🟢 Open to opportunities

Mykolas Perevicius

Full-Stack Engineer |

I thrive at the intersection of backend rigor and frontend empathy, shipping production code that helps everyday people get more done with less friction.

Live GitHub Metrics

Experience

2025 - Present

CTO & Lead Developer

  • Architected and deployed full-stack tax preparation portal (tapiatax.com) with secure document management, client workflows, and real-time collaboration for small business clients
  • Designed RESTful API layer and relational database schema (Supabase/PostgreSQL) handling sensitive PII with role-based access control and encrypted storage
  • Integrated TypeScript/React 19 frontend with backend services; deployed cloud-native application on Vercel with CI/CD automation
React 19 TypeScript Supabase PostgreSQL Tailwind CSS Vercel
Oct 2025 - Feb 2026

Software Engineer

  • Spearheaded test-driven development initiative for a Django SaaS platform serving 17,000+ students across multiple school districts, increasing backend coverage with 1,500+ tests (unit, E2E, frontend walkthroughs)
  • Built automated testing infrastructure using pytest, Playwright, Factory Boy, and Faker, including BFS-based route discovery that achieved 96% frontend coverage with video-recorded test runs
  • Full-stack contributions across Django REST Framework, PostgreSQL, Redis, Celery, and Django Channels (WebSockets), with integrations to Google Workspace, Stripe, and Dell Warranty APIs
  • Implemented CI/CD pipelines with GitHub Actions and Docker for automated test execution, coverage reporting, and deployment validation
Django REST pytest-django PostgreSQL Redis Celery Docker
Jun 2023 - Aug 2023

Software Engineer (Internship)

  • Built securities analysis platform that reduced reconciliation time by 60% for 20+ wealth advisors
  • Optimized SQL Server queries and indexes, cutting report generation latency by 45%
  • Delivered AI Tech Talk to 100+ employees on practical ML applications
  • Developed and tested full-stack C#/.NET & React features for critical internal securities management platform
C# .NET Core React 18 SQL Server Redis
Dec 2022 - Jun 2023

Curriculum Developer & Instructor

The Coding Place
  • Created 117 Jupyter notebooks covering Python from basics to GPU programming
  • Achieved 90% student certification rate (PCEP/PCAP) across 120+ students
  • Designed and taught 30+ hours of comprehensive coursework covering Web Development, OOP, and Data Structures & Algorithms
  • Built automated testing pipeline with GitHub Actions for student code evaluation
Python Jupyter GitHub Actions JavaScript TypeScript
Dec 2019 - Oct 2025

Software Engineer

Project Innovate Newark
  • Developed and launched event-planning suite using React, Node.js, and PostgreSQL, reducing scheduling conflicts by 30% across 9+ programs
  • Implemented Docker for containerization, significantly reducing release cycles from days to hours
  • Established role-based access control and JWT authentication, achieving zero critical findings in penetration testing
  • Contributed to increasing data reporting efficiency by ~30% through modular UI elements and RESTful API integration
React Redux Node.js PostgreSQL Docker AWS
Sep 2021 - Sep 2022

Research Intern

  • Prototyped embedded systems incorporating GUIs and machine vision capabilities for robotics applications
  • Engineered CNN-powered recycling-bin prototype attaining 95% material-detection accuracy
  • Built Arduino-based EV GUI that boosted converted pickup truck range by approximately 20%
  • Systematically collected, cleaned, processed, and analyzed experimental data using Python libraries
Python Arduino CNN Computer Vision

Featured Projects

stocksandoptions.org

Interactive stock vs options calculator helping employees visualize equity compensation tradeoffs. Real-time calculations with customizable scenarios.

Finance Interactive
React TypeScript Finance

Education Playground

Interactive Python learning platform with 117 Jupyter notebooks. Covers basics to GPU programming with 90% student certification pass rate.

117 Notebooks 90% Pass Rate
Python Jupyter Education

Distributed AlexNet

Custom CUDA kernels and MPI orchestration for AlexNet training. Achieved 4.6x speedup over baseline PyTorch on DGX-1 cluster through optimized memory coalescing and multi-GPU coordination.

4.6x Faster Multi-GPU
CUDA C++ MPI PyTorch

Piano Keyboard Trainer

Interactive piano learning application with real-time feedback. Practice scales, chords, and songs with visual guidance and progress tracking.

Interactive Real-time
JavaScript Web Audio API Canvas

Video Frame Interpolation

ML-powered video frame interpolation for smooth slow-motion effects. Generates intermediate frames using deep learning to increase video frame rates.

ML-Powered Video Processing
Python PyTorch Computer Vision

Koala's Forge

Free, cross-platform system installer supporting 100+ applications. Automated package management with dependency resolution and rollback support.

100+ Apps Cross-platform
PowerShell Bash Python

Rosetta

In Progress

Multi-language compiler targeting 10+ languages including C++, Rust, Python, Java, Kotlin, Haskell, OCaml, and Assembly. Exploring compiler design from lexing to code generation.

10+ Languages Compiler Design
C++ LLVM Compilers

Let's Connect

I'm currently exploring opportunities where deep systems work meets impactful user experience. If your team is uniting robust infrastructure with intuitive applications, let's talk.

Get In Touch

Have a project in mind or want to chat? Let's connect!

mykolas@perevici.us:~$ whoami
> Full-stack engineer shipping code that matters
mykolas@perevici.us:~$ ls projects/
> distributed-alexnet/ koalas-forge/ education-playground/ piano-trainer/
mykolas@perevici.us:~$ cat philosophy.txt
> "Ship fast. Test everything. Impact users."
> Press ESC or click outside to close