Ramesh Vantaku

Results-driven Backend Developer with 5+ years of professional experience building production-grade, scalable, and secure server-side systems for fintech and health-tech domains. Deep expertise in Node.js, Express.js, and serverless architectures on AWS (Lambda, DynamoDB, API Gateway, SNS, SQS) and GCP/Firebase (Cloud Functions, Firestore, Cloud Run). Delivered end-to-end features including a wallet system, mobile device locking, RBAC, PDF reporting, and real-time notification pipelines in high-velocity Agile teams.

Strong communicator who bridges technical decisions with business outcomes.

Backend Developer - Tilicho Fintech Pvt Ltd - Visakhapatnam

(2022-09)

Backend Developer - Tilicho Fintech Pvt Ltd - Visakhapatnam

(2022-09 - 2025-06)

Freebird — Lending & Bookkeeping Platform

• Architected and delivered a Wallet System enabling borrowers to manage balances, initiate fund transfers, and view complete transaction histories within the lending platform.
• Built a Mobile Locking Feature in collaboration with the RocketPay team to programmatically restrict device access for overdue borrowers, directly improving repayment discipline.
• Designed and enforced Role-Based Access Control (RBAC) across borrower, lender, and admin personas, ensuring scoped and auditable access to sensitive financial data.
• Developed a PDF Reporting Module to auto-generate transaction summaries, repayment histories, and lending analytics reports for admin and stakeholder review.
• Engineered an automated reminder pipeline using AWS SNS and SQS to deliver SMS and push notification alerts, significantly reducing late payments and improving borrower engagement.
• Integrated payment gateway and KYC provider APIs, implementing retry logic and error handling to maintain reliability on critical transaction flows.
• Implemented Firebase and GCP cost optimisation strategies including Cloud Functions execution tuning, Firestore read/write optimisation, and Cloud Storage lifecycle policies to reduce infrastructure costs.

Backend Developer - Tilicho Fintech Pvt Ltd - Visakhapatnam

(2024-03 - 2025-06)

SmartLife Health — Health-Tech

• Designed and developed a scalable backend for a remote patient health monitoring platform covering vitals tracking, appointment scheduling, and clinical report generation.
• Built and documented RESTful APIs for health data management with JWT-secured endpoints, enabling seamless integration with web and mobile clients.
• Implemented Role-Based Access Control (RBAC) with distinct permission scopes for patients, doctors, and administrators, ensuring secure and compliant data access.
• Generated on-demand PDF health reports consolidating patient vitals, medical history, and doctor notes for clinical and administrative review.
• Integrated third-party health APIs and Firebase Cloud Messaging to deliver real-time critical health alerts via SMS and push notifications.
• Enforced HIPAA-aligned data handling practices including field-level encryption and audit logging for sensitive health records.

Backend Developer - Tilicho Labs LLP - Visakhapatnam

(2020-08 - 2022-09)

Backend Developer - Tilicho Labs LLP - Visakhapatnam

(2022-03 - 2022-09)

Freebird

• Implemented auto-reminder feature for the lending bookkeeping app using SMS and push notifications, improving borrower engagement and reducing late payment occurrences.

Backend Developer - Tilicho Labs LLP - Visakhapatnam

(2020-10 - 2022-03)

DOTO & DotoSports — Sports Quiz Platform

• Developed core features including secure login, OTP verification, Firebase push notifications, KYC system, and real-time chat using Firebase Realtime Database and DynamoDB.
• Contributed to overall app stability and user experience through code reviews and cross-functional collaboration.

Backend Developer - Tilicho Labs LLP - Visakhapatnam

(2020-08 - 2021-09)

Livdemy — Online Music Learning Platform

• Implemented secure mobile OTP login and Firebase push notifications for a live online music education platform.
• Optimised application performance using Memcached caching layer, significantly reducing API response latency.
• Integrated Elasticsearch to power fast, relevant full-text search across courses and instructors.

Master of Science - Geo-Informatics - Andhra University (2017-08 - 2019-05) Visakhapatnam

Bachelor of Science - Civil Engineering - Andhra University (2010-09 - 2014-05) Visakhapatnam