Available · roles & projects

Luis Jaller · Full Stack

I build software that solves real business problems.

Specialized in Node.js, TypeScript, NestJS and React. I combine solid architecture with strategic thinking to ship products that scale.

3+years shipping product

10+projects in production

<24hresponse time

Colombia · remote

[ 01 / about ]

Engineering with product vision.

Colombia · Remote, worldwide

GitHub LinkedIn Email

I'm a Full Stack Developer with a strong focus on backend and architecture. I mainly work with Node.js, TypeScript, NestJS, React and Next.js, with experience building everything from MVPs to production systems with microservices, cloud infrastructure (AWS) and CI/CD pipelines.

I don't just write code — I translate business needs into clear digital solutions. I move between product, architecture and execution with the same ease, which lets me ship software that doesn't just work, but drives real impact.

I've worked on cloud-backed platforms with Lambda, SQS, EventBridge and RDS, microservice systems with NestJS and Helm, and full-stack products with Prisma, Expo and React Native. My approach is always the same: clean code, on-time delivery, and technical decisions that solve business problems.

Looking for a developer to join your team or need to build something from scratch? Let's talk →

[ 02 / experience ]

From fundamentals to cloud delivery.

A practical progression from web fundamentals to backend systems, cloud infrastructure and full-stack product work.

2023

Web Fundamentals & First Clients

Started with HTML, CSS and JavaScript, quickly moving into real client work and modern development workflows.

HTMLCSSJavaScript

2023

Backend & DevOps Fundamentals

Built backend services with Node.js and Express while working with Docker, Kubernetes, CI/CD and Terraform on Azure.

Node.jsExpressDockerKubernetesTerraformAzure

2024

Microservices & Delivery

Expanded into microservices with NestJS, deployments via Helm, GitHub Actions and observability with New Relic.

NestJSMicroservicesHelmGitHub ActionsTerraformNew Relic

2025

Cloud Systems on AWS

Worked on AWS-based systems using Lambda, SQS, EventBridge and RDS, all managed via Infrastructure as Code.

AWSLambdaSQSEventBridgeRDSTerraform

2025 – 2026

Product-Driven Full Stack

Shipped product-focused work with React, Next.js, Prisma, Expo and NestJS across frontend, backend and deployment.

ReactNext.jsPrismaExpoNestJSDynamoDBHelm

[ 03 / stack ]

The stack I own end to end.

Modern web applications, backend services and cloud infrastructure. Every tool chosen because it solves a real production problem.

Backend

APIs, services and application logic for production systems.

Node.jsNestJSExpressPrisma

Cloud & DevOps

Infrastructure, deployment workflows and cloud-native delivery.

AWSTerraformDockerKubernetesHelmGitHub Actions

Frontend

Interfaces focused on performance, usability and maintainability.

TypeScriptReactNext.jsTailwind CSS

Databases

Data design and management for high-performance applications.

PostgreSQLDynamoDBRDSRedis

Mobile

Cross-platform mobile development for product-focused apps.

ExpoReact Native

Tooling & Observability

Monitoring, version control and code quality in production.

New RelicGitESLintPrettier

[ 04 / selected work ]

A selection of projects with real decisions and consequences.

Three cases chosen for the clarity of the problem and the technical decision. The rest of the portfolio lives under NDA — available on request.

11+

projects shipped

shown below

NDA

the rest, on request

2026/Full-Stack Developer/Sales OS / CRM for Agencies/● live

HalcónOS

Internal sales operating system: CRM + project manager that centralizes lead capture, automates proposals with AI, and tracks every deal from first contact to project delivery.

halcon-os.vercel.app

/01Problem

Managing 1,461 local businesses without a website, scattered across spreadsheets, with no way to know which prospect to prioritize or what funnel stage each deal was in.

/02Technical decision

Monorepo (bun + Turborepo) with Next.js 15, tRPC and Drizzle on Postgres (Neon), multi-tenant auth via Clerk Organizations, AI-generated proposals and messages (Gemini), and an Expo mobile app. Automatic lead scoring and a Kanban pipeline.

/03Impact

A unified pipeline with score-prioritized leads, sales proposals generated in seconds, and end-to-end traceability from lead to delivered project — all in one place.

Stack

Next.js 15tRPCDrizzlePostgreSQLClerkGeminiExpo

View live site I want a project like this

2025/Full-Stack Developer/Events SaaS Platform/● live

InvitiApp

A platform for event planners and for creating digital invitations: real-time RSVPs, QR check-in, and everything shareable over WhatsApp.

invitiapp.com

/01Problem

Running events meant paper invitations, guest lists in spreadsheets, and RSVPs that were impossible to track. There was no single tool tying together the invitation, guest management, and event day.

/02Technical decision

Next.js web app with 20+ customizable templates, RSVP with custom questions, bulk guest uploads via CSV/Excel, QR check-in on event day, and Lemon Squeezy payments. Deployed on AWS.

/03Impact

From an idea to a production product with free and premium plans, now growing into a full platform for event planners on top of invitations.

Stack

Next.jsReactTypeScriptTailwind CSSLemon SqueezyAWS

View live site I want a project like this

2025/Lead Developer/High-Performance E-commerce/● live

BloomRose

Modern online store with its own brand identity, built to compete with large marketplaces on speed and shopping experience.

bloomroseaccesorios.com

/01Problem

The client needed an online store that could compete with large marketplaces while keeping the identity and control of their own brand.

/02Technical decision

Next.js frontend (SSR/ISR) deployed on Netlify, custom backend on Supabase (Postgres + auth), local payments via Wompi and DNS managed in Route53. Aggressive Core Web Vitals optimization.

/03Impact

Store running 24/7 with a smooth shopping experience that cuts cart abandonment and positions the brand above the marketplace.

Stack

Next.jsNetlifySupabaseWompiSEO

View live site I want a project like this

[ other projects · under NDA ]

Not everything fits on a public page.

These are the other projects I've worked on. I share technical detail, architectural decisions and outcomes in 1:1 conversations.

/04

Enterprise SaaS

Multi-tenant platform on AWS · microservices & CI/CD

Backend Engineer

2024

// NDA

/05

Sports / Analytics

Data product & analysis workflows

Full Stack

2024

// internal

/06

Fintech

Payments integration & reconciliation

Backend Engineer

2024

// NDA

/07

Logistics

Operations & routing system

Full Stack

2024

// NDA

/08

B2B SaaS

Multi-tenant analytics dashboard

Frontend & API

2024

// NDA

/09

E-commerce

Migration to headless architecture

Tech Lead

2023

// NDA

/10

Internal tooling

Operations automation

Full Stack

2023

// internal

/11

Cloud platform

Infrastructure & CI/CD from scratch

DevOps & Backend

2023

// internal

[ next step ]

Want the technical detail of a specific case? I'll walk you through the full documentation on a call.

Request details

[ 05 / services ]

Founders, CTOs, teams without a tech lead

Request this service

[ 06 / why me ]

More than code:
a reliable technical partner.

Whether as part of your team or as an outside consultant, my approach stays the same: solve real problems with technical quality and transparent communication.

/01

Solid Architecture

I build with the future in mind. The platform holds up as users grow — no rewrite needed in six months.

/02

Optimized Performance

A fast product converts more. I make sure everything loads instantly so users don't bounce out of impatience.

/03

Business Vision

I don't just code what you ask — I advise on what actually works to solve the real problem behind the request.

/04

Clean, Maintainable Code

No black boxes. I deliver documented, testable code that any team can maintain without depending on me.

/05

Transparent Communication

Frequent updates, clear expectations and zero surprises. You always know exactly where the project stands.

/06

On-Time Delivery

I plan realistically and hit deadlines. If a risk shows up, I flag it early so we decide together.

[ 07 / methodology ]

From idea to reality in weeks, not months.

An agile, honest workflow designed to remove friction. No unnecessary jargon — just results delivered on time.

Discovery & Scope

I don't start blind. We analyze your business goals, competition and technical requirements to map out a clear path with no budget surprises.

Strategy & Design

We define the visual structure and user experience. Prototypes that don't just look good — they align with your brand identity to sell more.

Transparent Development

I turn the design into clean, functional code. The best part: weekly updates so you see real progress and never feel disconnected.

Launch & Warranty

Thorough testing before go-live. Plus 30 days of post-launch support to keep everything running smoothly as your business grows.

[ 08 / testimonials ]

What people who've worked with me say.

“We built InvitiApp together from scratch. Luis delivered a gorgeous design and a flawless experience. Today InvitiApp is a platform for event planners and for creating digital invitations, with real-time RSVPs, QR check-in, and everything shareable over WhatsApp. He turned the idea into a product people love to use.”

David Uribe

Founder, InvitiApp

“The design Luis gave BloomRose turned out beautiful and the store flies. Since we launched, our sales took off nationwide. Attentive to every detail and always focused on growing the brand.”

Carolina Jaller

CEO, BloomRose

[ last step ]

Ready to build
something solid?

Tell me what you want to build or the team you're putting together. I reply in under 24 hours — no commitment.

Start a conversation

01.Free 30-min discovery call

02.Clear proposal in 48h

03.No commitment, no spam

[ 09 / contact ]

Let's talk
opportunities.

Whether you're hiring a developer for your team or need to build a custom solution — I'm ready to talk.

Direct channels

jallerangel06@gmail.com

Direct email

linkedin.com/in/jallerdev

Let's connect professionally

github.com/jallerangel

The code speaks

What to expect

/01Reply in under 24 hours
/02Available for roles and projects
/03No commitment — let's talk first

I build software that solves real business problems.

[ 01 / about ]

Engineering with product vision.

[ 02 / experience ]

From fundamentals to cloud delivery.

Web Fundamentals & First Clients

Backend & DevOps Fundamentals

Microservices & Delivery

Cloud Systems on AWS

Product-Driven Full Stack

The stack I own end to end.

Backend

Cloud & DevOps

Frontend

Databases

Mobile

Tooling & Observability

A selection of projects with real decisions and consequences.

HalcónOS

InvitiApp

BloomRose

Not everything fits on a public page.

[ 05 / services ]

Digital solutions that solve real problems.

MVP Development

Custom Web Applications

Backend & APIs

Maintenance & Optimization

Automation & Integrations

Technical Consulting

More than code: a reliable technical partner.

Solid Architecture

Optimized Performance

Business Vision

Clean, Maintainable Code

Transparent Communication

On-Time Delivery

[ 07 / methodology ]

From idea to reality in weeks, not months.

Discovery & Scope

Strategy & Design

Transparent Development

Launch & Warranty

[ 08 / testimonials ]

What people who've worked with me say.

David Uribe

Carolina Jaller

Ready to build something solid?

Let's talk opportunities.

More than code:
a reliable technical partner.

Ready to build
something solid?

Let's talk
opportunities.