Workforce Management SaaS
Architecture to production on web, iOS and Android. Database-level tenant isolation, RBAC + ABAC with six roles, geofenced clock-in, timesheets synced to Xero payroll, and a client portal for attendance and costs.
Open to work · Sydney, NSW
Chandan
Thakur
Full stack software engineer building scalable systems, cloud infrastructure and access control, now studying data science & AI at UTS.
3+years in
production
production
Engineer for the layers everything depends on.
I'm a full stack engineer with 3+ years of experience on scalable architecture, cloud infrastructure and access control: the quiet systems everything else relies on.
At Yubi, a large fintech, I worked on the central authentication and authorisation platform built on RBAC and ABAC. At GFS Group I designed and shipped a multi-tenant SaaS as the sole engineer, from architecture decision records to production on web, iOS and Android.
I'm now doing a Master of Data Science and Innovation at UTS, with a strong interest in MLOps, LLMs and AI agents that hold up in production.
3+Years shipping production software
15mMTTR, down from 4 hours
A$120kInfrastructure savings delivered
15%Identity costs cut with Keycloak
Places I've shipped.
- Mar 2026 — PresentSydney, NSW
Software Engineer
@ GFS Group
- Designed and built a multi-tenant workforce management SaaS as the sole engineer, from architecture through to production release on web, iOS and Android.
- Isolated tenant data at the database level so each organisation's workforce, clients, sites and rules stay fully separate.
- Designed the access control model using RBAC and ABAC, with six roles across four access levels, documented as architecture decision records.
- Built shift management from rostering and geofenced clock-in to timesheet approvals, with approved hours synced to Xero for payroll.
- Delivered paperless onboarding with right-to-work checks and document expiry tracking, plus a client portal showing site attendance and costs.
- Saved about $5,000 a year in software costs and cut admin time spent on rosters and timesheets.
- Apr 2025 — Feb 2026Chennai, India
Senior Software Engineer
@ Yubi
- Part of the platform team behind the central authentication and authorisation service, built on RBAC and ABAC and used by every business unit.
- Built an API monitoring service that cut MTTD and MTTR from four hours to 15 minutes.
- Extended Keycloak with custom integrations for compliance requirements and partner-level access control.
- Simplified user management workflows and admin interfaces, reducing manual work for administrators.
- Took part in the on-call rotation for production incident response.
- Dec 2023 — Mar 2025Chennai, India
Software Engineer
@ Yubi
- Migrated authentication from Auth0 to Keycloak, cutting identity costs by 15%.
- Implemented role-based access control across the platform using Spring Boot and React.
- Migrated services from Ruby on Rails to Spring Boot for better performance and maintainability.
- Supported the move from AWS to GCP and deployed services on Kubernetes with the DevOps team.
- Contributed to INR 7 million (about AUD 120k) in savings through backend and infrastructure optimisation.
- Feb 2023 — Jun 2023Chennai, India
Software Engineer Intern
@ Yubi
- Built microservices in Python and Spring Boot, and REST APIs for loan sanctioning systems backed by MongoDB.
- Used gRPC for communication between distributed services, reducing inter-service latency.
- Jan 2022 — Mar 2022Remote
Frontend Developer Intern
@ FuncBox
- Built interactive web applications with React and Redux, tested with Jest and React Testing Library.
- Jun 2021 — Dec 2021Kathmandu, Nepal
Frontend Developer Intern
@ Everestwalk Groups
- Built responsive React interfaces with Redux and integrated REST APIs.
Education
Master of Data Science and Innovation
University of Technology Sydney
Feb 2026 — Dec 2027 (expected)Education
B.Tech, Computer Science and Engineering
Vellore Institute of Technology
Jul 2019 — Jun 2023Systems with a story.
Central Identity Platform
The central authentication and authorisation service at a large fintech. RBAC and ABAC at the core, with custom Keycloak extensions for compliance and partner-level access control.
API Observability Service
An API monitoring service that cut mean time to detect and resolve production incidents from four hours to fifteen minutes across the platform.
AI & Data Explorations
Hands-on work with LLMs and AI agents alongside my Master's, exploring MLOps, model pipelines and where intelligent systems meet production engineering.
Most of this work lives behind company walls. Public code is on GitHub ↗
What I reach for.
Languages
JavaPythonJavaScriptSQLRuby
Frameworks
Spring BootReactNext.jsRuby on RailsReduxgRPCREST APIs
Security & Identity
KeycloakAuth0RBACABACAuthenticationAuthorisation
Databases
PostgreSQLMySQLMongoDB
Cloud & DevOps
AWSGCPKubernetesGitAPI Monitoring
Data & AI
PandasNumPyscikit-learnTensorFlowMatplotlibLLMsAI Agents
Architecture
Multi-Tenant SaaSMicroservicesDistributed Systems
Certifications
Introduction to Data ScienceAug 2024
Fundamentals of Network EngineeringAug 2024
Front End Web Development with ReactMar 2022
Let's build something good.
Have a role, a project, or want to talk systems, fintech or AI? My inbox is open.
- Phone
- +61 450 092 722
- Based in
- Sydney, NSW, Australia