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I’m a Senior Full Stack Developer with 7+ years of experience building scalable, production-grade AI-powered SaaS platforms. I specialize in designing cloud-native systems and delivering reliable back-end and end-to-end solutions using microservices, distributed architectures, event-driven patterns, and strong API design practices. I enjoy working at the intersection of software engineering and AI—integrating LLMs with RAG pipelines, building background processing and asynchronous workflows, and improving performance and accuracy in real products. Whether it’s containerized deployments on AWS and Kubernetes or modern front-end development with React/Next.js, I focus on reliability, scalability, and measurable outcomes.…I’m a Senior Full Stack Developer with 7+ years of experience building scalable, production-grade AI-powered SaaS platforms. I specialize in designing cloud-native systems and delivering reliable back-end and end-to-end solutions using microservices, distributed architectures, event-driven patterns, and strong API design practices. I enjoy working at the intersection of software engineering and AI—integrating LLMs with RAG pipelines, building background processing and asynchronous workflows, and improving performance and accuracy in real products. Whether it’s containerized deployments on AWS and Kubernetes or modern front-end development with React/Next.js, I focus on reliability, scalability, and measurable outcomes.

Lajkovač Šenior Full Stack Developer

Full Stack Developer, Web Developer, Software Engineer, +3

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I’m a Senior Full Stack Developer with 7+ years of experience building scalable, production-grade AI-powered SaaS platforms. I specialize in designing cloud-native systems and delivering reliable back-end and end-to-end solutions using microservices, distributed architectures, event-driven patterns, and strong API design practices. I enjoy working at the intersection of software engineering and AI—integrating LLMs with RAG pipelines, building background processing and asynchronous workflows, and improving performance and accuracy in real products. Whether it’s containerized deployments on AWS and Kubernetes or modern front-end development with React/Next.js, I focus on reliability, scalability, and measurable outcomes.…I’m a Senior Full Stack Developer with 7+ years of experience building scalable, production-grade AI-powered SaaS platforms. I specialize in designing cloud-native systems and delivering reliable back-end and end-to-end solutions using microservices, distributed architectures, event-driven patterns, and strong API design practices. I enjoy working at the intersection of software engineering and AI—integrating LLMs with RAG pipelines, building background processing and asynchronous workflows, and improving performance and accuracy in real products. Whether it’s containerized deployments on AWS and Kubernetes or modern front-end development with React/Next.js, I focus on reliability, scalability, and measurable outcomes.

Available to hire

I’m a Senior Full Stack Developer with 7+ years of experience building scalable, production-grade AI-powered SaaS platforms. I specialize in designing cloud-native systems and delivering reliable back-end and end-to-end solutions using microservices, distributed architectures, event-driven patterns, and strong API design practices.

I enjoy working at the intersection of software engineering and AI—integrating LLMs with RAG pipelines, building background processing and asynchronous workflows, and improving performance and accuracy in real products. Whether it’s containerized deployments on AWS and Kubernetes or modern front-end development with React/Next.js, I focus on reliability, scalability, and measurable outcomes.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Javanese

Advanced

Work Experience

Senior Full Stack Developer at Accenture (Remote, London)

May 20, 2024 - August 20, 2026

Designed and deployed cloud-native application architectures using AWS, Docker, Kubernetes, and Nginx, improving service availability and reducing deployment-related issues by 35%. Architected high-availability back-end systems using PostgreSQL, Redis, queues, caching, and horizontal scaling to support millions of monthly API requests with reliable performance. Containerized frontend and backend services with Docker, standardizing local/staging/production environments and reducing environment-related deployment issues by 50%. Built background processing infrastructure with Redis, Celery, and Kafka to move long-running AI/data processing workloads outside the request cycle, reducing API latency by 40%. Built and integrated LLM-powered applications using OpenAI, Anthropic Claude, and Google Gemini APIs for chat, content generation, recommendations, summarization, and structured data workflows; also integrated LLMs with Stripe, CRM systems, databases, webhooks, and third-party APIs to ena

Senior Full Stack Developer at Accenture

May 1, 2024 - August 20, 2026

Designed and deployed cloud-native application architectures on AWS using Docker, Kubernetes, and Nginx, improving service availability and reducing deployment-related issues. Built high-availability backend systems with PostgreSQL, Redis, queues, caching, and horizontal scaling to support millions of monthly API requests. Containerized frontend and backend services to standardize environments across local/staging/production and reduce deployment environment issues. Implemented background processing with Redis, Celery, and Kafka to move long-running AI and data tasks out of request cycles, reducing API latency. Built and integrated LLM-powered applications using OpenAI, Anthropic Claude, and Gemini APIs for chat, content generation, recommendations, summarization, and structured-data workflows. Integrated LLMs with tools and business systems (Stripe, CRM systems, databases, webhooks, and third-party APIs) so agents can act on real application data. Improved AI answer accuracy with RAG

Full Stack Web Developer at Vega IT (Hybrid, Belgrade)

April 1, 2022 - February 20, 2025

Used AI coding tools (Claude Code, Cursor, GitHub Copilot, ChatGPT) to accelerate code generation, debugging, refactoring, test creation, documentation, and investigation of production issues while manually reviewing generated code before release. Built AI-powered automation workflows using n8n, Make.com, and Zapier, connecting APIs, CRMs, webhooks, databases, and internal applications to reduce repetitive manual work. Used Azure DevOps for Git-based source control, CI/CD pipelines, release management, work item tracking, and deployments across development and production environments. Implemented automated test suites for Next.js and .NET applications, achieving 90%+ test coverage and reducing regressions during releases. Improved frontend performance by 30% by reducing unnecessary React re-renders, optimizing assets, implementing SSR, lazy loading, and caching. Developed secure, scalable RESTful APIs and integrated third-party services, authentication systems, webhooks, and external d

Full Stack Web Developer at Vega IT

April 1, 2022 - February 1, 2025

Used AI coding tools (Claude Code, Cursor, GitHub Copilot, ChatGPT) to accelerate code generation, debugging, refactoring, tests, and documentation, with manual review before release. Built AI-powered automation workflows using n8n, Make.com, and Zapier to connect APIs, CRMs, webhooks, databases, and internal applications and reduce repetitive manual work. Implemented CI/CD and release workflows with Azure DevOps across environments. Added automated test suites for Next.js and .NET achieving over 90% test coverage and reducing regressions. Improved frontend performance by ~30% by removing unnecessary React re-renders, optimizing assets, and implementing SSR, lazy loading, and caching strategies. Developed secure and scalable REST APIs and integrated third-party services, authentication systems, webhooks, and external data sources. Delivered reusable frontend components and backend modules for internal enterprise tools.

Web Developer at Getronics (Remote, Amsterdam)

September 1, 2020 - March 1, 2022

Built and maintained web back-end features using PHP and Laravel; converted UI/UX mockups into React screens and components with Bootstrap and CSS. Worked with React and Node.js to implement frontend and backend features and handle data. Switched backend from MySQL to MongoDB to improve scalability and performance as user data and transactions grew. Built React and Java/MongoDB components to track employees’ work time, vacation, and sick days. Developed and maintained web-based business applications using React, Node.js, PHP, and Laravel, creating reusable frontend components and backend modules for internal enterprise tools. Worked with cloud-hosted databases and services to improve scalability and reliability; reduced frontend loading time by 30% through avoiding unnecessary renders, optimizing assets, and using SSR/caching. Implemented a search engine using Java, a Node.js REST API for data access, and a React web frontend for managing and searching results with fast configurable

Web Developer at Getronics

September 1, 2020 - March 1, 2022

Built backend features with PHP and Laravel and handled data access and persistence. Converted UI/UX mockups to React screens and components using Bootstrap and CSS. Developed frontend and backend features using React and Node.js. Migrated the backend from MySQL to MongoDB to improve scalability and performance as user data and transactions grew. Built a React + Java + MongoDB component to track employee work time, vacation, and sick days. Developed and maintained web-based business applications using React, Node.js, PHP, and Laravel. Created reusable frontend components and backend modules for internal enterprise tools. Worked with cloud-hosted databases and services to improve scalability and reliability. Reduced frontend loading time by ~30% through optimized rendering and asset/caching strategies. Implemented Java-based search engine components and REST APIs, and a React frontend for searching and managing results using a fast configuration-based regex search function.