Portfolio — Senior Backend Engineer

Abha Mandwale

Python & PHP · SaaS Systems · API Architecture · 14+ Years

14+ Years Experience
8 yrs Lead Engagement

Senior Backend Engineer and System Designer with 14+ years building high-performance, distributed SaaS systems across logistics, fleet management, and insurance domains. Proven at architecting REST APIs, microservices, and async processing pipelines that serve real-time production workloads. Known for owning systems end-to-end — from schema design to deployment — and for raising engineering quality through mentorship and architectural leadership.

Senior Backend Engineer & Technical Lead
Dec 2017 – Feb 2026
Arvia Pty Ltd — Remote, NSW Australia
  • Grew from individual contributor to technical lead, taking full ownership of backend architecture and team delivery across an 8-year engagement.
  • Architected core backend systems covering real-time job scheduling, route optimization, and progression tracking.
  • Designed and maintained 15+ REST API endpoints with versioning strategy and backward compatibility.
  • Eliminated production bottlenecks via Redis caching and query optimisation — improved response times significantly under peak load.
  • Built async job processing pipelines (queue-based and cron-scheduled) fully decoupled from the request lifecycle.
  • Implemented JWT, RBAC, 2FA/MFA — zero reported auth breaches during tenure.
  • Led a team of engineers: coding standards, code reviews, architectural decisions.
Senior Developer
Feb 2016 – Nov 2017
Chapter 247 Infotech — Indore
  • Designed and built REST APIs and relational database architectures for multi-workflow business applications using PHP (CodeIgniter).
  • Delivered client-facing systems end-to-end, managing requirements, development, and deployment.
Software Development Engineer
Jul 2013 – Dec 2015
6DegreesIT
  • Built backend modules and third-party API integrations; improved system reliability through refactoring and performance optimisation.
Software Developer
Jun 2011 – Jun 2013
Galaxy Weblinks Ltd
  • Developed backend features, optimised database queries, contributed across the full development lifecycle.
YTEstimator.com
YTEstimator.com
Live — SaaS

Self Project

Designed and launched a production SaaS platform solo — estimation engine, versioned content system, admin panel, blog, and automated publishing workflows. Engineered an AI-powered content generation agent (PHP + REST API + async job queue) decoupled from the request lifecycle.

GitHub Live
PolicyRememberMe
Staging — Insurance

Self Project

Architecting a multi-tenant insurance platform with isolated role-based data access, full policy lifecycle state machine, and audit-ready document storage. Includes AI-assisted data extraction and automated email/SMS renewal triggers.

GitHub
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