Thomás Sieczkowski is a seasoned software development manager and former CTO with 11+ years building and scaling product-led engineering teams across startups and global platforms. Currently leading Shopify Email and previously creating Shopify Forms, he combines deep product strategy, tech excellence and team health to ship high-throughput systems (Shopify Email sends ~1B emails/month). At Spotify he drove ML-backed acquisition optimizations and led a cross-discipline senior squad to deliver features like Lyrics that materially improved conversion. As CTO of Todo Cartões he scaled systems and people to support ~$200M in gift card transactions and played a direct role in an acquisition due diligence. Comfortable hiring and developing leaders, he blends hands-on architecture judgment with a focus on enabling autonomy and measurable business impact.
11 years of coding experience
9 years of employment as a software developer
Disruptive Innovation / Strategy, Disruptive Innovation / Strategy at Harvard Business School
Bachelor of Science (BS) Information Systems, Bachelor of Science (BS) Information Systems at Pontifícia Universidade Católica do Rio Grande do Sul
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Thomás Sieczkowski - Software Development Manager at Shopify