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Available for freelance & remote

Mohammad
Safwan Athar.

Senior Software Engineer & Project Lead · Full-Stack · DevOps · AI

I lead and ship products end to end, architecting backends, building frontends, automating cloud infrastructure, and deploying agentic AI. I run multiple projects at once and adapt to whatever the work demands. Language-agnostic by philosophy, engineering-first by practice.

Thousands
Daily clicks · RailTC
2yr 9mo
Senior Engineering
3+
Developers Mentored
3
Cloud Platforms
001

Products

built, shipped & owned by me
RailTC.in
Founder · Lead Developer
Live

A production-grade PNR prediction engine for Indian Railways. I reverse-engineered a custom OCR extraction pipeline to bypass expensive third-party APIs, serving real-time predictions with automated post-journey verification against actual chart outcomes.

Thousands of daily clicks · real-time predictions at scale
Next.jsFastAPIPostgreSQLMLOCR / TesseractTechnical SEO
Visit railtc.in
Aya ToolWall
Creator · Open Source
Open Source

A fail-closed security gateway for AI agent tool calls. An LLM can emit a schema-valid tool call that is still unsafe to run. ToolWall is the gate that blocks the dangerous ones (destructive ops, leaked secrets, out-of-range values, hallucinated tools) before they ever execute.

28 / 28 known attacks blocked · 0 false blocks · pip install toolwall
PythonLLM SecurityAI AgentsPolicy EngineZero-dependencyMIT
Visit toolwall.aya-ai.xyz
002

How I Work

one person, the whole stack

I own every layer a product needs to ship. Hand me a problem and I take it from architecture to production, across the whole stack, on my own or leading a team.

01
Frontend

Responsive, accessible interfaces in React, wired straight to the APIs behind them.

02
Backend

FastAPI and Django services, clean API design, data modeling, and real performance.

03
DevOps & Cloud

Docker, Kubernetes, CI/CD, and multi-cloud on AWS, GCP, and Huawei Cloud.

04
AI & Agents

LLM and RAG features, agentic workflows, and guardrails like Aya ToolWall.

05
Security

Audits, penetration testing, and hardening built in from the first commit.

06
Leadership

Running several projects at once and mentoring developers into full ownership.

003

Experience

2022 → present
Jan 2026 – Present
RailTC
Founder

Founded and lead RailTC, an independent product I built and run solo, now serving thousands of daily users across India.

Dec 2023 – Present
Bottrion Systems Pvt Ltd
2 yrs 9 mos · Remote

Project lead and technical architect across multiple international platforms. I run several projects at once, end to end and largely on my own, spanning backend, frontend, DevOps, and AI. I own architecture, system optimization, and the full production lifecycle from infrastructure automation to high-availability release.

Senior Software Engineer · Project LeadSep 2025 – Present

Leading and managing multiple projects concurrently across the full stack: backend architecture, frontend delivery, DevOps, and AI features, while guiding associates and enforcing security-first engineering practices.

Software Development EngineerJan 2025 – Sep 2025

Spearheaded backend development as both team member and solo developer, managing the entire DevOps lifecycle plus production operations, monitoring, and troubleshooting.

Full Stack DeveloperMar 2024 – Dec 2024

Led backend for an e-commerce platform (Django REST), integrated the frontend, and deployed production on Huawei Cloud, leading a GCP-to-Huawei data migration with OBS + CDN.

Full Stack DeveloperDec 2023 – Feb 2024

Built foundational APIs for product management and authentication, collaborated on frontend integration, and set up containerized dev environments on GCP with Docker.

Stack: Django · FastAPI · Flask · PostgreSQL · MongoDB · Redis · Docker · Kubernetes · GitHub CI/CD · Nginx · Celery · Huawei Cloud · AWS · GCP

Sep 2022 – Aug 2023
Catalyst Institute of Science
Administration Assistant · Achalpur, MH

Supported institutional administration and operations while building the foundation for a full-time engineering career.

004

Technical Stack

language-agnostic
Core Languages
Python (Expert)Node.jsJavaCC++JavaScriptSQL
Web & AI
FastAPIDjangoReactLangChainCrewAIRAG SystemsGemini / GPT-4
DevOps & Cloud
AWSGCPHuawei CloudDockerKubernetesOpenShiftJenkinsAnsibleLinux
Specialized
Reverse EngineeringOCR (Tesseract)Technical SEOPentestingSystem Design

// Prioritizing architectural integrity and logic over specific syntax, adaptable to any environment.

005

Impact

01
Reverse Engineering

Bypassed high-cost API dependencies for proprietary projects by engineering custom scrapers and automation scripts.

02
Team Mentorship

Upskilled 3+ junior developers and interns, moving them into independent feature ownership within 3 months.

03
Organic Growth

Leveraged technical SEO to rank products on the first page of search, driving thousands of organic clicks a day to RailTC.

04
Security

Conducted periodic security audits and penetration testing to harden API endpoints against common vulnerabilities.

007

About

Mohammad Safwan Athar

I'm a Senior Software Engineer at Bottrion Systems, founder of RailTC, and creator of Aya ToolWall, an open-source security gateway for AI agents. I run multiple projects at once across backend, frontend, DevOps, and AI, owning architecture and end-to-end delivery.

I manage the complete DevOps lifecycle: infrastructure automation, CI/CD pipelines, and high-availability production across Huawei Cloud, GCP, and AWS. My goal is simple: ship optimized, secure, and scalable systems that hold up under real traffic.

Education
BCA, Vidyabharati Mahavidyalaya,
Amravati · 2020–2023 · First Division
Based in
New Delhi, India
Remote / Relocation
Certifications
Python: Primer, Alpha, Beta
Languages
English · Hindi · Urdu · Marathi