About Hassan
Full-stack Software Engineer with 4+ years of experience building scalable SaaS and HR-tech platforms using TypeScript, React, Node.js, and Java. Proven record of owning end-to-end delivery across frontend, backend, cloud infrastructure, and AI-powered workflows. Experienced with serverless AWS architectures, microservices, and event-driven systems. Adept at performance optimization, system design, and cross-functional collaboration in fast-moving product environments.
English
Native or bilingual
Remote only
Primarily works remotely
Experience
- Trustnook Inc.Technical LeadDIGITAL AND ITMarch 2026 - Today (5 months)• • Founding technical engineer for a pre-launch property management SaaS targeting Canadian and US markets, with sole ownership of architecture, implementation, and delivery across all six platform modules including lease agreements, e-signatures, rent tracking, and compliance workflows.• • Designed a modular monolith architecture (Shopify-inspired) with six strictly bounded modules — each a theoretical microservice extraction point — pushing back on the client's initial microservices preference to avoid premature operational complexity.• • Designed a multi-party agreements module with per-role signature sequencing and consent state tracking across tenants — implementing an in-house e-signature pipeline (pdf-lib → node-signpdf) covering runtime pre-filling of government lease templates, in-app viewing, signature capture, and cryptographic locking of finalized documents, avoiding per-envelope third-party costs entirely.• • Built a documents module supporting runtime pre-filling of government-issued lease templates, in-app PDF viewing, and version-controlled template management.• • Designed a multi-schema PostgreSQL database with append-only audit log tables enforced via shared DB trigger functions, soft deletes, and snapshotted lease amounts at signing for immutable financial records.• • Implemented a multi-provider auth system (email/password, Google OAuth, Apple OAuth, SMS OTP) using AWS Cognito, with a PostConfirmation Lambda trigger ensuring guaranteed server-side user sync and keeping all credential logic outside the application layer.• • Enforced module boundary contracts at the import, query, and schema layers — ESLint import restrictions, no cross-module JOIN queries, and no Postgres FK constraints across schema boundaries — preventing the boundary erosion that typically undermines monolith codebases at scale and preserving each module as a clean microservice extraction point.
- Symply SoftwareSenior Software Engineer (Consultant)July 2024 - Today (2 years and 1 month)• • End-to-end technical owner for ATS, hiring and payroll platform features, from solution design and stakeholder alignment through implementation, deployment, and optimization.• • Built and optimized React and React Native applications, delivering UI-heavy workflows while reducing bundle size and deployment artifacts.• • Developed payroll features including multi-method salary disbursement and employee bank account management, handling sensitive financial data with strong emphasis on data integrity and security.• • Led CI/CD and performance optimizations, reducing CircleCI execution time by ~40% and improving critical backend API latency by ~70%.• • Designed and implemented scalable Node.js services with PostgreSQL, owning schema design, migrations, complex query optimization, and transaction-safe data mutations.• • Led design and implementation of AI-powered hiring workflows including candidate screening and interview analysis, with end-to-end ownership of LLM systems, evaluation frameworks, and third-party integrations.• • Authored and maintained AWS serverless infrastructure using CDK/SST, optimizing stacks within a serverless-first architecture.• • Designed a shared communication platform supporting in-app messaging, email, and notifications, reused across backend and internal systems.• • Drove backend v1-to-v2 migration and code quality initiatives focused on modularity and SOLID principles; regularly conducted code reviews and design discussions.• • Owned production reliability and cost efficiency, proactively optimizing AWS Lambda usage and deployment artifacts to reduce operational overhead.
- WisestepFull Stack EngineerMarch 2022 - June 2024 (2 years and 3 months)Hyderabad, Telangana, India• • Led architecture and delivery of a configurable analytics and data visualization platform with customizable dashboards and shareable insights.• • Built high-performance REST APIs within a microservices architecture for large-scale data aggregation using PostgreSQL, TimescaleDB, and Elasticsearch.• • Designed an internal request orchestration layer in Spring Boot to aggregate multiple analytics operations behind a single API call, reducing client-server round trips and improving response times by ~75%.• • Integrated Google Meet and Microsoft Teams APIs, implementing OAuth 2.0-based authorization for seamless calendar-driven video conferencing.• • Implemented Kafka-based event-driven communication for reliable analytics processing and system decoupling.• • Developed scalable frontend components and data-heavy workflows (advanced search, filtering, exports) in React.• • Implemented automated testing across the stack using Jest, Mocha, and Cypress.
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Education
- Bachelor of TechnologyZakir Husain College of Engineering and Technology, Aligarh Muslim University2021Bachelor of Technology