Software Engineer - Backend at Cardless | CA, US | Rezi

Software Engineer - Backend at Cardless

Software Engineer - Backend

Cardless · CA, US

Today

Software Engineer - Backend

Cardless · CA, US

6 hours ago
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About the Role

As a Backend Engineer at Cardless, you'll work across the systems that run our partners' card programs, including applications, underwriting, accounts, ledgers, transactions, payments, rewards, risk, and partner-facing APIs. This role is deliberately general, allowing engineers to move to wherever the problem is. The work involves building new features, scaling and hardening existing systems, and laying groundwork for future products. The company values strong systems thinking and problem-solving skills over specific prior experience in payments or lending, though such experience is advantageous. This role is open at multiple levels, from mid-level through staff.

Responsibilities

  • Design and build backend systems that move real money, make credit decisions, and serve hundreds of thousands of cardholders
  • Take projects from ambiguity to production: scoping, design, implementation, testing, rollout, and operational life
  • Work across domains rather than inside a single service, going where the highest-value problem is
  • Partner with product, risk, compliance, operations, and external counterparts to ship within a regulated environment
  • Improve reliability, observability, and developer experience, and enhance existing systems

Requirements

  • Strong systems thinking and problem-solving abilities
  • Ability to reason about unfamiliar systems, identify issues, and make sound decisions with incomplete information
  • Experience building and operating production backend services with a track record of end-to-end project delivery
  • Solid fundamentals in distributed systems, APIs, databases, and infrastructure
  • Proficiency in a modern backend language and ecosystem (Java primarily, Python for data work)
  • Clear communication skills and a focus on correctness
  • Ability to work in-office 5 days a week

Skills

  • Backend systems design and development
  • Distributed systems
  • APIs
  • Databases
  • Infrastructure
  • Java
  • Python
  • Systems thinking
  • Problem-solving
  • Communication
  • Fintech
  • Payments
  • Lending
  • Card issuing
  • Authorization
  • Ledgers
  • Settlement
  • Reconciliation
  • Disputes
  • Regulatory work
  • Workflow orchestration (Temporal, Step Functions)
  • Event streaming
  • Partner-facing APIs

Location

  • San Francisco, CA

Work Type

  • In-office

Experience Level

  • Mid-level
  • Staff

Salary/Compensations

  • $160,000 - $295,000

Benefits

  • Meaningful Start-up equity
  • 100% health, vision & dental primary coverage
  • 75% health, vision & dental dependent coverage
  • Catered lunches
  • $250/month Commuter benefit
  • Parental leave
  • Team building events & happy hours
  • Flexible PTO with a minimum of 15 days off per year
  • Apple equipment
  • 401k plan

About the Company

  • Cardless is building the infrastructure for companies to design, build, and launch their own financial products, enabling brands to create credit cards that feel entirely their own.
  • The company's APIs and components manage the entire customer journey from application to support, while handling lending, compliance, and operations.
  • Cardless raised a $60 million Series C in September 2025, led by Spark Capital, with a total funding of $170 million.
  • The team consists of over 70 people and is scaling toward profitability by year-end 2026.
  • The company culture seeks kind, humble individuals with high standards and low egos, who are passionate about improving products, systems, and teams.