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Kerim Balayev

@kerimbalayev

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Lead Software Engineer building web platforms at PwC and across fintech, government, and healthcare.

Turkey

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What I'm looking for

I’m looking to apply my growing LLM application engineering experience—RAG architecture, LangChain, LangGraph, and MCP—on production work.

At PwC, I’m extending existing .NET/C# services alongside TypeScript work. As an Independent Software Consultant, I delivered full-stack solutions for clients including ACI Worldwide, Roche, Unily, and Bettr.App, designing accessible React, Next.js, and Angular front ends and Node.js service layers.

At the Ministry of National Education of Türkiye, I led a team of four engineers delivering digital platforms for students and teachers. PostgreSQL indexing, query tuning, and Redis caching cut API response time by roughly 35%, and I implemented real-time classroom features over WebSockets.

At EPAM Systems, I built Angular applications for banking clients and introduced a shared component library adopted across four project teams, reducing the build time for new screens by around 30%. Earlier, at Citibank, I refactored a large Angular codebase into a modular architecture, improving render performance by roughly 40% on data-heavy screens.

I’m building depth in LLM application engineering through self-directed projects and prototypes, exploring RAG architecture, LangChain, LangGraph, and MCP. I’m looking to apply that work in production.

Experience

Work history, roles, and key accomplishments

Current

Independent Software Consultant

Current

Independent

Sep 2024 - Present (2 years 1 month)

Delivered full-stack solutions for 5+ international clients, moving between senior IC, team lead, and frontend architect depending on engagement needs. Architected React, Next.js, and Angular front ends using modular and micro-frontend patterns for high-traffic, WCAG-compliant products in regulated sectors.

TypeScript NodeJS React Next.js Angular C# .NET REST APIs PostgreSQL AWS Terraform GitHub Actions CI CD WCAG Microservices CQRS

Team Lead

Ministry of National Education of Türkiye

May 2024 - Aug 2025 (1 year 3 months)

Led a team of 4 engineers delivering government digital platforms, owning both backend service design and frontend architecture in high-usage environments. Cut API response time by roughly 35% through PostgreSQL indexing strategy, query tuning, and Redis caching on high-volume read paths.

NodeJS NestJS TypeScript React Next.js Angular PostgreSQL MongoDB Redis RabbitMQ Docker Kubernetes GitHub Actions Nginx Graylog

Software Engineer

EPAM Systems

Jul 2021 - Feb 2024 (2 years 7 months)

Built full-stack applications for banking clients: Angular interfaces backed by REST services, delivered under regulated review and release processes. Designed and introduced a shared component library adopted across 4 project teams, cutting the build time for new screens by around 30%.

Angular TypeScript NodeJS REST APIs OAuth JWT PostgreSQL Jest Git Agile Scrum

JavaScript Developer (Vue, Nuxt)

Upwork

Mar 2022 - Jan 2023 (10 months)

Developed and maintained Upwork platform UI in Vue.js and Nuxt.js, with accessibility conformance across user-facing flows. Rolled out i18n localisation across all frontend repositories, enabling multi-language support platform-wide.

Vue.Js Nuxt.Js JavaScript i18n Lingoport Git

Frontend Developer

Citibank

Nov 2019 - Jun 2021 (1 year 7 months)

Delivered reusable form modules and dashboard components in Angular using RxJS and NgRx state management. Refactored a large Angular codebase into a modular architecture, improving render performance by roughly 40% on data-heavy trading and reporting screens.

Angular TypeScript RxJS NgRX React GitLab CI CD