Artem

Artem Mishurchenko
Full Stack Developer | Software Engineer

About Me

Hello!
I'm Full Stack Developer with experience in building web applications using JavaScript, Golang and Python.
Full Stack Software Engineer with 5+ years of experience building production systems across web and mobile.
Focused on backend architecture, performance, and reliable delivery.

Work Experience

Full Stack Software Engineer
NDA | 2025 - Present

Designed and implemented a custom access-control API for 1Password using Nginx + OpenResty (Lua) to
enforce fine-grained permissions, reduce operational overhead, and lower licensing costs by minimizing the
number of required 1Password users.
Participated in an urgent database security hardening initiative: restricted direct database access by enforcing
IP whitelisting, impacting 300+ services.
Coordinated and implemented a large-scale credentials rotation across all affected services; introduced CI/CD
pipelines for multiple legacy services that previously lacked automated deployment.
Solved connectivity issues for Google Cloud Functions by configuring dedicated outbound IP addresses to
maintain database access under the new network restrictions.
Implemented role-based database access by creating read-only users for authorized personnel and enforcing
access through VPN.
Successfully delivered the entire migration and security lockdown overnight, collaborating closely with a
DevOps engineer, under strict time constraints following an employee offboarding event.
Implemented an end-to-end encrypted messaging system based on the Signal protocol, using PKI, ECDSA,
ECDH, Double Ratchet, and ChaCha20-Poly1305.

Full Stack Software Engineer
Lexima Tech | 2021 - 2025

Participated in infrastructure and cloud-related tasks: deployed applications, configured CI/CD pipelines,
supported cloud migrations, and designed and maintained ~200 Google Cloud Functions as part of a serverless
architecture.
Maintained and optimized databases with 10M+ records, ensuring data integrity and acceptable query
performance.
Assisted in migrating databases and services from Heroku to DigitalOcean, and source control workflows from
GitHub to GitLab.
Developed an internal browser extension used by 200+ employees.
Actively collaborated with product, marketing, and operations teams: participated in regular stakeholder
meetings, gathered requirements, consulted other departments on adopting new tools and technologies, and
authored technical specifications.
Acted as a mentor for new team members: conducted code reviews, assisted with onboarding, and supported
QA during testing cycles.

Full Stack Software Engineer
KlientWave - Digital Marketing Agency | 2019 - 2021

Created and maintained Telegram bots with 50,000+ monthly active users.
Performed R&D activities: evaluated new technologies, analyzed their pros and cons, and presented findings to
the engineering team to support technical decision-making.
Took part in infrastructure and cloud-related tasks (without a dedicated DevOps role): deployed applications to
servers, configured CI/CD pipelines, and participated in cloud migrations and infrastructure hardening.
Implemented an internal accounting system for financial tracking and reporting.

Skills

Frontend Backend Tools

▹ JavaScript / TypeScript ▹ Golang / Fiber ▹ Git / GitHub / GitLab

▹ React / SolidJS ▹ Python / Django ▹ Docker / Kubernetes

▹ React Native / Astro ▹ PostgreSQL / MongoDB ▹ CI/CD

▹ HTML5 / CSS3 ▹ Redis / MySQL ▹ GCP / DigitalOcean

▹ Tailwind CSS / Bootstrap ▹ Kafka / RabbitMQ ▹ Linux / Bash

▹ Electron / Vite ▹ REST API / GraphQL ▹ Cryptography

Contacts

Email: GitHub: LinkedIn:
[open contact info](look above in the "contact info" section) github.com/LD31D artem-mishurchenko

Telegram: My Blog: My Site:
@LD31D blog.ld31d.tech ld31d.tech