AS
AboutWorkStackContact
Let's build
Senior Software Engineer | Backend-heavy full stack

AbubakarSohail

I design production systems with the sharp end covered: APIs, data flows, cloud deployments, AI workflows, and frontends that feel fast enough to trust.

View workResume
Abubakar Sohail
Senior software engineerReliable systems for ambitious products.

Backend, AI, cloud, product delivery.

  • System architecture
  • Multi-tenant SaaS
  • Production AI
  • Performance
NodeRailsReactAWSAINodeRailsReactAWSAI
About

Backend-Focused Full Stack Engineer

Building production-scale systems for startups, SaaS companies, marketplaces, and international teams

I'm Abubakar Sohail, a Senior Software Engineer, focused on backend-heavy full stack products for SaaS, marketplace, recruitment, HR, and automotive platforms.

My work centers around API-first architectures, GraphQL and REST services,microservices, and performance optimization in production systems. At Devsinc, I help architect multi-tenant platforms, reduce latency, and ship features used by international clients.

I also integrate AI/LLM workflows, third-party APIs, and Python/FastAPI data pipelines while keeping systems observable, deployable, and supportable.

4
Years Experience
20+
Projects Delivered
1000s
Users Served
30%
Avg. Perf Gains

Full Stack Developer for Startups, SaaS & Product Companies

Backend Systems

Scalable APIs, microservices, and data pipelines that handle high loads reliably

Full Stack Delivery

End-to-end ownership from system design to deployment with cohesive experiences

Performance

Track record of 20-30% response time improvements through optimization

Cloud & DevOps

AWS, Docker, ArgoCD, Datadog, and CI/CD pipelines for reliable deployments

UI/UX

Creative user interfaces that enhance user experience and engagement

AI/ML

RAG pipelines, LLM integrations, automation workflows, and analytics

Current Focus

Building production AI/LLM integrations, RAG pipelines, backend automation, and distributed systems that can be monitored, debugged, and evolved by real product teams.

View My Experience
Experience

Where I've Worked

A track record of building high-performance web applications and scalable systems for international clients

Senior Software Engineer

Devsinc
2023 - Present
Hybrid | Able to work across timezones
  • Architected backend systems for multi-tenant platforms serving thousands of international users
  • Built high-performance REST and GraphQL APIs with NestJS, Express.js, and Apollo, improving response times by 20-30%
  • Integrated AI/LLM workflows and automation pipelines for data-driven features
  • Built Python/FastAPI microservices for ETL pipelines that ingest, transform, and process external data sources
  • Troubleshot production issues across application, database, and infrastructure layers to improve reliability
  • Deployed and operated services with Docker, AWS, ArgoCD, and CI/CD pipelines in Linux environments
  • Mentored junior engineers and led a team of junior developers through feature delivery, code reviews, and debugging sessions
  • Participated in and led training sessions for new hires, helping them ramp up on engineering workflows and project standards
Node.jsTypeScriptNestJSExpress.jsPythonFastAPIRuby on RailsPostgreSQLAWSDockerArgoCDGraphQL

Software Engineer

Technocares
2023
Onsite
  • Developed full-stack web applications using Node.js, React.js, AngularJS, and C#
  • Assisted in debugging and stabilizing production systems by reproducing issues and implementing fixes
  • Optimized frontend performance, reducing UI loading times by 20%
  • Contributed to backend API development and data flow architecture improvements
Node.jsReact.jsAngularJSC#.NET

Freelance Software Engineer

FiverrFreelance
2020 - 2022
Remote
  • Delivered 20+ full-stack applications using Node.js, React.js, and Python
  • Built backend services handling authentication, integrations, and data processing
  • Managed projects end-to-end, including deployment and client support
Node.jsReact.jsPythonMongoDBPostgreSQL

Education

Bachelor of Science in Computer Science

University of the Punjab - PUCIT

IELTS C1 (English)
View My Projects
Work

Selected systems, built to move

Client and product work across marketplaces, recruitment, HR, automotive platforms, analytics pipelines, and AI workflows.

Tr
01
Client Project

TrueCar

A multi-tenant automotive marketplace platform delivering real-time pricing and inventory from local dealerships through a distributed microservices architecture.

Serving millions of car buyers with upfront, transparent pricing
ReactNext.jsRuby on RailsGraphQLPostgreSQLRedis
Ta
02
Client Project

Talivity

A scalable marketplace platform for recruitment software solutions with CRM integrations and advanced campaign management.

Unified recruitment tools ecosystem with seamless data synchronization
Node.jsExpress.jsReactTypeScriptPostgreSQLHubSpot API
Em
03
Client Project

Employer Reputation Navigator

An LLM-powered analytics service that processes unstructured data from multiple sources to generate actionable market insights for recruitment vendors.

Enabled real-time vendor reputation tracking across the recruitment marketplace
FastAPIPythonAWS LambdaOpenAIGeminiSnowflake
VU
04
Client Project

VU Custom

A custom product personalization platform with real-time 2D and 3D previews plus fulfillment-ready production automation.

Turned personalized designs into production-ready order data
Ruby on RailsReactJavaScript3D PreviewOrder AutomationPostgreSQL
Ma
05
Client Project

MapleHR

A comprehensive multi-tenant HR management platform handling employee management, organizational hierarchies, claims, tickets, and leave requests.

Streamlined HR operations for enterprises with complex organizational structures
Ruby on RailsReactPostgreSQLRedisMicroservices
Stack map
Skills

Technical Expertise

Full stack developer proficient in TypeScript, React, GraphQL, PostgreSQL, AWS, Docker, ArgoCD, and AI integrations

Languages & Frontend

Core languages and frontend technologies

  • JavaScript (ES6+)
  • TypeScript
  • Python
  • Ruby
  • React.js
  • Next.js
  • Redux
  • Material UI
  • Inertia.js
  • Tailwind CSS
  • React Query
20+
Technologies
5
Domains
4
Years

Backend-Focused Full Stack Engineer

Areas of Deep Expertise

API-First Architecture

Scalable REST & GraphQL APIs, microservices, and event-driven systems for high loads

Database Optimization

Query optimization, indexing, and Redis caching for performance-critical applications

Cloud Infrastructure

AWS services, containerization with Docker, and CI/CD for reliable deployments

AI/LLM Integration

OpenAI and Gemini APIs for sentiment analysis and intelligent automation

Let's Talk
Blog

Engineering Notes

Practical notes on backend systems, AI workflows, architecture, and career lessons from production work

Loading posts...

Contact

Let's Build Something Great

Available for remote and timezone-friendly engineering work with startups, SaaS companies, and international teams.

Send a message

Quick Links

GitHub
LinkedIn
abubakarsohail83@gmail.com

Availability

Open to remote roles globally and onsite roles in Pakistan(National) and in the UK(Full-time right to work)

Resume

Download CV

© 2026 Abubakar Sohail. All rights reserved.

Senior Software Engineer