Open to opportunities

Sidarin Sip

@sidarinsip

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Senior Full-Stack Engineer with expertise in scalable web applications.

United States

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What I'm looking for

I am looking for a role that fosters innovation, collaboration, and growth opportunities.

As a Senior Full-Stack Engineer with over 10 years of experience, I specialize in architecting and scaling high-traffic web applications. My expertise lies in designing performant backend systems using Ruby on Rails, Node.js, and TypeScript, while ensuring clean architecture, reliability, and maintainability. I have a proven track record of building intuitive frontends with React and Hotwire, and implementing secure authentication flows with Devise, OAuth2, and JWT.

Throughout my career, I have successfully led cross-functional teams and delivered robust software solutions in fast-paced environments. Notable achievements include integrating Amazon Connect services to enhance customer service efficiency by 35%, and automating data entry processes that supported over 50,000 users, reducing errors by 95%. I am passionate about mentoring junior developers and fostering a collaborative team culture, which has accelerated onboarding and improved overall productivity.

Experience

Work history, roles, and key accomplishments

Senior Full-Stack Engineer

Good Measures

Jun 2020 - Feb 2025 (4 years 8 months)

Integrated Amazon Connect phone services using AWS Lambda, Kinesis, and DynamoDB, improving customer service routing efficiency by 35%. Engineered full-stack integration with BodyTrace smart scale platform, leveraging JSON REST APIs to automate ordering and real-time weight sync for over 50,000 users, reducing manual data entry errors by 95%. Led Zoom webinar integration and built a notification s

AWS Lambda Kinesis DynamoDB JSON REST API Ruby ActionMailer Ruby on Rails PostgreSQL jQuery Bootstrap

Full Stack Engineer

Valimail

Nov 2017 - Apr 2020 (2 years 5 months)

Designed and built the first production version of Valimail’s core web platform using Ruby on Rails, Node.js, JavaScript, and React, enabling the company to onboard its first 100 enterprise customers. Created a high-performance DNS server in Go, optimized to handle 1M DNS queries per second, supporting DMARC, SPF, and DKIM. Led the architecture and deployment of backend data pipelines in Go using

Ruby on Rails Node JavaScript React Go PostgreSQL Apache Kafka Devise SAML Ansible Terraform AWS Lambda

Full Stack Developer

Prime Trust

Aug 2014 - Jul 2017 (2 years 11 months)

Assisted with the development of 90% of the core Ruby on Rails backend, successfully launching a financial platform MVP in under 3 months, enabling the movement of over $16 million in assets. Partnered with the finance reconciliation team to replace a manual auditing workflow with an automated data pipeline, reducing reconciliation time by 20 staff-hours per week and improving error detection by 7