Attain · 1 day ago
Staff/Senior Backend Engineer, Payments, Consumer Apps - Klover
Chicago, IL
Full-time
Hybrid
Senior Level, Lead/Staff
5+ years expAttain is a leading company in the fintech space, powering one of the fastest-growing consumer apps in the U.S. as part of their Klover Backend Engineering team. The role involves designing and scaling backend services for payments and data infrastructure, ensuring secure and efficient transactions for users.
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Responsibilities
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
Adhere to, and improve upon, our agile process through requirement documents, sprint retrospectives, and other regular cadence meetings
Qualification
Required
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
Preferred
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
Company
Attain
Attain is an outcomes driven platform enabling marketers with better data to achieve their goals
51-200 employees
H1B Sponsorship
Attain has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2024 (1)
Funding
Current Stage
Growth StageTotal Funding
$92.95MKey Investors
Mercato PartnersLightbank
2022-11-01Series B· $25M
2021-08-12Series A· $60M
2020-11-05Seed· $4M
Leadership Team
B
Brandon Ricciardi
Chief Commercial Officer
Colette Freeman
Chief People & Administrative Officer
Recent News
2026-01-07
GlobeNewswire
2025-12-17
Company data provided by crunchbase