Codex
Job Title: GTM Engineer
Department: Marketing & Growth
Reports to: Marketing Lead & Sales Lead
Location: Flexible / Remote
About Codex
Codex is building the infrastructure for stablecoin-based cross-border payments — moving money faster, cheaper, and more transparently than the legacy financial system. Backed by Circle, Coinbase, Dragonfly, Wintermute, and Cumberland, we're a small team solving hard problems at the intersection of crypto and global payments.
The Role
Codex is growing fast — new clients, new markets, new financial partners. The pipeline that feeds that growth runs on outbound, and outbound needs a dedicated owner.
As GTM Engineer, you'll build and scale the systems that get Codex in front of the right buyers: PSPs, remittance companies, fintechs, and institutional clients across globally. That means owning the full stack — sending infrastructure, lead sourcing and enrichment, ICP scoring, campaign operations — and delivering qualified meetings to a growing regional sales team.
This is a hands-on builder role that is performance and metrics-driven. You'll inherit a functioning outbound engine and your job is to scale it, sharpen it, and expand it. You’ll start off with being a heads-down operator: running campaigns, maintaining deliverability, iterating on sequences, and making sure what you're sending is converting. As volume grows, the role expands into broader demand generation ownership — new channels, ABM plays, and beyond.
You'll work closely with both the Marketing Lead and Sales Lead, and be a key part of how Codex scales its commercial reach across every region it operates in.
Responsibilities
Outbound Infrastructure & Deliverability
Own the sending infrastructure end-to-end — domain and mailbox management, warmup, deliverability monitoring, and inbox placement across email and LinkedIn campaigns at scale
Maintain and evolve the enrichment and orchestration stack: data sourcing, waterfall enrichment, ICP scoring, and routing logic
Own the sequencer and multi-channel outreach stack (email, LinkedIn, and more) — campaign setup, A/B testing, reply handling, and ongoing optimisation
Ensure no rep or outreach domain/account is double-contacted; build the deduplication and routing logic that keeps the system clean
Lead Generation & Enrichment Pipelines
Build and run automated pipelines for lead sourcing, enrichment, and ICP qualification — using AI/LLM workflows, APIs, and automation platforms
Develop signal- and intent-based prospecting workflows that surface high-fit accounts before they're being worked by competitors
Research and maintain ICP definitions for each regional market
Build personalisation at scale: automated company research, dynamic copy generation, and multi-variable sequence logic
Pipeline Delivery & Sales Alignment
Own the CRM as the operational backbone of the sales and marketing function — maintaining data integrity, pipeline structure, lifecycle stages, and campaign attribution across the full funnel
Own the qualified meeting target: track volumes, reply rates, meeting bookings, and pipeline attribution, and report on what's working and what isn't
Build and maintain the lead routing and handoff logic between outbound systems and the regional sales reps — ensuring warm leads are passed cleanly with full context
Create feedback loops with the sales team: what's converting, what's not, which ICPs are responding, and where copy or targeting needs to change
Support reactivation campaigns for dormant accounts and inbound leads that haven't converted
Systems & Automation
Own the integration layer between outbound platforms and our CRM — data hygiene, attribution, and campaign reporting
Build automation workflows that reduce manual work across the marketing and sales function without sacrificing quality or personalisation
Stay current on the GTM tooling landscape and proactively propose and test new tools, signals, and approaches
What We're Looking For
3 to 5 years of hands-on GTM engineering, growth, or outbound experience at a B2B fintech, payments company, or SaaS business — or as a GTM engineer at an outbound agency running campaigns across multiple B2B clients
Built or meaningfully scaled an outbound motion with pipeline numbers you can defend: sending volumes, reply rates, meetings booked, pipeline influenced
Daily hands-on with modern GTM stack: Enrichment/orchestration, email sequencers, LinkedIn automation, CRM, and deliverability at scale
Strong automation and integration skills — you build the plumbing, not just the campaigns
AI-native in how you work — LLMs and automation are your default operating mode, not a line on your CV
Startup or agency background where you were the builder, not one seat in a large organisation
Nice to Have
Background in fintech, payments, stablecoins, or crypto — ideally with outbound aimed at PSPs, remittance companies, neobanks, or institutional buyers
Experience with signal- or intent-based prospecting workflows
Familiarity with the cross-border payments ecosystem and the buying behaviour of the clients Codex sells to