Lithic creates card issuing and payment infrastructure for technology companies that just works. We help some of the world’s fastest-growing digital banks, fintech companies, and software companies process billions in transactions annually.
We are hiring a Senior Software Engineer for our Authorization team. The Authorization team builds Lithic’s card authorization system and fraud prevention tooling and owns some horizontal layers of Lithic’s API processing (e.g. our API gateway). You'll split your time between writing code and technical leadership. You'll become an expert in card payments, solve distributed systems problems at scale, and contribute to both architectural and product decisions. The team is distributed across the US and Europe and primarily uses Rust.
Job responsibilities:- Write reliable, secure, and scalable code for Lithic's products with minimal tech debt
- Ensure high reliability and correctness for Lithic’s card payment authorization
- Own projects from planning to launch, keeping stakeholders informed and aligned along the way
- Engage in design discussions and collaborate across teams to build well-reasoned solutions
- Lead efforts to improve systems and processes within the team
- Participate in the team on-call rotation
- 4+ years experience shipping code and leading projects in fast-paced production environments
- Experience in or desire to learn Rust
- Strong distributed systems instincts and design skills
- Ability to navigate ambiguity, align diverse perspectives, and drive toward practical solutions
- Interest and experience in leveraging AI tools to enhance productivity
- Excellent communication skills
- Growth mindset and continuous desire to learn and improve
- An interest in fintech and the payments space is preferred
Base salary for US candidates: $160,000 - $190,000
- Health, vision, and dental insurance; HSA Contribution Match
- Unlimited PTO
- 401(k) match
- Voluntary Life Insurance and AD&D
- 3% cashback on all Privacy purchases
- 12-weeks fully paid parental leave
- Work From Anywhere: work from anywhere in the world 4-weeks each year
- 5-Year Fully Paid 4-Week Sabbatical Program
We believe in-person collaboration boosts creativity, communication, and agility, which are key to our growth. Employees in the NYC area are asked to work from our SoHo office three days a week - Tuesdays and Thursdays are core in-office days - the third is flexible.
In-office employees receive:
- $50/month towards your commute
- Free lunch every Tuesday and Thursday
Top Skills
What We Do
Before Lithic, we started Privacy.com in 2014 to build the safest and easiest way for consumers to pay online. We worked with a legacy issuer processor and it took us over a year to launch our card program. Even after we were up and running, scaling and ongoing maintenance were a pain—batch processing delays, scheduled downtime windows, and black-box systems we couldn't debug.
From this experience, we learned firsthand that the financial services supply chain is broken—in the United States, the industry is still dominated by 30-year-old companies that run on mainframes.
So we built Lithic, the issuing and processing infrastructure we always wanted, with developer-friendly, modern, well-documented APIs, insanely fast speed-to-market, and flawless reconciliation—purpose built to give card issuers extremely high levels of observability, control, and flexibility over their card programs. We own the entire technical stack: direct connections to Visa, Mastercard, and Amex, our own authorization engine delivering sub-100ms responses, an immutable ledger system, and real-time webhooks for every transaction event.
Today, we power card programs for 100+ innovative companies including Mercury and Privacy.com—maintaining 99.99+% uptime without maintenance windows while processing billions in payment volume. And we're just getting started.
Lithic currently has 150+ employees in 26 states and 6 countries, with an HQ in NYC, backed by Bessemer, Index, and Stripes.
Why Work With Us
Our team is at the center of everything we do. But we know that work isn't everything, we value flexibility and quality benefits. We strive to be a place where you know your ideas are always heard, you and your teammates learn from each other and make each other better, and you know your work is impacting users and the industry at large.
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