MICHAEL RYAN
Engineering Lead, Platform & Data
contact@tanmichaelryan.com | Auckland, New Zealand | www.linkedin.com/in/tan-michael-ryan | gitlab.com/tanmichaelryan/

SUMMARY
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Engineering lead and staff-level engineer with 10+ years building platform and data
systems, the last 6+ leading teams of up to ten. I hire, mentor and set delivery cadence
while staying close enough to the code to be useful in a design review. Strongest where
reliability, developer experience and delivery pace meet.

SKILLS
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Leadership: team leadership, hiring and mentoring, delivery cadence, stakeholder management
Languages: Go, Ruby, Python, Kotlin, SQL
Platform: GCP, Kubernetes, Docker, Terraform, CI/CD
Data: BigQuery, Kafka, dbt, PostgreSQL

EXPERIENCE
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Staff Engineer (Feb 2025 – present)
PT Dkatalis Digital Lab, Auckland, remote to Jakarta (Full-time)
- Owned end-to-end delivery of a new payroll system, now live in production and adopted by
  customers.
- Architected the database layer for a Google Drive–style access management system,
  integrating Ory for auth and authorisation.
- Improved engineer onboarding clarity and bootstrapped a knowledge-sharing session that
  grew into a recurring tribe-level event.

Engineering Manager / Tech Lead (Hands-On) (Oct 2022 – Dec 2024)
Govtech Edu Indonesia, Jakarta, Indonesia (Full-time)
- Led a re-architecture from PostgreSQL to BigQuery and implemented a message broker,
  improving data quality from 80% to 92% while reducing latency.
- Improved team delivery by shifting the sprint cycle from 2 weeks to 1 week, leading to
  quicker project delivery and better collaboration.

Engineering Manager (Hands-On) (Apr 2021 – Oct 2022)
Bukalapak.com, Jakarta, Indonesia (Full-time)
- Led a team of 8 engineers managing the marketplace seller platform at 100–300 RPS using
  Ruby, Golang, and GCP.
- Led the ClickHouse project, reducing MySQL query times from constant timeouts to under 1
  second.

Technical Lead (Hands-On) (July 2019 – Apr 2021)
Bukalapak.com, Jakarta, Indonesia (Full-time)
- Led a task force of 6 senior engineers to transition seller membership from
  subscription-based to fee-based within one week with zero incidents.
- Mentored 3 junior engineers, all of whom advanced to mid-level within one year.

Software Engineer (Mar 2017 – July 2019)
Bukalapak.com, Jakarta, Indonesia (Full-time)
- Achieved a 99% SLO by implementing proper monitoring, alerting, and testing procedures.

Software Developer (Apr 2015 – Mar 2017)
Liberty Jaya, Jakarta, Indonesia (Full-time)
- Developed and maintained internal tools to support business operations of clients,
  improving workflow efficiency and automation.

PROJECTS
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Flick (Active)
High-throughput feature-flag service: roll out to a deterministic % of users without a
deploy.
Go, gRPC, REST

JsonTool (Active)
Client-side JSON toolkit: beautify, minify, filter, and convert to CSV. Zero dependencies.
HTML, JavaScript

Local LLM Workbench (Active)
Research and testing harness for running and evaluating self-hosted LLMs.
Python, Ollama

EDUCATION
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S. TI (BSc) Computer Science, Bina Nusantara, Indonesia (2011 – 2015)