Milos Djurdjevic

MILOS DJURDJEVIC Senior Full Stack Developer | Scalable Web Systems & API Architecture Expert linkedin.com/in/milos-djurdjevic-dd Belgrade, Serbia Summary Senior Full-Stack Developer with over 15 years of experience building robust web platforms, real-time systems, and AI-integrated applications. Proficient in python, Django and fastapi, React and Node.js, with hands-on expertise in AWS, Docker, and GCP. Combines deep technical knowledge with a product-driven mindset, delivering scalable and maintainable solutions. Strong communicator with a proven track record in remote, cross-functional teams. Skills Languages: Python JavaScript TypeScript C# Java Go HTML CSS SQL Bash Frameworks: Django Fastapi Node.Js NumPy TensorFlow Angular 2+ React Vue Flask Express.js Next.js Databases: MySQL PostgreSQL MongoDB SQLite Redis Elasticsearch Oracle Database GraphQL NoSQL DevOps & Development: Docker Kubernetes CI/CD Git/GitHub/GitLab Jira/ClickUp GCP AWS Azure Celery/Redis OAuth Experience Searchlight Senior Full Stack Developer United States 12/2022 - 07/2025 • Directed an 8-person team through a complete migration from a monolithic legacy stack to a modern microservice architecture, slashing developer onboarding time by 50%. • Tuned critical SQL queries and introduced Redis backend caching, slashing average database latency by 90% and eliminating performance bottlenecks at peak load. • Built a Django and Node.Js based payment microservice orchestrated with Docker and Kubernetes, integrating Stripe and Coinbase to reduce partner integration effort by 50% and maintain 99.99% payment uptime. • Unified Node.js and Python build processes for eight microservices and upgraded service from Python 2 to Python 3 and Node.js 6 to Node.js 12. • Increased application performance by 30% through designing enterprise-level web applications using React.js, Redux, Python/Django and Node.Js. • Automated CI/CD pipelines with AWS CloudFormation, Lambda, and KMS, shortening deployment cycles from hours to minutes and raising release frequency by 40%. • Embedded unit, integration, and contract tests into the GCP workflow to reach 95% code-coverage and catch regressions before production. • Championed Agile rituals sprint planning, retrospectives, and daily stand-ups improving squad velocity by 30% and increasing cross-team transparency. • Announced a federated GraphQL gateway that reduced cross-service chatter by 40% and simplified API discovery for front-end teams. Experience Loadsmart Full Stack Developer United States 06/2019 - 11/2022 • Developed user interfaces using React JS and Node.Js, leveraging the latest technologies for Single Page Application (SPA) development, resulting in 30% increase in high responsive and interactive user interfaces. • Led the green-field rebuild of a legacy codebase in Django and Fastapi, eliminating 100% of compile-time errors and simplifying maintenance. • Incorporated robust state-management patterns that cut state-related bugs by 25% and simplified feature onboarding. • Simplified visually stunning frontends with Tailwind CSS from Figma designs, resulting in a 35% increase in user retention and satisfaction. • Converted high-fidelity Figma designs into responsive Tailwind-CSS layouts, increasing user retention by 35% on mobile. • Defined over 30 REST and GraphQL API contracts with the back-end team, ensuring versioned, backwardcompatible endpoints and reducing integration issues by 40% during feature releases. • Instituted automated Jest and Cypress test suites covering 80% of code paths, reducing release regressions by 30%. • Collaborated in a 12-person backend team to define API requirements and endpoints, and facilitate seamless integration between the frontend and backend. • Maintained code quality through code reviews and automated testing using tools like Jest and Enzyme, achieving 80% test coverage and reducing regression issues by 30%. WTL Full Stack Developer United States 02/2015 - 03/2019 • Developed campaign web pages based on the mockups provided by product managers and UI designers when necessary such as top ten songs every year or campaigns with other partners such as MSN, driving a 30% bump in customer engagement. • Authored high-throughput data scripts and integrated React and Node.Js based dashboards to visualize insights, boosting analytics pipeline speed by 60% and enabling analysis of 10× more data daily. • Scaled services to handle 100 k+ daily requests with sub 200 ms P95 latency on AWS EC2, S3, and Redis caching layers. • Managed AWS infrastructure, including EC2 and S3, resulting in 99.9% uptime and scalable resource management. • Optimized an instrument processing algorithm, shrinking runtime from 18 s to fewer than 5 s for 80 k–90 k records. • Delivered 99.9% uptime by instituting monitoring, auto scaling, and blue-green deployments. • Rolled out feature-flagging with LaunchDarkly, enabling dark launches and cutting hot-fix incidents by 90%. • Authored data-pipeline scripts in Python that accelerated nightly analytics jobs by 40%, unlocking more timely business insights. • Contributed to the 'Jitsi' open-source project by developing new features using React and Django, which improved user experience and system performance 30%. Experience MorningStar Software United States Junior Software Developer 06/2008 - 12/2014 • Delivered a full stack commerce platform with React and Node.js, PostgreSQL, enabling a $100 k Ecommerce start up to launch on schedule. • Developed authentication and user management modules using AWS Cognito and FastAPI. Later, during the development process, changed to PostgreSQL DB-based authentication. Used Twilio and the 'click' library for about 50% of the work, using CLI tools for basic tasks to create features such as MFA. • Created the architecture for the web application, including the database schema, authentication and authorization, front-end framework, and styling library, as well as supporting external APIs and tools, to accommodate 1000 users. • Worked on several Node-based projects integrated with multiple systems and external services, including credit card payments, timesheets, and analytics. • Implemented AWS Cognito–based MFA for over 1,000 users and later migrated to a PostgreSQL-backed authentication system, improving login performance by 35% while strengthening overall security. • Blended over 10 REST and GraphQL APIs with external services like Twilio and Google Maps, enhancing userfacing features and reducing development time for new functionality by 40%. Education University of Belgrade Serbia Bachelor of Science in Computer Science and Engineering Certification - Node.js Application Developer (Opens) - AWS Certified Developer – Associate - Google Cloud Associate Cloud Engineer 09/2004 - 05/2008