Ahsun Chohan
Ahsun Chohan
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STAFF SOFTWARE ENGINEER
STAFF SOFTWARE ENGINEER
15+ Years in Full-Stack & Cloud Systems | Go, Java, Python, C# | GCP, AWS, Azure | Scalable APIs & Data Platforms | DevOps | Observability
Built and scaled systems across AdTech, SaaS, Telecom, and Energy | Delivered performance-critical platforms using raw SQL, gRPC, and cloud-native tools | Led technical direction, mentored engineers, and improved system reliability at scale
✉️ contact(at)ahsun.me📍 Dublin, Ireland
Education
Education
2006–2010 · National University of Computer and Emerging Sciences (FAST-NUCES), Islamabad - Pakistan
- Bachelor of Science in Computer Science
- GPA: 3.60/4.00
- Teaching Assistant
- Algorithms
- Data Structures
- Operating System
Certifications
Certifications
- Elements of Al for Business
- AI Agents and Agentic AI with Python & Generative AI
- GraphQL API Development: Schema Design,Security & Deployment
- GraphQL Fundamentals–Design APIs,Schema,Frontend Integration
- Getting Started with Python
- React Basics
- Monitoring GKE with Datadog
- GitOps Fundamentals
- Logging and Monitoring in Google Cloud
- Architecting with Google Kubernetes Engine: Foundations
- Essential Google Cloud Infrastructure: Core Services
- Essential Google Cloud Infrastructure: Foundation
- Introduction to Generative AI
- Preparing for Google Cloud Certification: Cloud Architect
- Reliable Google Cloud Infrastructure: Design and Process
- Typescript in React: Get started
- App Deployment, Debugging, and Performance
- Elastic Google Cloud Infrastructure: Scaling and Automation
- Securing and Integrating Components of your Application
- Getting Started With Application Development
- Getting Started with Google Kubernetes Engine
- Google Cloud Fundamentals: Core Infrastructure
- Concurrency in Go
- Programming with Google Go
- Functions, Methods, and Interfaces in Go
- Getting Started with Go
- Axway B2BI Technical Certification
Work Experience
Work Experience
2022–Present · Sojern, Dublin - IrelandStaff Software Engineer
Owned backend services for the Audience Management Platform, delivering scalable audience creation, retrieval, and activation used across all major campaign workflows
Delivered core APIs for Portal 3.0 migration, unblocking campaign creation and improving reliability for large scale CPM and HH campaigns
Improved Audience Service performance by over 200 percent by redesigning gRPC APIs, optimizing raw SQL queries, and introducing batching and async processing
Scaled campaign driven audience creation to support high volume CPM, Prospecting, and Retargeting campaigns under strict latency and reliability targets
Enabled Household Targeting and cookieless campaigns across Microsoft, Meta, Xandr RTSS, and Pubmatic, protecting and enabling multi million monthly net revenue
Reduced campaign setup time from hours to minutes by automating audience creation at campaign submission time
Improved platform reliability and incident response by introducing structured logging, OpenTelemetry tracing, and Datadog monitoring across Audience and gateway services
Served as a technical lead for performance, observability, and data access, mentoring engineers and influencing cross team design decisions
Mentor engineers and drive technical decisions across teams
2021–2022 · Microsoft, Dublin - IrelandSenior Software Engineer
Led design and delivery for workplace transformation tools
Improved engineering lifecycle and delivery speed
- Conducted architecture reviews and supported hiring
2016–2021 · Sysco AS, Oslo - NorwayPrincipal Consultant & Solution Architect
Delivered smart meter platforms used by 30+ energy companies
Led Azure migration and CI/CD automation for education and utility systems
- Built scalable APIs and GDPR-compliant systems using Java, Apache Camel, Oracle
2013–2016 · Canal Digital, Oslo - NorwaySOA Developer & Technical Lead
Built CI/CD pipelines with Jenkins and Oracle SOA
Designed billing integration for TV set-top boxes
- Boosted revenue with rule-based payment system
2010–2013 · Telenor Shared Services, Islamabad - PakistanGIS Executive
Built internal user management tools using Spring and Oracle DB
Developed backend SOA services supporting Canal Digital
2010 · Techlogix, Islamabad - PakistanSoftware Engineer
Migrated customer data from MSSQL to DB2 using IBM ESB
Developed telecom backend flows for Ufone
Languages
Languages
English - Fluent
Urdu - Fluent
Skills
Skills
- Programming
- Go, Java, Python, C#, JavaScript, TypeScript, React, Vue.js
- Cloud Platforms
- Google Cloud Platform (GCP), Microsoft Azure, AWS
- DevOps & CI/CD
- Jenkins, GitHub Actions, Azure DevOps, Bitbucket, Terraform
- Databases
- PostgreSQL, Oracle DB, MSSQL, MySQL, Cosmos DB, DynamoDB
- APIs & Integration
- gRPC, REST, Kafka, Swagger/OpenAPI, Apache Camel, Oracle SOA Suite
- Observability
- Datadog, OpenTelemetry, Log-based Monitoring
- Architecture & Delivery
- Solution Architecture, Scalable Systems, GDPR Compliance
- Tools & Tech
- Docker, Kubernetes, Git, SoapUI, Axway B2BI
Interests
Interests
✈️ Traveling
🏊♂️ Swimming
🏸 Badminton
🕹️ Computer & Online Games
🎧 Music
📷 Photography
☕ Coffee & Cafés
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