Systems Builder

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

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

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Based in Indonesia · Remote since 2021

Specializing in Java, Golang, 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% performance gain

Backend refactors and query optimization 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
  • Delivered 96% latency reduction by optimizing SQL queries, caching, and computation logic.
  • Achieved a 70% backend performance gain through refactoring and query tuning.
  • Built event-driven pipelines with RabbitMQ for scalable async processing.
  • Deployed microservices on AWS with zero downtime rollouts.
  • Mentored two junior developers and coordinated release cycles with QA and product.

Backend Engineer

Call-Levels Singapore Jun 2021 - Oct 2022
  • Reduced API response time by over 50% via indexing and caching.
  • Integrated WhatsApp and Telegram APIs for real-time trading with 99.9% uptime.
  • Optimized infrastructure usage, cutting costs by 25%.
  • Collaborated in Agile teams to ship new features quickly.

Fullstack Developer

Probo.id Indonesia Nov 2019 - Jun 2021
  • Built a chatbot-driven education platform serving thousands of students.
  • Improved backend performance by 35% through optimized data flows.
  • Designed modular APIs and frontend integrations to improve responsiveness.
  • Launched features that boosted engagement by 25%.

Technical Skills

Core tools, platforms, and engineering focus areas.

Languages

JavaGolangTypeScriptPython

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