Backend Engineer with deep experience in Node.js and Python, specializing in scalable API design, microservices, and cloud-native architectures. Over the past five years, I have built and optimized distributed backend systems using PostgreSQL, MongoDB, Docker, and Kubernetes, deploying production workloads on AWS and Azure. I have hands-on experience integrating AI/ML models (TensorFlow, PyTorch) into production platforms, designing secure authentication and authorization flows, and implementing CI/CD pipelines to support rapid, reliable delivery. My work includes infrastructure automation with Terraform, serverless integrations with AWS Lambda, and building high-availability systems using container orchestration.

Zashheer Abbas Khan

Backend Engineer with deep experience in Node.js and Python, specializing in scalable API design, microservices, and cloud-native architectures. Over the past five years, I have built and optimized distributed backend systems using PostgreSQL, MongoDB, Docker, and Kubernetes, deploying production workloads on AWS and Azure. I have hands-on experience integrating AI/ML models (TensorFlow, PyTorch) into production platforms, designing secure authentication and authorization flows, and implementing CI/CD pipelines to support rapid, reliable delivery. My work includes infrastructure automation with Terraform, serverless integrations with AWS Lambda, and building high-availability systems using container orchestration.

Available to hire

Backend Engineer with deep experience in Node.js and Python, specializing in scalable API design, microservices, and cloud-native architectures. Over the past five years, I have built and optimized distributed backend systems using PostgreSQL, MongoDB, Docker, and Kubernetes, deploying production workloads on AWS and Azure.

I have hands-on experience integrating AI/ML models (TensorFlow, PyTorch) into production platforms, designing secure authentication and authorization flows, and implementing CI/CD pipelines to support rapid, reliable delivery. My work includes infrastructure automation with Terraform, serverless integrations with AWS Lambda, and building high-availability systems using container orchestration.

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Experience Level

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

English
Fluent
Urdu
Advanced
Panjabi, Punjabi
Advanced
Hindi
Intermediate

Work Experience

Full-Stack & DevOps Engineer (Consultant) at OXAR AI
May 31, 2025 - October 7, 2025
Full-stack development and AI integration: built and maintained web applications using React.js and Django, integrating AI models and designing scalable RESTful APIs. Created reusable UI components with React.js, HTML5, CSS3, and JavaScript to ensure cross-browser compatibility. Cloud infrastructure & AI deployment: collaborated with AI/ML engineers to deploy and maintain ML/DL models (TensorFlow, PyTorch) with high availability, scalability, and security on AWS. Agile practices: worked with cross-functional teams (AI, ML, BE, FE, Design, Product) in a SAFe/Scrum environment, following coding, testing, and version-control best practices (Git).
Backend Web Developer (Consultant) at Helpicon AB
September 30, 2023 - October 7, 2025
Designed and developed backend services within a microservices architecture, optimizing performance and scalability. Worked with Prisma for efficient data management and implemented dynamic filtering and in-house libraries to enhance the codebase. Cloud & infrastructure automation: managed AWS infrastructure with Terraform and Jenkins for smooth deployments; used S3 and AWS Cognito for secure storage and authentication; Dockerized services and used Kubernetes for orchestration. System integration & UX: integrated Agora for chat/VoIP and social logins via AWS Lambda, improving user experience; ensured security, reliability, and cross-environment portability through robust DevOps solutions.
Full Stack Web Developer (Consultant) at Webbmi AB
December 31, 2022 - October 7, 2025
Delivered end-to-end features for healthcare, e-commerce, dashboards, and SaaS apps using Node.js/TypeScript (Express) and Python/Django + DRF with React/Vue frontends. Designed REST APIs with RBAC/auth (sessions/JWT), structured error handling, pagination/filtering, and input validation. Built responsive UIs with React/Vue and Bootstrap; created reusable form/data components and KPI/analytics views. Integrated Nordic services (BankID, Swish, Klarna, Swedbank Pay, Stripe, PayPal) and PostNord hooks. Data layer with SQL/SQLite and MongoDB; authored migrations, indexes, and caching. Deployed on AWS (S3, CloudFront, EC2/containers) with environment configs, secrets, logging, and monitoring. Implemented CI/CD pipelines, OpenAPI docs, and unit/integration tests. Enforced security hygiene (webhook signature checks, rate limiting, IAM).
Associate Engineer (Part Time) at Pakistan Ordinance Factories
August 31, 2018 - October 7, 2025
Electronics system development and maintenance: assisted in design, development, testing, troubleshooting, and repair of electronic circuits and systems. Supported assembly, installation, and maintenance of electronic components to ensure smooth operation. Participated in quality control and collaboration with senior engineers to resolve technical issues.
Full-Stack & DevOps Engineer (Consultant) at OXAR AI
May 1, 2025 - October 19, 2025
Full-Stack Development & AI Integration: built and maintained web applications using React.js, Node.js, and Django; integrated AI models and designed scalable RESTful APIs. Collaborated on cloud infrastructure and AI model deployment on AWS; ensured high availability, security, and scalability. Worked in an Agile environment (SAFe/Scrum) with cross-functional teams and practiced best coding, testing, and version-control workflows.
Backend Web Developer (Consultant) at Helpicon AB
September 1, 2023 - October 19, 2025
Designed and developed backend services within a microservices architecture using Node.js; optimized performance and scalability. Implemented dynamic filtering systems and in-house libraries. Automated cloud infra with Terraform and Jenkins; secured file storage and authentication via AWS S3 and Cognito; Dockerized services and used Kubernetes for scalable orchestration. Integrated Agora chat/VoIP and social logins via AWS Lambda; emphasized security, reliability, and cross-environment portability.
Full-Stack Web Developer (Consultant) at Webbmi AB
December 1, 2022 - October 19, 2025
Delivered end-to-end features for health care, e-commerce, custom dashboards, and SaaS apps using Node.js/TypeScript (Express) and Python/Django; built REST APIs with RBAC/ JWT authentication, error handling, pagination, and input validation. Created responsive UIs with React/Vue and Bootstrap; integrated Nordic payment solutions (BankID, Swish, Klarna, Stripe, PayPal) and PostNord services; implemented data access via SQL/SQLite and MongoDB; deployed on AWS with containers, CI/CD pipelines, and monitoring.
Full-Stack Web Developer (Freelancer) at Self-Employed / Freelancer
January 1, 2018 - Present
Freelance full-stack development on diverse web projects including health care portals, e-commerce sites, dashboards, and SaaS apps. Built back-ends with Node.js, Django, Flask, and front-ends with React.js and Vue.js; used AWS and MongoDB/PostgreSQL; created reusable components and ensured performance and security.
Associate Engineer (Part-Time) at Pakistan Ordnance Factories
August 31, 2018 - October 19, 2025
Electronics-focused role involving design, development, testing, troubleshooting, and repair of electronic circuits and systems; supported assembly, installation, and maintenance of electronic components; collaborated with senior engineers to ensure reliable performance.
Full-Stack & DevOps Engineer at OXAR AI
October 1, 2023 - May 1, 2025
Full-Stack Development & AI Integration: Developed and maintained web applications using Vue3, Node.js, Python/Django; integrated AI models; designed scalable RESTful APIs. Built and maintained reusable UI components with React.js, HTML5, CSS3, and JavaScript. Cloud Infrastructure & AI Deployment: Deployed and maintained ML/DL models (TensorFlow, PyTorch) and ensured high availability, scalability, and security of cloud infrastructure on Azure Kubernetes Service using Terraform. Agile Development & Best Practices: Collaborated with cross-functional teams in SAFe/Scrum, following best practices in coding, testing, and version control (Git).
Backend Web Developer (Consultant) at Helpicon AB
December 1, 2022 - September 30, 2023
Backend Development & Microservices: Designed and developed backend services in a microservices architecture using Node.js; optimized performance and scalability. Database work with Prisma for efficient management; implemented dynamic filtering. Cloud & Infrastructure Automation: Managed AWS infrastructure with Terraform and Jenkins; used S3 and Cognito for secure file storage and authentication. Dockerized backend services and implemented Kubernetes for scalable orchestration. System Integration & User Experience: Integrated Agora for chat and VoIP, plus social logins via AWS Lambda; focused on security, reliability, and cross-environment portability.
Full Stack Web Developer (Consultant) at Webbmi AB
August 1, 2020 - December 31, 2022
Worked as a full-stack developer across healthcare, e-commerce, dashboards, and SaaS applications. Delivered end-to-end features using Node.js/TypeScript (Express) and Python/Django with React/Vue3 frontends. Designed REST APIs and RBAC/auth (sessions/JWT), error handling, pagination, and input validation. Built responsive UIs with React/Vue + Bootstrap; created reusable UI components and KPI analytics views. Integrated Nordic services (BankID, payments: Swish, Klarna, Swedbank Pay, Stripe) and PostNord shipping. Managed SQL/SQLite and MongoDB data layers with migrations and caching. Deployed on AWS (S3, CloudFront, EC2/containers); configured CI/CD with Git; produced OpenAPI docs; emphasized unit/integration tests. Security hygiene: webhook signatures, rate limiting, IAM, pre-signed file access, and secrets management. Health care portal (Django/DRF + React) with RBAC; E-commerce revamp (WooCommerce + React widgets); multi-provider payments. SaaS dashboard (Node/TS API + React SPA) wi
Freelancer - Full-Stack Web Developer at Self-Employed
September 1, 2018 - Present
Delivered full-stack web apps across e-commerce, dashboards, HR systems, and SaaS. Built applications using Node.js/TypeScript (Express) and Python/Django with React/Vue3 front-ends. Architected REST APIs with RBAC/JWT, implemented security practices, and performed migrations in SQL/SQLite and MongoDB. Deployed on AWS (S3, CloudFront, EC2/containers) with CI/CD pipelines. Created responsive UIs with Vue/React and Bootstrap; integrated payment gateways and multi-provider payments; built admin dashboards and analytics views. Implemented WordPress-based solutions, WooCommerce, and Shopify plugins where relevant. Delivered SaaS dashboards with multi-tenant data handling, export features (CSV/Excel), and robust data flows.
Associate Engineer (Part Time) at Pakistan Ordnance Factories
June 1, 2017 - August 31, 2018
Electronics systems development & maintenance: Assisted in design, development, testing, troubleshooting, and repair of electronic circuits and systems. Supported assembly, installation, and maintenance of electronic components, ensuring smooth operation. Technical collaboration & quality assurance: Worked with senior engineers; participated in QA measures to ensure reliability and performance. Documentation & safety: Generated technical reports and documentation; adhered to industry standards and safety protocols; ensured a safe working environment.
Full-Stack & DevOps Engineer at Circu City
July 1, 2025 - January 1, 2026
Freelance full-stack and DevOps engineer delivering a scalable e-commerce cloud application with React and Django. Migrated from monolithic to microservices, built backend services and APIs, emphasized modularity, performance, and maintainability. Implemented scalable deployment pipelines, cloud infrastructure on AWS, and secure global content delivery.
Full-Stack & DevOps Engineer (Consultant) at OXAR AI
October 1, 2023 - May 1, 2025
Developed web apps using Vue 3, Node.js, Python/Django, integrating AI models, and designing scalable REST APIs. Built reusable UI components; ensured cross-browser compatibility. Collaborated on deploying ML models on AWS and Kubernetes using Terraform. Implemented Agile practices.
Full-Stack & DevOps Engineer (Freelancer) at Circu City
July 1, 2025 - January 1, 2026
Developed and maintained an e-commerce full-stack cloud application using React and Node.js; migrated from monolith to microservices; built scalable backend services and APIs; implemented CI/CD with GitHub Actions; deployed frontend on S3/CloudFront; managed cloud resources following best practices.
Backend Web Developer (Consultant) at Helicon AB
December 1, 2022 - September 1, 2023
Backend Web Development & Microservices: Implemented backend services within a microservices architecture, optimized performance, and collaborated with Prisma for efficient database management; implemented dynamic filtering systems and in-house common libraries to enhance codebase.
Full-Stack Web Developer at Freelancer
September 1, 2018 - Present
Worked as a full-stack developer on various web projects across healthcare, e-commerce, custom dashboards, and SaaS web applications using Node.js/TypeScript (Express) and Python/Django; delivered end-to-end features, REST APIs, RBAC/auth (sessions/JWT), secure file handling, robust UI development.

Education

Master of Science in Computer Science at Malmö University
August 1, 2024 - October 7, 2025
Bachelor of Science (BS) in Computer Science at University of Wah
September 1, 2017 - August 31, 2021
Diploma of Associate Engineering (DAE) in Electronics at POF Institute of Technology
September 1, 2014 - June 30, 2017
Master of Science - Computer Science at Malmö University
August 1, 2024 - October 19, 2025
Bachelor of Science - Computer Science at University of Wah
January 1, 2017 - January 1, 2024
Diploma of Associate Engineering (DAE) - Electronics at POF Institute of Technology
September 1, 2014 - June 1, 2017
Master of Science in Computer Science at Malmö University
August 1, 2024 - January 13, 2026
Bachelor of Science in Computer Science at University of Wah
August 1, 2017 - August 1, 2021
Diploma of Associate Engineering (DAE), Electronics at POF Institute of Technology
September 1, 2014 - June 1, 2017
Master of Science - Computer Science at Malmö University
January 1, 2024 - January 1, 2026
Bachelor of Science - Computer Science at University of Wah
January 1, 2017 - January 1, 2021
Diploma of Associate Engineering (DAE) - Electronics at POF Institute of Technology
January 1, 2014 - January 1, 2017
Master of Science in Computer Science at Malmö University
January 1, 2024 - January 1, 2026
Bachelor of Science in Computer Science at University of Wah
January 1, 2017 - January 1, 2021
Diploma of Associate Engineering (DAE), Electronics at POF Institute of Technology
January 1, 2014 - January 1, 2017
Master of Science at Malmö University
January 1, 2024 - January 1, 2026
Bachelor of Science at University of Wah
January 1, 2017 - January 1, 2021
Diploma of Associate Engineering (DAE) at POF Institute of Technology
January 1, 2014 - January 1, 2017

Qualifications

Diploma of Associate Engineering (DAE) - Electronics
September 1, 2014 - June 1, 2017
AWS Cloud Technology Consultant
January 11, 2030 - January 13, 2026
Automation in the AWS Cloud
January 11, 2030 - January 13, 2026
Capstone: Following the AWS Well-Architected Framework
January 11, 2030 - January 13, 2026
Data Analytics and Databases on AWS
January 11, 2030 - January 13, 2026
DevOps on AWS and Project Management
January 11, 2030 - January 13, 2026
AWS Cloud Technology Consultant
January 11, 2030 - February 13, 2026
Automation in AWS Cloud
January 11, 2030 - February 13, 2026
Capstone: Following the AWS Well-Architected Framework
January 11, 2030 - February 13, 2026
Data Analytics and Databases on AWS
January 11, 2030 - February 13, 2026
DevOps on AWS and Project Management
January 11, 2030 - February 13, 2026
AWS Cloud Technology Consultant
January 11, 2030 - February 13, 2026
Capstone: Following the AWS Well-Architected Framework
January 11, 2030 - February 13, 2026
AWS Cloud Technical Essentials
January 11, 2030 - February 13, 2026
AWS Cloud Technology Consultant
January 11, 2030 - February 13, 2026
Automation in the AWS Cloud
January 11, 2030 - February 13, 2026
Capstone: Following the AWS Well-Architected Framework
January 11, 2030 - February 13, 2026
Data Analytics and Databases on AWS
January 11, 2030 - February 13, 2026
DevOps on AWS and Project Management
January 11, 2030 - February 13, 2026

Industry Experience

Software & Internet, Professional Services, Media & Entertainment, Education, Healthcare, Retail