
Hassan Usman
@hassanusman
Software Architect at One Valley, building Spring Boot microservices and an AI assistant for Passport OS.
What I'm looking for
At One Valley, I work on Passport OS, a SaaS community platform, and built an AI admin assistant using LangChain and a generative AI model. It lets admins ask plain-English questions about live program data and send evaluation reminders in one request.
At One Valley, I also designed a RabbitMQ architecture for 50k+ concurrent requests and reduced API response times from 28 seconds to under 500 milliseconds during load testing. Before that, I led development at Alsharqi Holding Group WLL, where Scrum practices improved project delivery speed and quality by 60%.
Experience
Work history, roles, and key accomplishments
Software Architect Engineer
OneValley
Jan 2024 - Present (2 years 10 months)
○ Designed and implemented a new RabbitMQ architecture handling 50k + concurrent requests with high scalability and stability.
○ Reduced API response times from 28 seconds to under 500 miliseconds during load testing by implementing dynamic consumer-side scaling and RPC message Gzip compression.
○ Collaborated with team members, explained technical solutions, and guided developers on resolving com
Principal Software Engineer
Alsharqi Holding Group WLL
Jan 2022 - Dec 2023 (1 year 11 months)
→ Development Lead:
○ During this tenure, Lead a team of 25 to 35 developers and engineers in the design, development, and QA departments.
○ Collaborate with product manager, process team and stakeholders to define project scope, goals, and timelines.
○ Implement Scrum methodologies and best practices, resulting in a 60% improvement in project delivery speed and quality.
→ Architecture Optimizati
→ Back-end Lead:
• Recognized and improved code inefficiencies that led to a 60% increase in APIs response.
• Fixed major issues in scheduling a ride.
• I used to develop the backend architecture for new requirements and, in accordance with those requirements, create business logic for junior team members.
○ Here, I joined as a backend developer, and I got the opportunity to work in ASP.NET as well.
○ Involved in the full life cycle of the project including planning, designing, development, testing and deployment.
○ Responsible for coding of DAO classes using Spring with hibernate.
○ Utilized frameworks such as Hibernate and Spring for persistence and application layers.
○ Received recognition with
Mobile Application Developer
Avragon Tehnologies
Mar 2015 - Sep 2016 (1 year 6 months)
○ Successfully completed and published three apps on the Play Store, showcasing my dedication and ability to deliver fully functional applications.
○ Demonstrated expertise in both MVP and MVC architectures, employing Kotlin to enhance code quality and maintainability.
Education
Degrees, certifications, and relevant coursework
Lahore Leads University -City Campus
Bachelor’s Degree, Computer Science
Major Subjects:
OOP
Java
Web basic (HTML, CSS, Bootstrap)
Advance Web (Asp.Net)
Mobile Programming (Android)
Artificial intelligence
Tech stack
Software and tools used professionally
Ethereum
Kubernetes
Spring Cloud
MySQL
PostgreSQL
Microsoft SQL Server
Spring Boot
Spring MVC
Redis
Android Studio
Azure DevOps Server
Java 8
Cypress
Vue.js
AngularJS
Java
Kotlin
ASP.NET
C++
ELK
Google Maps
Kafka
RabbitMQ
Hibernate
Firebase
Elasticsearch
Spring Security
Mockito
OAuth2
Docker
NetSuite
LangChain
OpenAI API
Groq
LangChain4j
Spring AI
Apache Kafka
AWS
REST APIs
Availability
Location
Authorized to work in
Salary expectations
Social media
Job categories
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