Toronto, Ontario, Canada · Remote OK
$90k–$150k/yr
Who Is Serotonin Serotonin is the top go-to-market firm for transformative technologies, specializing in marketing, strategy, recruiting, and legal services. With a global team of 90 across 15 countries, Serotonin has su…
Skills: Python, Next.js, SQL, REST API, GraphQL API
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Design and maintain end-to-end agentic AI systems and data pipelines to transform multi-source signals into structured intelligence. Build full-stack applications and dashboards that provide actionable insights for marketing and client teams.
Requires fluent Python, full-stack development experience with Next.js, and a proven track record of building production-ready LLM agent systems. Experience with vector databases, RAG, and integrating various social and ads APIs is essential.
Who Is Serotonin
Serotonin is the top go-to-market firm for transformative technologies, specializing in marketing, strategy, recruiting, and legal services. With a global team of 90 across 15 countries, Serotonin has supported over 300 clients in consumer tech, crypto infrastructure, digital assets, venture capital, and AI since its launch in 2020. Delivering end-to-end go-to-market solutions across all major marketing channels, including public relations, growth marketing, on-chain analytics, content, research, social, and design - Serotonin accelerates global innovation. At the core of our business is the Serotonin Platform, serving as a central nucleus for the crypto ecosystem, connecting builders and founders with essential resources to drive business growth.
About the Role
We're building an intelligence layer at Serotonin, and we need someone to own it end to end.
This role sits at the intersection of competitive intelligence, data engineering, and agentic AI. You'll pull signals from social platforms, on-chain activity, and paid media, and turn them into structured intelligence that shapes how we run accounts and campaigns, both internally and for clients.
This is a systems role, not a workflow automation role. You'll design and maintain the data pipelines, agentic workflows, and full-stack applications that make our intelligence capabilities real and repeatable. The best outcome isn't a one-off solution for one team, rather it looks like a system three teams depend on independently six months from now.
You'll work directly with marketing leads and client teams, understand how they actually operate before you build anything, and ship things that are live, used, and measurable.
\nResponsibilitiesSoftware Engineering (non-negotiable)
AI Tooling
On-Chain Data (strong plus)
Dune Analytics or equivalent SQL querying against on-chain data
Familiarity with wallet activity, token flows, and what on-chain behavior signals about an entity or protocol
Not required, but you should be the kind of person who picks up a new data domain fast
Domain
You've built something end to end and you own it, not "contributed to" or "worked on the team that built it," but the person who designed it, shipped it, and is still maintaining it. You care more about making three teams faster than shipping something impressive that one person uses, and your GitHub actually reflects what you can do without needing to be asked for a portfolio.
You've probably come up through a founding engineer role, an early-stage startup, or as an independent builder, ideally somewhere in data, intelligence, or crypto. You pick up new domains fast and use AI as a core part of how you do that. You ship in days, you're not precious about being wrong early, and you know the difference between using AI as a multiplier versus using it to paper over a weak foundation.
We hire people who don't wait to be told what to build next, who take full ownership of their work from idea to maintenance, and who are just as effective working async with someone in Singapore as they are with someone in their timezone.
the marketing and product studio for web3
Bringing the world's breakthrough technologies to market. Serotonin is a marketing firm and product studio for transformative technologies. We bring breakthrough technologies to market and build ecosystems around them. With a team of former executives from ConsenSys, Chainlink, Bridgewater Associates, General Assembly, and more, Serotonin partners with top businesses and entrepreneurs on brand positioning, business partnerships, media relations, content, product marketing, and go-to-market strategy. We combine expertise in financial services, digital assets, and decentralized tech with data-driven methodology to ensure our partners’ marketing and PR is executed flawlessly, driving step-function growth.
Offices: Remote, US
the marketing and product studio for web3
Bringing the world's breakthrough technologies to market. Serotonin is a marketing firm and product studio for transformative technologies. We bring breakthrough technologies to market and build ecosystems around them. With a team of former executives from ConsenSys, Chainlink, Bridgewater Associates, General Assembly, and more, Serotonin partners with top businesses and entrepreneurs on brand positioning, business partnerships, media relations, content, product marketing, and go-to-market strategy. We combine expertise in financial services, digital assets, and decentralized tech with data-driven methodology to ensure our partners’ marketing and PR is executed flawlessly, driving step-function growth.
Offices: Remote, US
