Sebastian A. in

Sebastian A.

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Senior Engineer, Financial Services at Shopify
📍 Canada

Sebastian is a Senior Engineer in Financial Services at Shopify, with a background from the University of Toronto. He specializes in building comprehensive financial suites for merchants. He previously co-founded Valari, a YC-backed startup focused on embedded banking, showcasing his deep expertise in fintech infrastructure and real-time payment systems.

Outside of his direct engineering work, Sebastian has a strong interest in entrepreneurship, stemming from his involvement in The Entrepreneurial Society during university. He also appears engaged with the technology scene in Mexico, actively promoting major tech events and discussing regional financial systems.

He was one of the first four employees at Relay Financial, helping scale the product and team from the ground up.

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Experience
8 Years
Current Role
Senior Engineer, Financial Services
Job Level
Middle
Location
Canada
Personality Overview

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Communication Style
Decision Approach
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Priorities

Topics Sebastian cares about

Embedded Banking
Co-founded Valari (YC W22) to build developer-friendly APIs and SDKs for businesses to launch financial services, indicating deep expertise in this area.
Fintech for SMBs
His work at Shopify and Relay Financial is centered on providing financial tools (banking, capital, payments) to help small and medium-sized businesses grow.
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Career

Work history

5-2025
Senior Engineer, Financial Services
Shopify
4-2022 - 3-2025
Co-Founder / Head of Engineering
Valari (YC W22)
5-2019 - 5-2022
Software Engineer
Relay Financial
5-2017 - 5-2019
Full Stack Developer
IBM
In the press

Media appearances

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Education
2022 - 2022
Education details unavailable
Y Combinator
2014 - 2018
Bachelor of Science (B.S.)
University of Toronto
2001 - 2014
High School
Colegio Alberto Einstein
Social presence
in
Behavioral profile

DISC profile (public)

DISC behavioral profile

Dominance, influence, steadiness, and calculativeness scores with guidance on how this person prefers to communicate and decide.

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