Payments Engineer
Mercor · San Francisco
CHECKED 22H AGO
Applied AIonsitesenior$160k–$500k
At a glance
Highlights
- Build deterministic payout and settlement infrastructure at massive scale.
- Create immutable, auditable ledger with end-to-end observability for payouts.
- Eliminate manual treasury work by automating reconciliation pipelines.
What they offer
- Bi-annual performance bonus
- Equity grant vested over 4 years
- Up to $15k relocation bonus
- $10K housing bonus near office
- $1.5K monthly meals stipend
- Free Equinox membership
- $200 monthly laundry reimbursement
- $200 monthly wellness reimbursement
- Health, dental, and vision insurance
Ideal candidate
Senior backend engineer with an operational, systems-level mindset who thrives in fast-moving, ambiguous environments and cares deeply about correctness, reliability, and automating financial infrastructure.
Requirements
- 6+ years building scalable backend systems, ideally in payments, fintech, billing or financial infrastructure
- 3+ years owning production backend/platform systems
- Experience integrating and managing third-party payment gateways and banking APIs
- Understanding of PCI-DSS and secure handling of sensitive banking and customer data
- Experience with transactional databases, compiled languages, message queues and distributed systems
- Proven ability to operate production systems under significant load with strong observability
- Comfortable with high intensity in fast-growing, ambiguous environments
- remote policy
- In-person 5 days a week
Lab profile
About Mercor
AI data company organizing human expertise to train frontier models for the AI economy.
What they build
- APEX benchmark family
- Mercor Enterprise
- Human expertise training data platform
Known for
- Massive domain-expert network
- Frontier model training infrastructure
- Real-world professional work evaluation
Key facts
- Millions of domain experts on platform
- Pays over $4M per day to experts