Systems Builder

Designing backend systems that stay fast, reliable, and simple.

Senior backend engineer with 7+ years building fintech and regtech systems across Southeast Asia. Focused on performance, reliability, and cost.

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Based in Indonesia · Remote since 2021

Specializing in Java, Go, Spring Boot, AWS, microservices, and distributed systems.

swandono@backend:~

Career Impact

Highlights from engineering work focused on performance, reliability, and cost efficiency.

96% latency reduction

Optimized SQL, caching, and computation (5s -> 0.2s)

70% throughput gain

Query optimization and refactoring for scale

25% infra cost cut

Resource optimization and leaner cloud usage

99.9% uptime

Messaging APIs for real-time trading

Professional Experience

Backend leadership across fintech, regtech, and education platforms.

Senior Backend Engineer

Cynopsis Solutions PTE. LTD. Singapore Oct 2022 - Present
  • Cut API latency 96% (5s -> 0.2s) by re-architecting SQL queries, caching layers, and computation logic.
  • Drove a 70% throughput gain through query optimization and refactoring.
  • Built event-driven pipelines on RabbitMQ for scalable asynchronous processing.
  • Deployed microservices to AWS with zero-downtime rollouts.
  • Helped modernize a multi-tenant compliance platform of ~10 microservices serving financial institutions across Southeast Asia, with per-client PostgreSQL schemas of 30-50 GB.
  • Mentored junior engineers and coordinated release cycles with QA and product teams.

Backend Engineer

Call-Levels Singapore Jun 2021 - Oct 2022
  • Reduced API response time by over 50% via database indexing and caching strategies.
  • Integrated WhatsApp and Telegram messaging APIs to power real-time trading alerts at 99.9% uptime.
  • Cut infrastructure costs 25% by optimizing server resource utilization.
  • Shipped features rapidly within Agile cross-functional teams.

Fullstack Developer

Probo.id Indonesia Nov 2019 - Jun 2021
  • Built a chatbot-driven education platform serving thousands of students.
  • Improved backend performance 35% through optimized data flow and caching.
  • Designed modular APIs and frontend integrations, improving responsiveness.

Technical Skills

Core tools, platforms, and engineering focus areas.

Languages

JavaGoTypeScriptPython

Frameworks

Spring BootNode.jsReactNext.js

Databases

PostgreSQLMySQLRedis

DevOps & Cloud

AWSDockerGitRabbitMQCI/CD Pipelines

Core Expertise

MicroservicesDistributed SystemsPerformance OptimizationSystem ScalabilityAgile Delivery

Let’s talk

Reach out for backend systems, performance tuning, or architecture reviews.

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dev@swandono.com