Email: aleksatesicteske@gmail.com
GitHub: github.com/Imafikus
LinkedIn: Aleksa Tešić

Passionate about building good products. Looking for a product engineer role since the intersection between product and engineering is where I thrive.

I consider myself a jack of all trades - I’ve worked on everything, from bare metal deployments to creating decent looking UI on the frontend. At this point I consider myself language agnostic, but my favorite ones are Python and TypeScript. I’ve also extensively used Go.

I spend A LOT of my free time on my side projects (most successful one has 10k users and $400 MRR) and on volunteering, which explains the extensive list of projects and off-work activities you’ll see in the section below.

Education

University of Belgrade, Faculty of Mathematics (2017 – 2021)
Department of Computer Science - Informatics BSc

Experience

Software Engineer - Microsoft (April 2024 – present)

  • Optimized CI/CD pipelines. Reduced total pipeline run time by 10% and compute time used by 20%
  • Improved Microsoft Copilot performance in Word Online by comparing multiple different formats for copilot instructions
  • Working on improving and maintaining tables and lists in Word Online (React)
  • Managed SDK integrations for 15+ internal teams (Excel, AI Hub, Outlook…), ensuring that timelines and best practices are met
  • Created and improved onboarding guide for the newcomers in the team reducing onboarding from 2 weeks to 1 day
  • Added visual coherence features that enabled our partner teams to quickly switch to the new UI

Co-Founder - Notify Me (October 2018 – present)

  • Website monitoring SaaS serving 10,000+ users with 3k monthly visitors and $400 MRR
  • Currently focused on product development, but handling everything from engineering to sales and customer support
  • Wrote all of the frontend code (React + Tailwind) and iterated on it based on the customer feedback
  • Implemented custom agent pipeline to filter relevant site changes and reduce false positives
  • Integrated payment system (Lemon Squeezy) completely from scratch
  • Architected microservice-based system using MongoDB, RabbitMQ, Prometheus and Grafana
  • Migrated infrastructure from GCP to self-managed Kubernetes on Hetzner with < 1h downtime
  • Achieved 2-minute deployment pipeline from commit to production
  • Side Project

Co-Founder - Koferče (January 2025 – present)

  • Travel agency aggregator for Serbian market
  • Wrote custom web scrapers and data pipeline to retrieve offers from 16 different travel sites
  • Implemented custom AI-based filtering and extraction to standardize the data
  • Visitors describe their ideal destination in a few sentences and get matched with appropriate offers
  • Offer matching achieved through vector database and simple RAG pipeline
  • Side Project

Vice President of the Board at Petnica Science Center (PSC) (September 2023 – present)

  • Non-profit educational center that organizes activities for high schoolers and students
  • Co-leading STEM department and serving on PSC board
  • Leading a team of 30 teaching assistants across 4 courses throughout the year
  • Responsible for department budgeting, scheduling, and curriculum development
  • Organizing annual Web3 camp for students. Focused on social media presence and finding sponsors for the camp
  • Contributing to strategic planning and negotiations with sponsors and government officials
  • Implemented donation page with direct bank integration doniraj.petnica.rs
  • Occasional IT support (troubleshooting, workspace administration, laptop setups etc…)
  • Volunteering

SRE & Software Engineer - Tenderly (March 2022 – November 2023)

  • Led internal tooling development and CI/CD infrastructure for the entire company
  • Built and maintained in-house CLI tool that enabled 10-minute deployment pipeline from commit to production
  • Scaled CI/CD pipeline to support 3 Kubernetes clusters and 2x size increase in engineering head count
  • Designed and extended custom configuration system for backend codebase
  • Developed microservices that caught regressions on main backend data pipeline critical to company infrastructure

Devops Engineer - Connect the Dots (September 2021 – March 2022)

  • Led migration from Docker to Google Kubernetes Engine (GKE) infrastructure
  • Implemented distributed tracing to optimize performance and find bottlenecks
  • Developed and improved CI/CD pipelines using GitHub Actions
  • Managed Infrastructure as Code deployments with Terraform

Junior Devops Engineer - Itekako (September 2020 – June 2021)

  • Deployed and managed bare metal infrastructure using Ansible and Vagrant for multiple clients
  • Implemented automated CI/CD pipelines and monitoring solutions for client applications
  • Developed automation scripts using Bash and Python to streamline operations
  • Provided technical support and infrastructure guidance to development teams

Junior Backend Engineer - Penta (now Qonto) (March 2019 – August 2020)

  • Implemented CRUD endpoints and integrated third-party service APIs
  • Migrated parts of the TypeScript codebase from ES5 to ES6 standard
  • Decomposed monolithic architecture into microservices
  • Developed and maintained backend infrastructure