CONNECTION ESTABLISHED

YTOSKO

Saiki SarkarSoftware Engineer · 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.

Explore Work →Schedule a Call↗

CONNECTION ESTABLISHED

YTOSKO

Saiki SarkarSoftware Engineer · 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.

Explore Work →Schedule a Call↗

$50k+Client Value DeliveredOutside Upwork

100+External ProjectsCustom Web & Automation

40+Upwork Contracts$5k+ Platform Earnings

SUST M.ScMathematics DegreePredictive & Data Modeling

CAPABILITIES / 03

Three Disciplines. One Engineering Approach.

Engineering software, orchestrating automated workflows with n8n, Make, Zapier, and OpenClaw, and applying mathematical reasoning to complex technical problems.

SYSTEM VIEWER /01Web Systems & APIs

FULL-STACK ENGINEERING

Architecting web applications, high-performance APIs, and type-safe frontends across modern browser and server stacks.

Web development services →API & backend services →

STACK /

TYPESCRIPTREACTJAVASCRIPTEXPRESSSUPABASE

WORK ARCHIVE

A body of work. Across domains.

Systems built, tools released, research published, and ideas documented.

09Commercial SystemsCommercial

08Automation ProjectsAutomation

32Open Source ReposOpen Source

04Research WorksResearch

03Articles & WritingArticles

/01COMMERCIAL SYSTEM

Together CFO

Financial management platform for modern businesses.

EXPRESS

/04RESEARCH

SecureIT–A weapon to prote...

This paper is about describing the features of a software that was developed for its user safety which we called SecureIT is a android based soft ware using Android SDK along with Firebase and Google map SDK along with this http URL. The aim of developing this project was to make sure and taking its users safety to a next level. Actually now a days some crime incidents like rapes, fire accidents and snatchings are very common and we believe many of those can be prevented if victim got support at the right time. According to the well known daily news paper of Bangladesh The Daily Star there were about 1413 women was rapped where 76 women were dead in 2019. On the same pa-per it also said that in 2018 and 2017 the number of rapes were 732 and 818 where we can easily get that the number increases to almost double in 2019. Where we get a point that if those girls get support or get people known about their location at the right time they might get rid of the situation and the number of rapes could be reduced a lot because we all know that now a days using mo-bile smartphone is too easy for people. Although leading Chinese mobile phone company Xiaomi introduced a new feature Emergency SOS service in their mobile phones at the end of 2018 with a MIUI 10 update but this feature is only limited to the Xiaomi phones and it was well advertised as well. This paper will briefly describe all the features of our software and its usages.

SUST M.SC MATHEMATICS · RESEARCH

56+ MORE PROJECTS, REPOSITORIES, PAPERS & ARTICLESAcross all domains and initiatives · Active 01 / 22

Academic & Research Foundation

From Mathematical Rigor to High-Performance Software Engineering

Holding an M.Sc and B.Sc in Mathematics from Shahjalal University of Science & Technology (SUST), my engineering approach is rooted in algorithmic logic, statistical precision, and quantitative problem solving.

SUST Mathematics M.Sc

Advanced numerical methods, computational linear algebra, and mathematical modeling.

Published Research

SEQIRP predictive epidemic modeling & BLE / Firebase contact tracing protocols.

Learn More About My Background →

Verified Credentials

RolePrincipal Systems Architect @ SpaceblyAssociate Technology Manager @ Together CFO

EducationM.Sc & B.Sc in Mathematics (SUST)

Primary StackPython, TypeScript, React, FastAPI

VERIFIABLE WORK / 03

Proof you can check.

No anonymous quotes. Everything here links to something you can verify yourself.

Live client sites

Healthcare: Avella Fertility, Medical Supplies DME
Pharmacy: Warrington Pharmacy
Financial services: Together CFO, Financial Fusion
Non-profit: Chohan Foundation

All projects →

Upwork track record

40+

Completed contracts, with job history and client feedback published on Upwork.

View Upwork profile ↗

Current roles

Principal Systems Architect
Spacebly ↗
Associate Technology Manager
Together CFO ↗

Full background →

Code & credentials

Public repositories

Automation nodes, AI apps, and tools, open on GitHub.

M.Sc in Mathematics

Shahjalal University of Science & Technology, Sylhet.

View GitHub ↗

WRITING / LATEST

Ideas, systems & things worth understanding.

View All Writing→

Anthropic Claude Duet and the Practical Race for Workplace AI Agents

+/01 LATEST

/01LATEST·Oct 23, 2026

COLLABORATION & CONTACT

Have a technical challenge worth solving?

I am open to discussing new web applications, intelligent automation workflows, or technical consulting engagements.

Schedule 30-Min Call→Send a Message↗

Saiki SarkarSoftware Engineer · Sylhet, Bangladesh

Complexity, Engineered.

Saiki SarkarSoftware Engineer · Sylhet, Bangladesh

Complexity,
Engineered.

Three Disciplines. One Engineering Approach.

FULL-STACK ENGINEERING

AUTOMATION & AI SYSTEMS

MATHEMATICAL & DATA MODELING

FULL-STACK ENGINEERING

A body of work. Across domains.

Together CFO

Financial Fusion

Chohan Foundation

Avella Fertility

SecureIT–A weapon to prote...

Anthropic Claude Duet and ...

Tesla, SpaceX, and the Har...

From Mathematical Rigor to High-Performance Software Engineering

Proof you can check.

Ideas, systems & things worth understanding.

Anthropic Claude Duet and the Practical Race for Workplace AI Agents

Tesla, SpaceX, and the Hard Questions Behind a Potential Merger

Waymo Fleet Expansion Moves Autonomy Into an Operations Test

Have a technical challenge worth solving?

Saiki Sarkar/Software Engineer · Sylhet, Bangladesh

Complexity, Engineered.

Saiki SarkarSoftware Engineer · Sylhet, Bangladesh

Complexity,Engineered.

Three Disciplines. One Engineering Approach.

FULL-STACK ENGINEERING

AUTOMATION & AI SYSTEMS

MATHEMATICAL & DATA MODELING

FULL-STACK ENGINEERING

A body of work. Across domains.

Together CFO

From Mathematical Rigor to High-Performance Software Engineering

Proof you can check.

Ideas, systems & things worth understanding.

Anthropic Claude Duet and the Practical Race for Workplace AI Agents

Tesla, SpaceX, and the Hard Questions Behind a Potential Merger

Waymo Fleet Expansion Moves Autonomy Into an Operations Test

Have a technical challenge worth solving?

Saiki SarkarSoftware Engineer · Sylhet, Bangladesh

Complexity,
Engineered.