The role
You will be one of the first engineers, with responsibility for whole systems rather than tickets: the services behind quotes, conversions and payouts across 36 currencies, the API partners integrate with, and the integrations with banks, payment providers and custody partners.
You will also build the runtime our AI agents use to run onboarding, compliance and payments operations with a person approving, and the foundations for agentic payments.
What you'll own
01Payment core
Quotes, conversions and payouts across 36 currencies, built to be correct first.
- Design the services for quotes, conversions, payouts and webhooks
- Build the public REST API partners integrate with: idempotent, versioned, with a sandbox that behaves like live
- Keep the ledger and reconciliation right to the cent
- Handle failure well: retries, timeouts, partial fills, provider outages
Success looks likeEvery payment reconciles to the ledger with no manual fixes.
02Provider integrations
Banks, payment providers, custody and liquidity partners behind one abstraction.
- Integrate payment providers, local rails such as SEPA, Faster Payments and SWIFT, and custody partners
- Build the provider layer so a new rail or partner is configuration, not a rewrite
- Work with stablecoin settlement and on-chain transfers
- Monitor every route for cost, speed and failure rate
Success looks likeA new provider integrated in weeks, not quarters.
03AI agents in production
Onboarding, compliance review and payments operations run by agents, with a person approving.
- Build the agent runtime: tools, permissions, audit trail and human approval steps
- Ship agents for corporate onboarding, transaction monitoring and payments ops
- Write evals and guardrails, and run them in CI
- Track cost, latency and error rate per agent
Success looks likeCases closed by agents at the same or lower error rate than manual.
04Agentic payments Next on the roadmap
Next on the roadmap: software agents that move money inside limits a business sets.
- Build spend policies: scopes, limits, allowlists, approvals, revocation
- Implement agent identity: proof of who an agent acts for
- Build the sandbox where agent builders test before going live
- Support the protocols we choose first
Success looks likeFirst agent-initiated payout in the sandbox, inside a policy a business set.
What you'll bring
Tap the ones that are true. Most of them is enough to apply.
Nice to have
- Stablecoins, smart contracts or on-chain transfers
- Integrations with banks or payment providers
- Security: key management, custody, MPC
- Agent frameworks, MCP or agentic payment protocols
Your first 90 days
- Days 1–30Learn the rail
- Ship to production in your first weeks
- Walk a payment end to end and map every failure path
- Pick the first agent workflow with the team
- Days 31–60Own a service
- Own one core service end to end
- First agent in production, human approving
- Set the alerts and dashboards you want on call
- Days 61–90Shape the platform
- Write the technical plan for the next two quarters
- Agent runtime design reviewed and started
- Help hire the next engineer
What we offer
- Salary and founding-team equity. Discussed openly in the first conversation, confirmed in writing at offer.
- Remote-first. Work from where you do your best work.
- Ownership. A whole surface, with the metric that proves it.
- AI-native tools from day one. Agents in the workflow, not on a slide.
- Fast decisions. No layers between a good idea and shipping it.
How we hire
- ApplyYour profile, 2–3 cases and what you learned from them.
- Intro call30 minutes on culture and industry fit.
- Live problemA real problem, solved together in real time, through to how you would make it real.
- Final interviewMeet the team you would work with. You interview us too.
- OfferSalary, equity and start date in writing, walked through line by line.
We reply to every application within 2 days, including a no.
About Modality
Modality is a stablecoin settlement layer for cross-border payments: 36 account currencies, 630 direct pairs and 24/7 settlement, with no local entity and no pre-funding for our clients. Modality is a technology provider, not a bank. Licensed partners hold client funds and run payment, custody and exchange under their own licences.