Freddy Sossa

About Me

Hey there! I'm Freddy — a christian, software engineer, bassist, and systems thinker based in Montreal, Canada. I work on financial systems and data reliability, and I'm passionate about building robust, well-architected solutions.

This site is my little corner of the internet where I share my journey, document what I'm learning, write about things I find interesting — in tech, music, faith, and life.

When I'm not coding, you'll find me at church, playing bass, or working on my smart home setup. I believe in learning in public and sharing knowledge with the community.

Experience

2021 - Present

Software Engineer – Financial Systems & Data Reliability

Montreal, QC

Leading data integrity engineering, financial reconciliation, and distributed batch processing (Spark/YARN). Reduced break rates, stabilized ETL pipelines, and strengthened release governance.

2020 - 2021

Backend Developer

Swap Pay

Built backend services for a mobile payment solution using Node.js, Express, and MongoDB. Designed APIs and supported payment flow integrations.

2020

Software Developer Intern

Advantech Taiwan

Contributed to WISE-PaaS IoT platform development and backend features.

2019

Quality Assurance Analyst

Desjardins

Wrote test cases, performed anomaly detection, and contributed to QA process improvements.

Skills

Languages

TypeScript JavaScript Python Scala SQL Java C++

Backend & Data

Node.js Express MongoDB Teradata ETL Pipelines

Distributed Systems

Spark YARN Batch Orchestration Docker

Concepts

Data Integrity Release Governance Systems Architecture

What I'm Exploring

Areas I'm interested in and actively learning about:

AI-assisted anomaly detection LLM APIs & embeddings Financial data observability Smart home infrastructure IoT & embedded systems

Open Source

🔔

Novu — MailerSend Provider

Contributed to Novu (37k+ ⭐), adding the MailerSend email provider with full implementation, tests, and documentation.

View commit →

Get in Touch

I'm always open to discussing new opportunities, interesting projects, or just having a chat. Feel free to reach out!