Ridam Jain

Work style

Hybrid, On-site

Contact details — on requestProof of Work — on request

Experience

Backend Engineer (Solo Full-Stack)

Viszapp (Visa Consultation Platform) · Jun 2024 – Jun 2026

Not yet confirmed

Built the entire platform end-to-end as the sole engineer, owning a primarily Node.js and Express backend with Spring Boot services for select system APIs, a React frontend, and a PostgreSQL plus Redis data layer; platform grew to 3,000+ verified users and processed 7,000+ visa applications and 1,100+ paid orders over 24 months.
Integrated Razorpay and Cashfree payment gateways for order checkout, refunds, and settlement reconciliation, including webhook handling and idempotent retry logic to eliminate duplicate-charge risk.
Designed an automation pipeline for itinerary and cover-letter generation using Cloudflare Workers AI for multimodal capability, with Redis caching on prompt-template hits to cut per-document generation cost and latency on repeat requests.
Built a calendar API layer on top of Google Calendar that auto-created consultant-and-client meeting invites at the moment of order placement, eliminating manual scheduling work for the customer-success team.
Implemented per-IP, per-route rate limiting in Node.js with Redis-backed counters and configurable burst limits, protecting public endpoints from scraping and abuse.
Deployed Spring Boot and Node.js services as Docker containers on Digital Ocean Droplets, owning environment isolation, log aggregation, and the zero-downtime restart workflow.

Software Engineer

Postree POS (Abmiro Solutions Pvt. Ltd.) · Jan 2023 – May 2024

Not yet confirmed

Profiled the Postree reporting workload, redesigned database indexes, and rewrote the worst N+1 query patterns, cutting response time on the slowest dashboard endpoints by more than 50% across 160+ paid restaurants and cafes in Ireland and the EU processing 10K+ daily transactions.
Integrated Viva Payments terminal API end-to-end into the POS, covering payment collection, refunds, daily settlement reports, and per-terminal reconciliation across the live restaurant network.
Built an offline voucher management system supporting partial redemption, expiry rules, and a full audit trail, used to track 5,000+ monthly voucher transactions.
Shipped the GreenTil QR-based e-invoicing system, replacing paper receipts with scan-to-view bills across participating restaurants and eliminating the bulk of printed-invoice volume.
Owned client-facing production bug triage during CEST hours, remoting into client machines to reproduce live issues on production data, pushing hotfixes, and contributing to the support-engineering playbook.

Java Developer (Part-time, R&D)

Langboot, Stealth-mode Research · Jan 2023 – Jan 2023

Not yet confirmed

Researched and evaluated open-source NLP and prompt-orchestration repositories to inform the design of Langboot, a private R&D effort building a LangChain-equivalent library for Java and Spring Boot, collaborating asynchronously with an international team of 5 on core modules for prompt templating and pipeline composition.

Frontend Intern

Novus Logics, Ahmedabad · Jan 2019 – Jan 2019

Not yet confirmed

Shipped multiple small single-page application projects with REST API integrations, including an IFSC-code lookup tool.

Android Intern

Cosaia Pvt. Ltd., Ahmedabad · Jan 2019 – Jan 2019

Not yet confirmed

Built a post-discharge patient-feedback Android application for a major hospital, capturing structured feedback from 1,000+ daily discharged patients to feed clinical-quality and service-improvement reviews.

Skills 0 proven through work

Also works with

Android App PublishingMobile Application DevelopmentAndroid Studio UsageEnd-to-End System UnderstandingRapid Technology OnboardingAdaptabilityTaking OwnershipProject Status CommunicationWork Planning and PrioritizationStructured Work ApproachAgile MethodologyLangChain Framework UsageAI-Assisted DevelopmentArtificial Intelligence FundamentalsMachine Learning ApplicationTechnical Documentation ReadingTeamworkOpen Source ContributionJava DevelopmentLLM Application IntegrationSpring BootFramework DevelopmentInternational Team CollaborationInformation ResearchTechnical TroubleshootingDatabase Query OptimizationProduct Improvement ResearchBug FixingProduct DevelopmentInventory Management System DevelopmentAPI IntegrationPayment Gateway IntegrationOrder Management System DevelopmentPOS Retail Application DevelopmentProblem SolvingSecure Data HandlingUser FeedbackData CollectionApplication Performance OptimizationSecurity ArchitectureData ModelingRequirements AnalysisAppointment Scheduling Feature DevelopmentInfrastructure ManagementBackend DevelopmentFront-end DevelopmentSaaS Platform Development

Proof of Work

Ridam shares this with people who ask. You'll hear back either way.

Education

Bachelor, Computer Applications

GLS University, FCAIT · 2018 — 2021

Links

linkedin.com/in/ridam-jain-9b8b7817b

Projects

Book Resell Platform

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Smart Voting Contract

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Contact details

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