I'm a seasoned software engineer with over six years of experience who is passionate about writing clean, scalable, and secure code. I enjoy architecting modular systems with maintainability in mind and embedding thorough testing to ensure reliability. I thrive in collaborative team environments where I can help drive best practices and mentor others. I believe that "Pleasure in the job puts perfection in the work," and I bring both technical excellence and genuine enthusiasm to every project I take on, always striving to deliver high-quality, impactful solutions.…

Zakarya Butt

I'm a seasoned software engineer with over six years of experience who is passionate about writing clean, scalable, and secure code. I enjoy architecting modular systems with maintainability in mind and embedding thorough testing to ensure reliability. I thrive in collaborative team environments where I can help drive best practices and mentor others. I believe that "Pleasure in the job puts perfection in the work," and I bring both technical excellence and genuine enthusiasm to every project I take on, always striving to deliver high-quality, impactful solutions.…

Available to hire

I’m a seasoned software engineer with over six years of experience who is passionate about writing clean, scalable, and secure code. I enjoy architecting modular systems with maintainability in mind and embedding thorough testing to ensure reliability. I thrive in collaborative team environments where I can help drive best practices and mentor others.

I believe that “Pleasure in the job puts perfection in the work,” and I bring both technical excellence and genuine enthusiasm to every project I take on, always striving to deliver high-quality, impactful solutions.

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Skills

Experience Level

Vue.js
Expert
Python
Expert
JavaScript
Expert
React JS
Expert
Docker
Expert
Express
Expert
TypeScript
Expert
PostgreSQL
Expert
Node.js
Expert
MySQL
Expert
MongoDB
Expert
Amazon Web Services
Expert
Jira
Expert
GitHub
Expert
Flutter
Expert
AWS
Expert
Stripe
Intermediate
Java
Intermediate
Spring
Intermediate
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Language

English
Fluent
Javanese
Advanced

Work Experience

Lead Software Developer at Encoo Pty Ltd
July 1, 2024 - June 19, 2024
Architected & scaled the quoting subsystem increasing capacity by 5× for ISPs and customers, optimizing database schema and indexes reducing quote-generation time by 70%. Led the migration from Vue 2 to Vue 3 integrating TypeScript and Vuetify-based design system, improving UI consistency and cutting frontend feature development time by 40%. Optimized Python Flask backends and slow JOIN queries, lowering 95th-percentile API latency from 800 ms to 200 ms. Revamped CI/CD GitLab pipelines with Docker, reducing release cadence from bi-weekly to daily. Expanded Cypress end-to-end test coverage from 30% to 85%, catching critical regressions. Defined Git branching strategy and JIRA workflows, decreasing merge conflicts by 60%. Collaborated with Product and UX teams on technical roadmaps and managed AWS infrastructure (EC2, S3, RDS, CloudWatch) ensuring availability, security, and backups.
Full Stack Developer & Senior Mobile App Developer at RLTSquare
January 1, 2020 - June 30, 2024
Delivered end-to-end web applications across finance, e-commerce, and media sectors, boosting throughput by 50% and launching six major projects in 12 months. Designed microservices backend with Node.js, Express, and MongoDB, reducing feature rollout time by 40%. Built shared React/Redux component library for UI consistency and accelerated frontend development by 30%. Developed backend services in Java (Spring Boot) and optimized PostgreSQL and MySQL databases cutting API latency from 850 ms to 200 ms under load. Led integration of AI-powered virtual makeup try-on feature with 92% accuracy facial detection. Mentored junior developers introducing TDD, increasing test coverage from 60% to 90%, reducing bugs by 70%. Automated CI/CD with Docker and GitLab cutting release time from 2 hours to 15 minutes. Spearheaded cross-platform Flutter mobile app development with secure onboarding, Supabase backend, Stripe payments, RevenueCat subscription management, and OneSignal push campaigns, stream
Lead Software Developer at Encoo Pty Ltd
July 1, 2024 - June 16, 2024
Architected and scaled the quoting subsystem to service 5× more ISPs and customers, redesigning database schema and adding indexes to reduce average quote-generation time by 70%. Led the migration from Vue 2 to Vue 3, introducing a component library, TypeScript integration, and Vuetify-based design system to improve UI consistency and reduce new-feature front-end development time by 40%. Optimized backend performance by refactoring Python (Flask) endpoints and rewriting slow JOIN queries, lowering 95th-percentile API latency from 800 ms to 200 ms. Spearheaded CI/CD overhaul in GitLab with Docker-based pipelines for testing, staging, and production deploys, slashing release cadence from bi-weekly to daily. Expanded Cypress end-to-end test coverage from 30% to 85%, uncovering and fixing critical regressions before production. Defined and enforced Git branching strategy and JIRA workflows, improving traceability and reducing merge conflicts by 60%. Collaborated cross-functionally with Pr
Full Stack Developer & Senior Mobile App Developer at RLTSquare
January 1, 2020 - June 30, 2024
Architected and delivered end-to-end web applications for clients across finance, e-commerce, and media, boosting delivery throughput by 50% and launching 6 major projects in 12 months. Designed a microservices backend with Node.js, Express, and MongoDB, decoupling legacy monoliths and reducing feature rollout time by 40%. Built React/Redux component library enforcing UI consistency and accelerating frontend development by 30%. Contributed to backend Java (Spring Boot) services for tooling and prototyping. Optimized PostgreSQL and MySQL database performance, cutting 95th-percentile API latency from 850 ms to 200 ms under 1,000-user load. Led integration of AI-powered virtual makeup try-on feature with university lab, developing facial-feature detection algorithms in Python/Flask with 92% accuracy and scalable image-processing pipeline. Mentored 3 junior developers, introducing Test-Driven Development and raising coverage from 60% to 90%, slashing production bugs by 70%. Orchestrated CI
Lead Software Developer at Encoo Pty Ltd
July 1, 2024 - Present
Architected & scaled the quoting subsystem to service 5× more ISPs and customers, redesigning database schema and adding indexes to reduce average quote-generation time by 70%. Designed and led the migration from Vue 2 to Vue 3, introducing a component library, TypeScript integration, and Vuetify-based design system—improving UI consistency and cutting new-feature front-end development time by 40%. Optimized backend performance by refactoring Python (Flask) endpoints and rewriting slow JOIN queries—lowering 95th-percentile API latency from 800 ms to 200 ms. Spearheaded CI/CD overhaul in GitLab: built Docker-based pipelines for testing, staging, and production deploys, slashing release cadence from bi-weekly to daily. Drove quality by expanding Cypress end-to-end test coverage from 30% to 85%, uncovering and fixing critical regressions before they reached production. Defined & enforced Git branching strategy and JIRA workflows, improving traceability of feature work and reducing me
Full Stack Developer & Senior Mobile App Developer at RLTSquare
June 30, 2024 - July 27, 2025
Architected & delivered end-to-end web applications for clients across finance, e-commerce, and media verticals, boosting delivery throughput by 50% and launching 6 major projects within 12 months. Designed a microservices backend with Node.js, Express and MongoDB, decoupling legacy monoliths and reducing feature rollout time by 40%. Built a shared React/Redux component library, enforcing UI consistency and accelerating frontend feature development by 30%. Contributed to backend services in Java (Spring Boot) during internal tooling enhancements and prototyping phases. Optimized database performance in PostgreSQL and MySQL—rewrote slow JOIN queries, added composite indexes, and cut 95th-percentile API latency from 850 ms to 200 ms under 1,000-user load. Led the integration of an AI-powered virtual makeup try-on feature with facial-feature detection algorithms in Python/Flask achieving 92% accuracy and a scalable image-processing pipeline handling 500+ uploads/hour. Mentored & coached

Education

B.S. Computing & Software Systems at University of Melbourne
January 1, 2019 - December 31, 2022
B.S. Computing & Software Systems at University of Melbourne
January 1, 2019 - December 31, 2022
B.S. at University of Melbourne
January 1, 2019 - December 31, 2022

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Telecommunications, Financial Services, Media & Entertainment, Professional Services, Retail
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