Senior Software Engineer, Card Authorization

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📍 Remote Pełny etat // WeWorkRemotely 30 wrz 2026

160 000 - 200 000 USD/rok

Java Python Rust Spark

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Headquarters: Remote

Lithic is the modern card issuing and processing platform empowering ambitious financial companies to build the future of payments.

Our infrastructure powers card programs for 100+ innovative clients, from fintechs reimagining credit and digital banking to platforms transforming disbursements and spend management. Companies like Mercury, Flex, and Novo rely on Lithic's developer-friendly APIs, direct network connections, and flawless reconciliation to launch and scale card programs in weeks, not years.

We're building a future where access to better financial products materially improves people's lives, free from the constraints of 30-year-old mainframes and legacy processors. We're proud to be backed by world-class investors who share that vision, including Bessemer Venture Partners, Index Ventures, Spark Capital, Stripes, and Mastercard, along with many others.

We're a team of 170+ across 26 states and 7 countries, headquartered in New York City.

We are hiring a Senior Software Engineer for Lithic’s Card Authorization team, which owns the real-time systems that make every card authorization decision correct, reliable, and fast. The team also owns related fraud tooling, including Lithic’s Rules Engine and 3D Secure integration. You’ll own high-impact projects end-to-end, solve distributed-systems problems at scale, and help build the tools customers use to control fraud and payment risk.

What you'll do:

Write reliable, secure, scalable code for Lithic’s real-time authorization and fraud-prevention systems with minimal tech debt
Build customer-facing features, such as rules improvements, velocity controls, 3DS flows, fraud tooling, and transaction monitoring. Own projects from planning to launch.
Improve the reliability of systems in team’s scope and participate in the team on-call rotation
Lead efforts to improve systems and processes within the team

What you'll bring:

4+ years building production backend systems. Full stack experience is a plus.
Experience in or desire to learn Rust; ability to understand Lithic’s system written in other programming languages (Python, Java)
Interest and experience in leveraging AI tools to enhance productivity
Ability to navigate ambiguity, align diverse perspectives, and drive toward practical solutions
Experience or interest in payments, fintech, fraud prevention.
Comfort with designing systems from scratch and owning the product development process end-to-end
Strong written communication skills and experience working in a remote, async-first team that’s spread across time zones

The annual US salary range for this role is $160,000 to $200,000 plus equity. This salary range may be inclusive of several career levels at Lithic and will be narrowed during the interview process based on the candidate’s experience and qualifications.

This is a remote position. However, candidates must be located in the United States, Canada (Ontario or British Columbia), Netherlands, Poland, or Czech Republic. We do not offer visa sponsorship or assistance.

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Benefits for Full-Time US Employees:

Unlimited PTO
12-weeks fully paid parental leave
4-Week Fully Paid Sabbatical (earned at your 5-year anniversary)
Work From Anywhere: work from anywhere in the world 4-weeks each year
3% cashback on card purchases with your complimentary Privacy.com employee account
Health, vision, and dental insurance; HSA Contribution Match
401(k) match
Voluntary Life Insurance and STD/LTD

NYC-based employees work from our SoHo office three days a week. Tuesdays and Thursdays are our core days, and you'll choose a third day that works for your schedule and team needs.

In-office employees receive:

Commuter benefit
Catered lunch every Tuesday and Thursday

To apply: https://weworkremotely.com/remote-jobs/lithic-senior-software-engineer-card-authorization

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