Erkhjin Oyunbaatar
Software Engineer @Pinecone Studio
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WORK HISTORY
Software Engineer @Pinecone Studio
Bellevue, WA, US
Built and deployed cloud infrastructure on AWS to support regulatory-compliant HR and payroll systems, implementing secure data-handling practices to ensure high availability and reliability- Developed payroll accuracy, analytics, and time-tracking features using React and Node.js, implementing automated validation and attendance reconciliation logic that reduced payroll discrepancies by 20% and manual processing by 30%- Implemented full-stack application features for a community web platform, developing event management, education program workflows, donation flows, and role-based user access using React, Node.js, Express, PostgreSQL, and Prisma while enforcing permission boundaries and data consistency- Developed robust CI/CD pipelines via GitHub Actions and Docker while optimizing PostgreSQL indexing strategies, cutting deployment time by 40% and improving query performance by 35%- Partnered with cross-functional internal and external stakeholders to solve open-ended problems through collaborative design, delivering audit-ready, compliant technical solutions.
EDUCATION
University of Toronto
Bachelor of Science - BS, Computer Science
ABOUT ERKHJIN OYUNBAATAR
I’m a Software Engineer with a strong foundation in full-stack development, data analytics, and cloud infrastructure, passionate about building systems that are both scalable and intelligent. My experience spans from front-end design to backend architecture, where I apply modern frameworks and data-driven engineering principles to create reliable, efficient, and user-focused solutions that deliver measurable impact.I thrive at the intersection of software engineering and data, developing applications that not only function seamlessly but also generate meaningful insights through clean data pipelines, automation, and intelligent design. I am deeply interested in leveraging AI-powered tools, cloud platforms, and DevOps practices to streamline workflows, enhance system performance, and enable smarter decision-making across teams.Core Strengths & Tools:Full-Stack Development: React.js, Next.js, Node.js, Django, Flask, Java, Python, JavaScript, TypeScript, C, RDatabases: PostgreSQL, MongoDB, MySQL, Cassandra, SQLite, OracleDBCloud & DevOps: AWS, Docker, GitHub Actions, CI/CD, JiraData Analytics & Visualization: Power BI, Tableau, D3.js, Excel, Python (Pandas, Airflow, Spark)Certifications: Meta Full-Stack Developer | IBM Data EngineeringWebsite: eric-portfolio-46vb.vercel.app
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