YTOSKO

Saiki Sarkar — Software Engineer & Web Developer in Sylhet, Bangladesh

Complexity, Engineered. I build software platforms, automate complex workflows with tools like n8n, Make, Zapier, and OpenClaw, and apply mathematical reasoning to difficult technical problems.

Saiki Sarkar (Ytosko) is a software engineer, web developer, and programmer based in Sylhet, Bangladesh. He is Principal Systems Architect at Spacebly and Associate Technology Manager at Together CFO, holds an M.Sc in Mathematics from Shahjalal University of Science & Technology (SUST), and has delivered 100+ external client projects plus 40+ Upwork contracts across web development, workflow automation, and API engineering.

Full-stack software developer for web applications, workflow automation, and APIs — working from Sylhet with clients in Bangladesh and worldwide.

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Track record

Proof you can check

No anonymous quotes — every item links to something verifiable.

40+ completed contracts with client feedback on Upwork · Open-source work on GitHub

Current roles

What I build

Web Development

I design and build fast, maintainable web applications — from marketing sites that need to load instantly to internal dashboards and client portals that carry real business logic. Every build is full-stack: the interface, the API behind it, the database, and the deployment.

Workflow Automation

Most teams lose hours every week moving data between tools by hand: copying form submissions into a CRM, reconciling invoices, chasing status updates. I replace those manual steps with automated workflows that run reliably and tell you when something goes wrong.

API & Backend

A product is only as dependable as the systems behind it. I design and build APIs, backend services, and the infrastructure they run on — with clear service boundaries, predictable data flows, and the observability to debug problems quickly.

Mathematical & data modeling

An M.Sc in Mathematics from Shahjalal University of Science & Technology (SUST) in Sylhet underpins predictive modeling, data analysis, and research-grade problem solving.

Selected projects

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Work with Saiki Sarkar

Have a web application, automation, or API project? See how engagements work, book a 30-minute call, or email ytosko@ytosko.dev.

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