Experience Databank
Nursultan Akhmetzhanov
Software Developer
Profile
I am an accomplished application developer with expertise in mobile, full-stack web, and cloud computing. My experience is wide yet does not lack depth, covering many aspects of web and mobile applications. I use AI tools, including Codex and Claude, for agentic software development.
Experience
Fullstack Developer (June, 2026 - July, 2026)
Initiated and implemented a change to the background file-conversion workflow so conversions consistently targeted only the latest file version rather than all stored versions, avoiding unnecessary processing and making the behavior predictable.
Optimized SQL queries and backend requests, reducing a REST API response payload by nearly 8x, from 44 KB to 5 KB, while reducing the response time by 50%.
Proactively identified and removed dead-end states in conversion-related UX. Disabled movement arrows whenever an action could no longer change an item's position and updated conversion buttons to surface loading feedback sooner, making interactions clearer and more responsive.
Software Developer (August, 2021 - May, 2026)
Developed the Flutter Web frontend for an admin application in an influencer-brand management system. Built role-based workflows for media content and user management, integrated Auth0 authentication, and delivered responsive, production-ready UI flows with scalable lists and tables capable of handling 10,000s of user records.
Developed and deployed Restel's production Flutter application for Android, iOS, and Web. Delivered new features, improved performance on key screens by up to 300%, added more than 50 unit tests and 20 integration tests, and managed automated CI builds with Codemagic.
Led development of a TypeScript and NestJS application and its AWS deployment using Lambda, ECS, RDS, S3, ELB, and CloudWatch, delivering backend functionality and a Vue.js drag-and-drop interface.
Built practical cloud delivery experience across AWS and Azure, including containerized deployments, identity integrations, observability setup, and CI/CD pipelines for stable production releases.
Implemented secure OAuth 2.0 authentication for a NestJS and React application supporting multiple user roles and organizations. Added CSRF and XSS protections and deployed the solution to Azure using AD B2C, Entra ID, and App Service.
Created an interactive video player in Vanilla JS for Codemate's careers page, delivering smooth video transitions in under 20 ms, navigation to application forms and related videos, and analytics hooks for engagement tracking.
Developed a Ruby on Rails monolith for computation-heavy financial operations, combining backend processing with frontend data validation, error reporting, tables displaying 100s of rows, and graphs supporting up to 12 axes.
Delivered additional projects of varying sizes and technologies, including maintenance, upgrades, and feature development across multiple stacks and teams.
Frontend Developer & UI/UX designer (December, 2019 - June, 2021)
Developed a small platform application for hyper-local communities and businesses to solve marketing and sales problems for small businesses, focusing on usability and responsive layouts.