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