool on npm for scaffolding Express.js projects with PostgreSQL, Joi validation, and extensible service integrations.
View project
VOD Platform
Netflix-like VOD solution using AWS media transcoding, CDN distribution, and streaming infrastructure.
View project
WasteGo
AI-powered mobile app for waste photo categorization to streamline recyclable collection. Go, Flutter, Python on AWS.
View projectGitHub
Public repositories
Open source work and side projects on GitHub.
Writing
Articles & deep dives
Thoughts on distributed systems, AI, cloud architecture, and open source.
Background
Experience & skills
Education
University of Peradeniya
Nov 2014 – Feb 2019
Bachelor of Science in Computer Engineering
Skills
Languages
Frameworks
Infrastructure & Tools
Work Experience
Senior Software Engineer (Backend / Platform) at Bitsmedia
- Architected high-throughput distributed microservices using Node.js (NestJS) on GKE sustaining 3000+ RPS
- Designed production API platform with rate limiting and HMAC request signing serving millions of users
- Built event-driven streaming pipelines using Pub/Sub and Debezium/Kafka with Dataflow and BigQuery
- Led LLM-powered content generation platform orchestrating multimodal AI inference pipelines
- Optimized Redis caching achieving 40% reduction in API latency
- Owned CI/CD pipelines and IaC deployments across GCP with comprehensive observability
Senior Software Engineer at Sysco Labs
- Developed distributed microservices using Java (Spring Boot) on AWS ECS for freight management
- Built real-time streaming pipelines using AWS Kinesis and Lambda
- Implemented OAuth 2.0 and RBAC for enterprise workflows
- Established IaC using Terraform and automated CI/CD with Docker
Software Engineer at DirectFN
- Developed secure backend APIs in Node.js for financial trading systems
- Containerized services using Docker with monitoring and observability
Contact
Have a project? Let's talk.
I'm always open to discussing platform architecture, distributed systems, AI infrastructure, or open-source collaboration.