Damodharan Thulasiram

SUMMARY

I am a Staff Engineer with 10+ years of experience. I have led several 0 - 1 initiatives, built complex systems, managed and coordinated cross-functional teams in fast paced environments. Have a track record for consistently building star teams.

EXPERIENCE

HingeHealth Inc | Staff Engineer Oct 2023 ‐ Present

Migrate large components of a legacy system (Ruby on Rails) to nestjs stack for HIPAA compliance
Benchmarked postgres full text search and trigram indexes with pg_bench and convinced a diverse group of panelists against elastic search
Identify hotspots, tech debts and systematically stabilize an in-house workflows engine
Integrated DuckDB as a temporary OLAP engine in combination with postgres for realtime analytics on top of transactional loads
Built a tiny ranking engine based on statistical methods in python and databricks to queue priority users for the care team

Simpl Inc | Senior Staff Engineer Sep 2020 ‐ Jul 2023

Led a team of 6 engineers in architecting and developing an e-commerce platform processing ~2Cr in daily sales
The system was built in under 3 months, designs transcending multiple teams and legacy systems and handles a peak load if 10k RPM
Continuously monitor and improve bottlenecks with profiling and observability tools (including but not limited to query latencies, index corruption, index usage ratio and blocking codepaths)
Ensure processes and SLAs by adhering and monitoring MTTAs(<2min) and MTTRs(<2hrs) with PagerDuty
Helped develop an unified eligibility profile to curb the tail latencies > 100ms from 99.9 to 99.99 percentile for a peak load of 45K RPM
Driven best practices in golang especially in validations, errors and logging
Built the current documentation portal with Docusaurus(React, Tailwind) and OAPI3 spec compatible tooling with Python
Built In-house fixed window rate limiter (using redlock) paired with AWS WAF to ensure fair usage of eligibility calls
Headed the Internal Python Community and gave various talks on topics like async and concurrency, underrated libs (available on my blog)

Treebo Hotels | Principal Software Engineer May 2016 ‐ Aug 2020

Managed Pricing and Taxation System using a multi tier rule engine framework
Scaled the Couponing System which uses Drools engine for rule evaluation and back tracking (Rete Algorithm) to handle millions of coupons
Developed a recursive settlement system which can for retroactively apply adjustments until previous financial year
Developed in-house Invoicing Solution inspired from DDD principles which reduced disputes by 40% and the TAT from 30days to less than a day
I was a contractor and worked in my capacity as a Software Engineer from May 2016 - Feb 2018

Infosys Technologies Ltd | Systems Engineer Jun 2014 ‐ May 2016

Worked in high volume data ingetion and reporting systems written in COBOL managing the General Ledger and Inventory Systems for Fritolay(Pepsico) NA.

EDUCATION

Hindustan University Jun 2010 ‐ May 2014

Bachelor - Mechanical

PROJECTS

Simple Android Debloater | Developer, Designer Aug 2023 ‐ Aug 2023

https://github.com/thulasi-ram/simple_android_debloater

Simple Android Debloater is a free and open source cross platform desktop app to disable unwanted system apps that carriers / OEMs can force install in our mobile phones. Built with Tauri(Rust) and SvelteKit(TypeScript).

Kombu Rabbitmq | Developer Aug 2021 ‐ Aug 2021

https://github.com/thulasi-ram/kombu-rabbitmq

Lightweight user friendly amqp consumer and producer alternative to Celery pluggable into both Django and Flask Frameworks

Django Feature Toggle | Developer Sep 2017 ‐ Sep 2017

https://github.com/thulasi-ram/django-feature-toggle

Feature Toggle implementation as a pluggable django app. Supports SimpleToggle, TimeBombToggle and other ways to manage release of new features that can be easily toggled on / off

SKILLS

Languages: Python, Go, Java, SQL, Ruby, Rust, NodeJS

Frameworks: Django, Flask, FastAPI, Celery, SqlAlchemy, Gin, Tokio, Axum

Infra: AWS, GIT, Postgres, MongoDB, Jenkins, CircleCI, Elastic Search, Distributed Systems, ELK, Docker, Kubernetes, Prometheus, Grafana, Kafka, RabbitMQ, Sentry, HAProxy, Nginx, Caddy, Jaeger, NewRelic, Datadog, Sumologic