Muhammad
Rayan

June 2026 – Present

Think Advertise · Lahore, Pakistan

• —Lead end-to-end delivery of client-facing web products owning technical direction from requirements and system design through staging, QA, and production release.
• —Architect and maintain internal tooling and dashboards that surface operational data to non-technical stakeholders, reducing reliance on ad-hoc engineering support.
• —Design and own backend API systems built on Node.js and PostgreSQL; define data contracts, access patterns, and integration standards consumed across frontend and third-party surfaces.
• —Guide and unblock junior engineers across the team — conducting code reviews, setting quality standards, and providing technical direction on implementation approach and architecture decisions.
• —Serve as the primary technical point of contact across cross-functional workstreams — translating product requirements into system design and keeping delivery aligned with business goals.

June 2025 – June 2026

BIG O SOFT · Remote, Pakistan

• —Architected and shipped full-stack applications across the complete lifecycle from technical scoping through deployment on React, Node.js, and PostgreSQL.
• —Owned smart contract integration using Ethers.js; defined transaction flow standards enabling secure, auditable on-chain operations for end users.
• —Directed performance optimisation initiatives; analysed runtime and rendering bottlenecks to deliver measurable improvements to production load times.
• —Diagnosed and resolved a suite of performance issues across the stack; delivered measurable improvements in page responsiveness and user-facing load times in production.
• —Contributed to a remote-first engineering culture by maintaining clear async communication, thorough documentation, and consistent delivery against sprint commitments.

Jan 2025 – May 2025

InvoZone · Lahore, Pakistan

• —Delivered production-grade UI components in React and Tailwind CSS scoping, implementing, and shipping features across multiple concurrent workstreams.
• —Designed and maintained RESTful APIs in Node.js and Express underpinning core backend operations; contributed architectural input on data modelling and endpoint contracts.
• —Resolved critical production defects and shipped features end-to-end across a live, high-traffic codebase operating with increasing autonomy within a senior-led team.
• —Collaborated closely with senior engineers and product leads to surface technical constraints early, contributing to scope decisions that reduced last-minute rework and protected delivery timelines.
• —Maintained consistent delivery velocity across sprint cycles managing multiple in-flight workstreams, self-prioritising tasks, and communicating blockers proactively to keep team throughput uninterrupted.

Jul 2024 – Dec 2024

Villaex Technologies · Lahore, Pakistan

• —Delivered full-stack features end-to-end in React and Node.js scoped, implemented, tested, and shipped to production within an agile team.
• —Diagnosed and resolved issues across a large live codebase; maintained system stability while onboarding to a complex production environment.
• —Contributed to code review and version control workflows via Git submitting PRs, addressing review feedback, and tracking work through issue management tooling.
• —Validated feature correctness and performance against acceptance criteria before each production release catching edge cases during QA that prevented regressions from reaching end users.
• —Ramped independently on an unfamiliar, large-scale production codebase within the first sprint mapping system architecture, understanding data flows, and shipping assigned work without requiring extended handholding.