Invest OS
Personal ops OS for Zerodha DIY investing: syncs fills, goal-tags transactions, SIP checklist, and reconciles leftovers. Goal tags stay truth — brokers are the mirror.
PythonFastAPIPostgreSQLJinja
View project Safwan Vk · Lead Backend Engineer
Lead Backend Engineer for scalable products & APIs
Healthcare, aviation, and SaaS — I design and ship backend systems that hold up in production. Full-stack when the product needs UI and APIs together.
About
Background
I'm a Lead Backend Engineer at Barq Group , building healthcare systems that hospital teams can operate and extend.
I focus on clear domain models, readable APIs, and reliable deployments. Backend-first — and I ship full-stack when clients or teams need web or mobile alongside the service layer.
- 5+
- Years on backends
- Healthcare · Aviation · SaaS
- Domains
- Python · Django · FastAPI
- Core stack
Projects
What I've built
Production APIs and apps across investing, workflows, vision, and healthcare — with write-ups, demos, and source where available.
Project previews
Preview tiles — scroll for details and links.
Selected work
InnoFlow
Document and workflow platform: DRF APIs for management, automation, and compliance — Vue.js client for operators.
PythonDRFPostgreSQLVue.js
View project Foodai
CV pipeline and Flask API for vegetable detection; Android client for capture and recipe suggestions.
PythonFlaskMySQLAndroid
View project Medicare
Pharmacy inventory and orders: Django REST backend with a React admin and store-facing client.
PythonDjango RESTSQLiteReact
View project More projects
Use cases
Systems I take on
Where I’m most useful: platforms teams integrate against, regulated workflows, and internal ops backends.
API platforms
Auth, contracts, and integrations other engineers can extend without surprises.
Healthcare & compliance
Hospital ops, audit-friendly workflows, and data models that scale across sites.
Internal ops tools
Dashboards, automation, and APIs that replace weekly manual work.
Process
From domain knowledge toproduction APIs
01 · Where it starts
Stack
What I build with
Python, Django, and FastAPI for services and data models — plus React, Vue, or mobile clients when the product needs a full-stack delivery.
Frameworks
DjangoDjango REST frameworkFastAPIFlaskFlask-RESTful
Languages
PythonJavaScriptHTMLCSS
Database
PostgreSQLMySQL
Tools
BashGit & GitHubPostmanChrome DevTools
Experience
Roles & impact
Lead and senior backend work in healthcare, aviation, SaaS, and education.
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Own backend architecture and APIs for healthcare products that improve hospital operations and patient experience across many facilities.
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Led R&D initiatives to design and deliver innovative MLM features, optimizing processes and reducing development time by 10%. Built intelligent automation and data-driven solutions, driving business efficiency and client success.
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Built backend services for TARA, a SaaS platform for aircraft maintenance compliance and operational analytics. Designed and implemented Django REST APIs that replaced legacy processes and powered web and native clients.
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Contributed to the development of innovative educational administration products, creating scalable and user-centric software solutions to enhance institutional efficiency and user satisfaction. Played a key role in building XEMS, a digital false numbering system for answer script evaluation, replacing manual processes and ensuring secure and error-free handling of revaluation requests.