Looking for a job

Daniel Martin

@danielmartin2

Senior Software Engineer with 10 years of experience building scalable web, mobile, and SaaS solutions, passionate about clean, impactful code.

United States

Message

What I'm looking for

I am looking for a role that values innovation, collaboration, and offers opportunities for growth.

I’m Daniel Andres Cubillos Martin, a Full Stack Software Engineer with 10+ years of experience building scalable mobile, web, SaaS, and enterprise applications. My background spans industries from mobile-first startups (Hack/House) to enterprise real estate platforms (Keller Williams), SaaS product development (Sarchiteck), and Web3/blockchain applications (Altoros).

I specialize in delivering end-to-end solutions — from intuitive, high-performance frontends with React, Angular, Vue, and Web3.js to robust backend systems built in Go, Python (FastAPI, Django), Ruby on Rails, C# .NET, and Node.js. Skilled in REST, GraphQL, microservices, and cloud-native architectures (AWS, GCP, Azure), I’ve helped companies modernize legacy systems, launch multi-tenant SaaS platforms, and scale products to support thousands of users securely.

Beyond technical expertise, I bring experience in e-commerce SaaS, subscription platforms, and real-time applications, with a proven record of improving performance, reducing costs, and driving adoption. I thrive in cross-functional teams, bridging product vision with technical execution to deliver measurable business results.

Experience

Work history, roles, and key accomplishments

Sr. Software Engineer

Hack/House

Nov 2022 - Jul 2024 (1 year 8 months)

Led development of a cross-platform mobile app using React Native, improving performance and reducing crashes by 35% through optimized state management.
Designed and implemented backend services in Go and Python FastAPI, handling authentication, real-time notifications, and user activity tracking.

Sr. Software Developer

Keller Williams Realty, LLC

Dec 2020 - Sep 2022 (1 year 9 months)

Developed enterprise real estate applications with React, GraphQL, and C# .NET microservices, and built Python FastAPI APIs for large-scale data workflows. Migrated legacy systems to microservices, reducing downtime by 25%. Delivered reusable React components and real-time property features, driving 25% higher platform adoption.

React GraphQL Redux C# .NET Python fastAPI NodeJS RESTful APIs GraphQL APIs Data Modeling Azure Kubernetes Docker API Gateway Monitoring SQL Server PostgreSQL Elasticsearch OAuth JWT

Software Developer

SARCHITECH LTD

Jun 2017 - Aug 2020 (3 years 2 months)

Built full-stack SaaS platforms with Vue.js, Ruby on Rails, and Node.js microservices. Designed GraphQL APIs to simplify integrations and architected a multi-tenant SaaS system serving thousands securely. Migrated monoliths to Docker/Kubernetes microservices, boosting scalability, and delivered real-time KPI dashboards that cut inefficiencies by 20%.

Vue.Js TailwindCSS Ruby on Rails NodeJS GraphQL SaaS Microservices Docker Kubernetes API Gateway Kafka RabbitMQ REST APIs PostgreSQL MySQL MongoDB Kibana Elasticsearch

Frontend Developer

Altoros

Apr 2015 - Apr 2017 (2 years)

Developed dApp frontends with React, Redux, and Web3.js, focusing on usability for non-technical users. Integrated Ethereum smart contracts into responsive UIs, enabling wallet connections, token transfers, and marketplace interactions. Optimized performance in blockchain-heavy apps, cutting load times by 30%.

React Angular Vue.Js TailwindCSS Bootstrap jQuery NodeJS Django Ruby on Rails RESTful APIs GraphQL APIs Ecommerce Scalable Systems PostgreSQL AWS EC2 Lambda Docker Nginx CI CD Pipelines Google Analytics Mixpanel

Education

Degrees, certifications, and relevant coursework

The Hong Kong University of Science and Technology

Bachelor's Degree, Information Technology Project Management

2011 - 2014

Completed a Bachelor's Degree in Information Technology Project Management. The curriculum focused on managing IT projects, including planning, execution, and delivery.