Senior Backend Engineer | Engineering Squad Lead | Distributed Systems and High-Throughput Services
Jakarta, Indonesia | rseptian08@gmail.com | 
- I'm currently learning AI workflows and integrations using tools such as GitHub Copilot, OpenCode, MCP, n8n, and OpenClaw. I use them to improve my daily coding process and help teams adopt AI in practical ways.
- I'm interested in collaborating on high-throughput backend services, distributed systems, and open-source backend tooling
- I'm looking for help with frontend and full-stack integrations for personal side projects
- Ask me about Go microservices, high-throughput cart and checkout systems, idempotent APIs, Kafka, and payment engineering
- You can reach me at rseptian08@gmail.com or through LinkedIn
- Pronouns: He/Him
- Fun fact: I'm a nocturnal engineer. My best code ships after midnight.
Backend engineer with 8+ years of experience, including more than 5 years in B2B, building high-throughput microservices with Go, Java, and TypeScript. My main areas of focus are:
- High-throughput cart and checkout services handling roughly 15,000 requests per second
- Idempotent payment endpoints and financial correctness
- OAuth2 authentication systems and distributed systems
- AWS, GCP, Kubernetes, Kafka, SQS, and gRPC
- Observability with Prometheus, Grafana, Datadog, and New Relic
Senior Software Engineer at ALTO Networks (May 2024 to Present)
- Built an in-house ATM simulator, cutting simulator costs by more than 10%
- Enabled API-driven testing, reducing QA coordination effort by roughly 80%
- Created load testing tools for capacity planning and cost efficiency
Engineering Squad Lead at Aplikasi Super (Feb 2023 to May 2024)
- Reduced API latency from 15 seconds to less than 100 milliseconds and improved uptime from 85% to 98%
- Increased transaction volume by 5%
- Standardized backend practices, including graceful shutdown, circuit breakers, and centralized logging
Technical Lead at Advotics (Sep 2021 to Dec 2022)
- Reduced task management completion time from 15 minutes to less than 1 second
- Optimized reporting from 20 minutes for 3,000 rows to 1 second for 20,000 rows
Software Engineer at Tokopedia (Jan 2020 to Aug 2021)
- Built Cart and One-Click Checkout services handling roughly 15,000 requests per second with approximately 98% uptime
- Designed idempotent REST and gRPC APIs with distributed locking
Medium Backend Developer at Telkom Indonesia (Feb 2018 to Dec 2019)
- Built Nusaku.id, a tourism social media platform
- Developed B2B IoT solutions for Indihome Smart
Languages
Cloud & Infrastructure
Messaging & APIs
Databases
Observability
| Project | Impact |
|---|---|
| Gateway Service at Super | 13% uptime improvement, 75% cost reduction |
| Cart Management at Super | 20 seconds to less than 100 milliseconds load time, zero complaints |
| Cart and Checkout at Tokopedia | Roughly 15,000 requests per second, 98% uptime |
| Survey Service at Advotics | 20 minutes to less than 1 second, 3,000 to 20,000 row capacity |
Full case studies: Portfolio on Notion
- Bachelor's in Computer Science at Binus University, Jakarta (2026 to Present)
- Associate's in Computer Software Engineering at Telkom University, Bandung (2016 to 2019)
| Repository | Description | Language |
|---|---|---|
| my-notes-as-software-engineer | Notes and insights from my experience as a Software Engineer. Contributions welcome! | Markdown |
- Google AI Edge Gallery issue #561: Proposed a generic intent system for custom skills using the
run_intenttool. Open feature proposal. - n8n pull request #18640: Proposed an option for the VectorStorePGVector node to skip table validation and creation. Open and not yet merged.
Open to opportunities in backend engineering, distributed systems, and technical leadership roles.