I’m Abdul Hayan, a senior full-stack engineer with 6+ years building SaaS products end to end—from PostgreSQL schema design to Django/FastAPI backend services and React/Next.js user experiences. I love shipping production-ready features, especially LLM-powered capabilities that integrate model APIs, prompt design, and retrieval pipelines grounded in live product data.

ABDUL HAYAN

I’m Abdul Hayan, a senior full-stack engineer with 6+ years building SaaS products end to end—from PostgreSQL schema design to Django/FastAPI backend services and React/Next.js user experiences. I love shipping production-ready features, especially LLM-powered capabilities that integrate model APIs, prompt design, and retrieval pipelines grounded in live product data.

Available to hire

I’m Abdul Hayan, a senior full-stack engineer with 6+ years building SaaS products end to end—from PostgreSQL schema design to Django/FastAPI backend services and React/Next.js user experiences. I love shipping production-ready features, especially LLM-powered capabilities that integrate model APIs, prompt design, and retrieval pipelines grounded in live product data.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Fluent

Work Experience

Senior Full-Stack Engineer at Search Atlas
December 1, 2025 - Present
Owned 20+ features across PostgreSQL, Django REST Framework, and Next.js, reshaping specs with product before building. Developed AI content generation workflows producing 10k+ SEO-optimized drafts and metadata monthly. Improved Django REST Framework performance by offloading heavy AI and audit jobs to Celery, reducing p95 response time by 65%. Built responsive UIs from Figma designs and improved Lighthouse scores to 90+ core web vitals. Integrated Google Search Console, Ads, and Business Profile APIs via rate-limited pipelines to sync 1M+ rows per day with 99.9% success. Drove DevOps using Docker, AWS (ECS, Lambda, S3, SQS, RDS, CloudWatch), and CI/CD to reduce deploys to under 10 minutes; used Sentry and Grafana to cut MTTC to under 5 minutes.
Senior Software Engineer at Devsinc
May 1, 2023 - November 30, 2025
Led full-stack delivery using Python (Django), Node.js/NestJS, React, and PostgreSQL, improving product outcomes like lowering bounce rate by 20%. Migrated a monolith to 8 domain-driven microservices, cutting release cycles from 2 weeks to 2 days with independent deploys. Architected AWS autoscaling infrastructure (Docker, Kubernetes) to support 3x traffic growth while maintaining 99.9% uptime. Designed multi-layer Redis caching (TTL, write-through, lock-based) to reduce external calls by 60% and bring p95 latency from 800ms to 180ms. Built ETL pipelines over 5M+ records integrating 6 systems (Zenoti, ClubReady, Kite, Zapier, HubSpot). Tuned PostgreSQL/MongoDB/DynamoDB with indexing, partitioning, and read replicas to cut slow queries by 70% and remove N+1 hotspots; strengthened observability and raised test coverage to 85% using pytest and reviews.
Senior Backend Engineer at A technology company providing solutions for remote work
May 1, 2023 - Present
Remote senior backend engineer focusing on migrating to microservices, building scalable REST APIs with Node.js and Nest.js, optimizing CI/CD with GitHub Actions, implementing Redis caching and RabbitMQ for heavy background tasks, and ensuring high availability during peak traffic.
Full Stack Engineer at A technology company providing solutions for remote work
May 1, 2023 - September 10, 2025
Migrated a large legacy React application to Next.js using an incremental adoption strategy; improved SEO and reduced first contentful paint by 45%. Designed domain-focused microservices with Next.js and message-driven integration patterns to deliver AI-powered personalization. Redesigned monolithic UI into modular React components; introduced Redis caching and asynchronous background processing with RabbitMQ; built RESTful endpoints and CRUD operations to streamline backend processes.
Full Stack Engineer at letsremotify
May 1, 2023 - September 10, 2025
Migrated a legacy React app to Next.js to deliver a modern, secure UI with improved SEO and 45% faster first contentful paint. Designed domain-focused microservices with Nest.js and message-driven integration patterns for real-time booking availability and secure transaction processing. Refactored monolithic UI into modular, reusable React components to support responsive design across customer-facing booking systems and administrative dashboards. Implemented Redis caching and RabbitMQ for performance and reliable payment flows. Built and hardened REST APIs using Python and Node.js with security measures to support account creation and online payments, maintaining >99.9% availability. Deployed on Vercel and Firebase Hosting with atomic deploys and rollbacks.
Senior Backend Engineer at Devsinc
May 1, 2023 - Present
Led migration from a monolithic to a microservices architecture, enhancing scalability and security while reducing deployment time for independent services by 40%. Architected event-driven processing with AWS SNS/SQS/EventBridge to improve throughput by 65%. Implemented autoscaling for ECS and Lambda with provisioned concurrency, enabling 3x traffic spikes without degradation. Optimized AWS infra and caching to reduce page load times by 35%. Established CI/CD pipelines (GitHub Actions, GitLab CI) with automated tests and canary deployments, shortening releases by 60%. Built fault-tolerant ETL pipelines, improving data consistency and reducing failures by 95%.
Full Stack Engineer at LetsRemotify
May 1, 2023 - September 10, 2025
Migrated a large legacy React application to Next.js, delivering a modern, secure UI with improved SEO and reducing first contentful paint by 45%. Designed domain-focused microservices with Nest.js and message-driven integration for real-time booking availability and secure transaction processing, increasing user engagement by 25%. Refactored monolithic UI into modular React components to support responsive design across customer booking systems and admin dashboards, reducing duplication by 60% and improving maintainability. Implemented Redis caching and RabbitMQ-based asynchronous processing to optimize performance, cutting median API latency from 1.8s to under 500ms. Built and hardened REST APIs with Python and Node.js with security measures including rate-limiting, circuit breakers, and autoscaling, maintaining >99.9% availability during peak traffic. Deployed on Vercel and Firebase with atomic deploys and rollbacks to ensure near-zero downtime. Developed REST endpoints and CRUD ope
Senior Backend Engineer at Devsinc
May 1, 2023 - Present
Led migration from a monolithic to microservices architecture, improving scalability and deployment speed by 40%. Architected event-driven workloads using AWS SNS, SQS, and EventBridge to process tasks in parallel, boosting throughput by 65%. Implemented autoscaling across ECS services and serverless Lambda functions with capacity-based policies and provisioned concurrency, enabling the platform to absorb 3x traffic spikes without degradation. Applied CORS, Redis caching, and targeted sharding to reduce read/write contention, lowering API latency by 30% and improving p95 response times. Optimized AWS infrastructure (EC2 sizing, caching, and CDN) to reduce page load times by ~35%. Built CI/CD pipelines with GitHub Actions and GitLab CI, introducing automated tests, staging pipelines, and canary deployments, cutting release cycles by 60%. Developed fault-tolerant ETL pipelines to synchronize millions of records, improving data consistency and reducing failures by 95%.
Full Stack Engineer at letsremotify
May 1, 2023 - September 10, 2025
Migrated a large legacy React application to Next.js to deliver a modern, secure user interface with improved SEO and reduced first contentful paint by 45%. Designed domain-focused microservices with Nest.js and message-driven integration patterns, incorporating data synchronization for real-time booking availability and secure transaction processing, which increased user engagement by 25%. Refactored a monolithic UI into modular, reusable React components to support responsive design across both customer-facing booking systems and administrative dashboards, reducing duplication by 60% and improving maintainability. Implemented Redis caching and asynchronous background processing with RabbitMQ to optimize system performance and secure payment transaction flows, reducing median API latency from 1.8s to under 500ms. Built and hardened REST APIs using Python and Node.js with robust security measures—including rate-limiting, circuit breakers, and autoscaling—to support secure customer
Senior Backend Engineer at Devsinc
May 1, 2023 - Present
Led migration from a monolithic to microservices architecture, improving scalability and security while reducing deployment time for independent services by 40%. Architected event-driven systems using AWS SNS, SQS, and EventBridge to process workloads in parallel, boosting throughput by 65%. Implemented autoscaling across ECS services and serverless Lambda functions with capacity-based scaling policies and provisioned concurrency, enabling the platform to absorb 3x traffic spikes without service degradation. Reduced read/write contention and improved API performance by applying CORS to critical flows, introducing Redis caching and targeted sharding strategies, lowering average query latency by 30% and improving p95 response times. Optimized AWS infrastructure—including EC2 sizing, caching, and CDN utilization—to reduce page load times by approximately 35%. Implemented CI/CD pipelines with GitHub Actions and GitLab CI, adding automated tests, staging pipelines, and canary deployment
Full Stack Engineer at Lets Remotify
May 1, 2023 - August 13, 2025
Worked at a technology company providing solutions for remote work. Migrated a large legacy React application to Next.js using an incremental adoption strategy, improving SEO and reducing first contentful paint by 45%. Designed domain-focused microservices with Nest.js and message-driven integration patterns to deliver AI-powered personalization, increasing user engagement by 25%. Refactored monolithic UI into modular, reusable React components, enforced design tokens, and reduced duplication by 60%, improving maintainability and developer velocity. Introduced Redis caching and asynchronous background processing with RabbitMQ to offload heavy work, cutting median API latency from 1.8 seconds to under 500 milliseconds. Built and hardened REST APIs in Python and Node.js with rate-limiting, circuit breakers, and autoscaling; maintained >99.9% availability during peak traffic. Managed deployments on Vercel and Firebase Hosting, executing atomic deploys and rollbacks to maintain near-zero d
Senior Back End Engineer at Devsinc
May 1, 2023 - Present
Worked at a software development firm focused on delivering high-quality applications. Led migration from monolithic to microservices, resolving scalability bottlenecks and reducing deployment time for independent services by 40%. Architected and deployed event-driven systems using AWS SNS, SQS, and EventBridge to process workloads in parallel, improving throughput by 65%. Introduced autoscaling across ECS services and serverless Lambda functions with capacity-based scaling policies, enabling the platform to absorb 3x traffic spikes without service degradation. Reduced read/write contention and improved API performance by applying CQRS for critical flows, introducing Redis caching and targeted sharding, lowering average query latency by 30% and improving p95 response times. Tuned AWS infrastructure (EC2 sizing, caching, CDN) and optimized memory usage, reducing page load times by approximately 35%. Implemented CI/CD with GitHub Actions and GitLab CI, adding automated tests, staging pip
Software Engineer at letsremotify
May 1, 2023 - August 6, 2025
Modernized a legacy React.js codebase by transitioning to Next.js with server-side rendering, achieving a 45% improvement in initial page load time and enhanced SEO. Integrated AI-driven personalization features using Nest.js. Managed deployments on Vercel and Firebase Hosting for continuous delivery. Developed and maintained RESTful endpoints and CRUD operations. Engineered dynamic user interfaces for dashboards, admin panels, and user applications. Refactored UI into modular React components, reducing code duplication by 60%. Coordinated with designers to implement pixel-perfect designs from Figma and Adobe XD.
Senior Full Stack Engineer at Devsinc
May 1, 2023 - Present
Directed the implementation of React best practices, code quality, and Git workflows to accelerate onboarding and team collaboration in a remote environment. Performed detailed code reviews reducing post-release defects by 15%. Engineered robust backend solutions integrated with various AWS services, enhancing system performance and scalability. Automated CI/CD pipelines with GitLab and GitHub Actions, reducing deployment time by 60%. Optimized database operations using the CQRS pattern, reducing query execution time by 30%. Developed ETL pipelines for efficient data workflows. Crafted responsive and user-friendly interfaces with cross-browser compatibility. Collaborated with cross-functional teams to define requirements and meet project deadlines. Implemented SSR and SSG with Next.js to improve page load speeds by 40%, and built reusable component libraries that decreased frontend development time by 30%.
Full-Stack Engineer at letsremotify
October 1, 2021 - May 31, 2023
Delivered 30+ product features end to end with product and design on 2-week release cycles. Migrated a 50+ page React app to Next.js with zero downtime, reducing load times by 45% and improving organic traffic. Built Python and Node.js backends serving 40+ REST endpoints with maintainable API architecture. Implemented event-driven serverless workflows using AWS SQS and EventBridge handling 100k+ async jobs per day. Built CI/CD pipelines with GitHub Actions and GitLab CI including automated testing and blue-green deploys, cutting release time by 60%. Shipped real-time features (WebSockets, SSE) for 5k+ concurrent users and provided IaC with AWS CDK.
Associate Software Engineer at Fasi Soft
October 1, 2021 - September 10, 2025
Crafted user-facing features and backend endpoints across the MERN stack, decomposed API endpoints, and contributed to modernizing backend processes. Worked on improving application reliability and performance in a growing team.
Associate Software Engineer at Fasi Soft
October 1, 2021 - September 10, 2025
Crafted user-facing features and backend endpoints across the MERN stack, optimizing responsiveness and data handling for booking interfaces. Decomposed API responsibilities with service boundaries to enable independent scaling for high-load components, strengthening security and maintainability. Modernized JavaScript to ES6+ with linting and modular patterns, reducing technical debt while fortifying code for secure operations. Designed dashboards, admin panels, and customer-facing booking applications to enhance user experience.
Associate Software Engineer at Fasi Soft
October 1, 2021 - September 10, 2025
Crafted user-facing features and backend endpoints across the MERN stack, focusing on responsive, secure booking interfaces. Decomposed API responsibilities and established service boundaries to enable independent scaling of high-load components, enhancing security and simplifying deployments. Modernized JavaScript to ES6+ with linting and modular patterns, reducing technical debt by 40% and improving code maintainability. Designed interactive dashboards and admin panels to improve user experience for booking solutions.
Associate Software Engineer at Fasi Soft
October 1, 2021 - September 10, 2025
Crafted user-facing features and backend endpoints across the MERN stack, optimizing responsiveness and incorporating secure data handling for booking interfaces. Decomposed API responsibilities and introduced service boundaries to enable independent scaling for high-load components, enhancing system security and simplifying deployments for booking solutions. Modernized the JavaScript codebase to ES6+ with linting and modular patterns, reducing technical debt while fortifying code for secure, responsive operations. Designed interactive user interfaces for dashboards, admin panels, and customer-facing booking applications, enhancing user experience and adhering to user-centered design principles.
Associate Software Engineer at Fasi Soft
October 1, 2021 - August 13, 2025
Worked at a software development company specializing in innovative tech solutions. Crafted user-facing features and backend endpoints across the MERN stack and optimized critical server endpoints and client bundles to improve responsiveness and user engagement. Decomposed API responsibilities and introduced service boundaries to enable independent scaling for high-load components and simplify deployments. Modernized the JavaScript codebase to ES6+, applied linting and modular patterns, cutting technical debt by 40% and improving onboarding. Designed dynamic UIs for dashboards, admin panels, and user-facing applications, enhancing user experience and interface responsiveness.
Associate Software Engineer at Fasi Soft
October 1, 2021 - August 6, 2025
Built full-stack web applications using the MERN stack, reinforcing full-stack development expertise. Developed RESTful APIs and dynamic front-end interfaces. Managed and maintained React and Node.js applications, ensuring functionality and performance. Implemented key features enhancing user experience aligned with modern standards. Upgraded codebase to modern JavaScript (ES6+), reducing technical debt by 40%. Enhanced application memory performance to reduce load times for smoother user experience.

Education

Bachelor at University of Engineering and Technology, Lahore
October 14, 2018 - May 31, 2023
B.S. in Computer Science at University of Engineering and Technology (UET) Lahore
January 11, 2030 - September 22, 2026

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Professional Services, Financial Services, Media & Entertainment, Computers & Electronics