Software Development Engineer II – Payments

Design, build, and maintain scalable backend systems that reliably manage merchant accounts, transactions, and attribution logic

Partner with business stakeholders to translate requirements into well‑implemented, deterministic workflows and services

Build reliable, fault‑tolerant distributed systems with strong coding, testing, observability, performance, and reliability practices

Contribute to technical design for high‑performance, service‑oriented architectures

Scale backend services and microservices for high throughput and low latency across fast‑growing payment datasets

Bachelor’s in Computer Science or Engineering; 3+ years of experience shipping production payment/fintech systems

Deep understanding of payments infrastructure, including card network flows, authorization/settlement lifecycles, and payment processor/gateway integrations

Ability to quickly learn new payment technologies and apply them to real‑world solutions and product design

Proficiency in Java and the Spring Boot framework; or equivalent expertise in a similar object‑oriented language.

Experience building high‑availability systems, including low‑latency APIs and distributed RESTful/gRPC services; practiced in backward compatibility, deterministic behavior, and idempotency

Solid knowledge of distributed databases and scalable, fault‑tolerant caching

Experience with AI agents and prompt engineering; able to build web features using agentic workflows and modern frontend frameworks

Cloud experience (AWS or GCP), containerization (Docker); familiarity with AWS services such as ECS, RDS, and Kinesis, plus observability tools like Datadog

Preferred: Experience with workflow orchestration engines (Temporal, Cadence, or AWS Step Functions)

$160K - $180K plus stock options

401k with company match

Medical, dental, and vision coverage

FSA, dependent care, and commuter benefits

Paid parental leave and unlimited PTO

TeleDoc, One Medical, Talkspace, and WellHub access

Citi Bike membership

$100 monthly Seated dining credit