Staff Backend Engineer, Payments, Consumer Apps - Klover

About the role

The Klover Backend Engineering team powers one of the fastest-growing consumer fintech apps in the U.S., with over one million active users every month. Our systems process and move more than $1.5 billion annually - enabling real-time access to earned wages, rewards, and financial tools that help consumers improve their day-to-day lives.

Responsibilities

• Design and scale the backend services that drive Klover’s payments and data infrastructure.
• Work on high-availability systems that connect with financial institutions and payment processors, ensuring secure, compliant, and lightning-fast transactions.
• Build and evolve microservices that handle high-volume financial and transactional data.
• Design and implement APIs that securely connect to third-party payment processors, banks, and fintech partners.
• Write thoughtful & quality code that is readable, testable, and easily maintainable.
• Develop data-driven services that power account management, transaction history, and financial insights.
• Strive for excellent development practices and careful code architecture that is built around rapid releases.
• Work cross-functionally with backend, mobile, and product teams to consistently release high-quality, customer-focused financial features.

Requirements

• You are excited to build and scale backend systems that support financial products and real-time payments.
• You thrive in environments where data integrity, security, and performance are critical.
• You are excited to build microservices using Rust and Go.
• You have a willingness to learn and teach in a collaborative environment.
• You’re eager to leverage and develop using AI tools.
• You’ve been complimented on how well you participate in an open feedback environment.

Qualifications

• 5+ years of experience building backend services in production environments.
• Experience in the financial technology, payments, or banking systems industry.
• Familiarity with compliance, security, and data privacy standards (e.g., SOC 2, PCI DSS, GDPR).
• Experience designing transactional and event-driven systems for payments, reconciliation systems, or ledger-like applications.
• Familiarity with microservice or Service-oriented Architecture.
• Experience using gRPC, protobuf, or GraphQL.
• Expert knowledge of SQL and experience designing data models for financial data integrity.
• Experience with message queues or event streams (e.g., Kafka, RabbitMQ).
• Experience with cloud environments such as AWS, GCP, or Azure.

Skills

• Rust microservices
• Go
• gRPC, protobuf, or GraphQL
• SQL
• Kafka, RabbitMQ
• AWS, GCP, Azure

Benefits

Attain offers a competitive benefits package including health insurance, retirement plans, and paid time off.

Pay

Competitive compensation based on experience and qualifications.

Schedule

Attain Office Hybrid Schedule (where applicable): 4 days in-office; 1 day remote