Usman
Saleem
Architecting and shipping scalable B2B SaaS applications, AI-powered product features, and high-performance real-time systems. Deep expertise in Vue.js, React, TypeScript, and frontend platform architecture.
I've led teams, owned platform roadmaps, and delivered measurable business impact — including a ~75% reduction in manual procurement effort through end-to-end AI workflow automation.
Experience
Senior Engineer &
Engineering Lead
Senior Full Stack Engineer with 10+ years of experience architecting and shipping scalable B2B SaaS applications, AI-powered product features, and high-performance real-time systems. Deep expertise in Vue.js, React, TypeScript, and frontend platform architecture — combined with strong full-stack delivery across Node.js, Ruby on Rails, Golang, GraphQL, and distributed backend systems.
Lead Software Engineer (Staff-level IC)
Hivebuy · July 2020 – Present Berlin, GermanyTechnical Team Lead (Frontend Focus)
Sendoso · Oct 2019 – Nov 2021 Remote · Concurrent part-time / contractSenior Software Engineer
Square63 · Aug 2015 – Sep 2019 Lahore, PakistanEducation
MS, Software Project Management
FAST NUCES 2018 – 2020BS, Computer Science
FAST NUCES 2011 – 2015Certifications
AWS Certified AI Practitioner
Amazon Web Services 2024How I Can Help
Frontend Platform Architecture
Defining scalable frontend platforms — design systems, component libraries, microfrontends, and engineering standards that scale across multiple teams and product surfaces.
Full Stack Development
End-to-end delivery across Vue.js, React, TypeScript, Node.js, Ruby on Rails, Golang, GraphQL, and REST APIs — from B2B SaaS to real-time systems.
AI / LLM Integration
Building AI-powered product features using OpenAI APIs, LLM integration, RAG workflows, and streaming UX — translating AI capabilities into measurable business impact.
Engineering Leadership
Leading and growing engineering teams through mentorship, PR culture, CI/CD guardrails, and documentation practices — bridging technical and product strategy.
Featured Projects
Hivebuy — AI Procurement Module
End-to-end AI workflow system: automated supplier recommendations, spend anomaly detection, RFI generation, and intelligent approval routing — reducing manual procurement overhead by ~75% for enterprise clients.
Hivebuy — Real-time Approval System
Real-time approval and notification system covering approvals, activity feeds, dashboard synchronisation, and live updates across the B2B SaaS procurement platform.
Hivebuy — Vue Component Library
Centralised Vue + Tailwind component library (Storybook-documented) adopted across all product surfaces, eliminating duplicated implementations and accelerating feature delivery.
My Tech Stack
TypeScript · JavaScript (ES6+) · HTML5 · CSS3 · Ruby · Python
Vue.js · Vuex · Pinia · React · Redux · Next.js · Nuxt.js · Tailwind CSS · Storybook
Design Systems · Microfrontends · Component Libraries · Frontend Platform · Real-time Systems
OpenAI APIs · LLM Integration · RAG Workflows · Streaming AI UX · Prompt Engineering
Node.js · Ruby on Rails · Golang · REST APIs · GraphQL · WebSockets · Socket.io
PostgreSQL · MySQL · Redis · Kafka / Karafka · AWS · GCP · Vercel
Vite · Webpack · GitHub Actions · CI/CD · Cypress · RSpec · Automated Testing · Agile / Scrum
What People Say
Usman is a very proactive, creative, and talented engineer and manager. In my time working with him, he was someone who was a clear communicator, provided clever approaches to problems we encountered, and always held himself accountable to the team's work. He's someone I feel lucky to have had the chance to work with!
We put Usman's full stack developer skills to the test and he rose to the challenge. Usman provided the right balance of patience and expertise to guide our team through a small but nuanced project. The requirements were not fully flushed out when the project commenced, and he was able to help us think through and finalize those as well. I would gladly work with Usman again.
Usman is a great leader to manage large teams. I had the pleasure of working with him on the same project, and he always leads by example. He always tries to keep the team motivated and share his knowledge. I believe he is one of the best leads I ever had, as his people skills are highly developed. His ability to deal with a crisis and come up with new ways to achieve results were always an inspiration.
There is absolutely no doubt about Usman's technical ability and he has this incredible level of patience to deal with every situation no matter what you throw his way. He is a true definition of a leader who actually leads from the front. He ensures the individuals working with him are all growing within their roles, encourages everyone to come forward and participate, and maintains an incredible balance between stakeholder expectations and the team.
Let's Work Together
Open to Senior / Staff / Lead roles · Berlin or Remote