Nils Alexandre Bergsten

Rising Codementor

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ABOUT ME

Full Stack Developer

Senior Software Engineer with 12+ years building large-scale production web applications. Deep expertise in Python (Django, FastAPI) and modern JavaScript frameworks (Vue.js, React), with full-stack range across Node.js and PHP.

I started in backend PHP, moved into frontend as JavaScript matured, and later became full-stack after co-founding a software agency in 2020 — leading engineering across dozens of projects, from creator platforms processing millions in transactions to LMS solutions for higher education.

Since 2024 I've worked with international teams delivering measurable outcomes: cut an inherited bug backlog by over 90%, implemented SAML-based SSO, led a provider migration from Okta to Microsoft Entra, and more recently shipped RAG pipelines and LLM integrations in production.

I'm especially strong at parachuting into unfamiliar codebases — debugging, refactoring, and shipping fast without breaking things. Comfortable in Scrum and async remote workflows, and I use AI-assisted development as a core part of my process, treating it as a multiplier for technical judgment rather than a replacement for it.

Portuguese, Spanish, English

Brasilia (-03:00)

Joined November 2017

EXPERTISE

PHP

10 years experience

Experience with websites, enterprise applications and RESTful APIs, with solid understandings of OOP and design patterns.

PHP MySQL

JavaScript

10 years experience

I have a lot of experience in JavaScript, jQuery and AngularJS. I have developed many mobile apps with Ionic Framework.

Apache cordova JavaScript Angular

Apache cordova JavaScript Angular jQuery AJAX Ionic

10 years experience

5 years experience

5 years experience

3 years experience

10 years experience

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE

GitHub

feature-voter

A feature voting and request system where users can submit ideas, view a ranked list, and upvote their favorite features.

TypeScript

pdf2course

Transform PDFs into Duolingo-style gamified courses using AI. Upload a PDF, get a structured course with modules, lessons, and exercises. Features RAG-powered content generation, admin review workflow, and progress tracking. Built with Nuxt 4, TypeScript, PostgreSQL, and BullMQ.

Vue

EMPLOYMENTS

Co-founder & Senior Software Engineer

NRE

2020-12-01-Present

Co-founded a software agency and led full-stack engineering across multiple production applications using Python/Django, Vue.js, ...

Co-founded a software agency and led full-stack engineering across multiple production applications using Python/Django, Vue.js, React, and AWS infrastructure.
Led the evolution of the Looma platform from MVP to a multi-tenant white-label SaaS marketplace using Python/Django and Vue.js, enabling digital businesses to sell courses, subscriptions, live events, and digital products, growing to thousands of active users and processing hundreds of millions of dollars in transactions.
Developed educational platforms for universities and online education businesses using Django and modern JavaScript SPAs (Vue.js, React), several of which scaled to tens of thousands of paying users.
Developed CMS-driven institutional websites and news portals with Django, delivering content management solutions for large organizations — collectively reaching millions of pageviews across the portfolio.
Partnered with designers and product owners to shape requirements, drive backend domain modeling, and align technical decisions with real user needs across multiple concurrent projects.
Mentored junior developers and established Vue.js frontend best practices around component architecture, reusability, and modern development workflows, improving codebase maintainability and accelerating delivery across the team.
Part-time since August 2024

HTML/CSS

Python

Django

HTML/CSS

Python

Django

Git

PostgreSQL

React

JavaScript

Mentoring

Nuxt.js

RESTful API

Vue.js

SCSS

Sass

Senior Software Engineer

BairesDev

2026-03-01-2026-05-01

Joined a client-facing engineering team assembled for a Fortune 500 engagement.
Developed an internal AI-powered full-sta...

Joined a client-facing engineering team assembled for a Fortune 500 engagement.
Developed an internal AI-powered full-stack application using TypeScript and the Node.js ecosystem, collaborating on modern web architecture and AI-assisted workflows
The client project was discontinued before full kickoff, resulting in the dissolution of the team.

HTML/CSS

Python

Node.js

HTML/CSS

Python

Node.js

PostgreSQL

WebSocket

TypeScript

React

JavaScript

Nuxt.js

Vue.js

Langchain

Ai/llm apis

Full Stack Engineer

Intelycx

2024-08-01-2025-12-01

Developed and maintained a real-time industrial production monitoring platform featuring dashboards, KPIs, statistical analytics,...

Developed and maintained a real-time industrial production monitoring platform featuring dashboards, KPIs, statistical analytics, machine log tracking, digital forms, SSO, ticket management, and SQL/NoSQL data stores.
Extended Django backend services using Django REST Framework (DRF), integrating SQL and NoSQL databases in an AWS-hosted environment.
Refactored the backend by migrating from GraphQL to a RESTful API architecture and introducing a layered architecture based on Service and Repository patterns, improving maintainability and establishing a foundation for future development.
Implemented SAML-based Single Sign-On (SSO), integrated the platform with Microsoft Entra ID, and conducted the migration from Okta to Microsoft Entra authentication.
Acted as a bridge between engineering and product by translating complex technical behavior into business language, supporting product decisions, and producing comprehensive documentation for complex legacy features that had little or no prior documentation.
Rebuilt the frontend UI from the ground up, replacing default Vuetify components with custom implementations based on Figma designs and laying the groundwork for the Vue 2 → Vue 3 migration.
Systematically resolved frontend and backend defects, reversing the project's bug trend. After joining the team, the number of open Jira bug tickets consistently declined, reducing the legacy backlog by more than 90% to nearly zero.

HTML/CSS

Python

Django

HTML/CSS

Python

Django

PostgreSQL

Unit Testing

Debugging

WebSocket

NoSQL

Elasticsearch

Socket.IO

Celery

Docker

Code Refactoring

Code Review

JavaScript

GraphQL

RESTful API

Vue.js

SCSS

PROJECTS

LoomaView Project

2024

Python

Django

SPA

Python

Django

SPA

JavaScript

Vue.js

Sass

Vivendo as EscriturasView Project

2023

Python

Django

SPA

Python

Django

SPA

JavaScript

Vue.js

Sass