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.
Position: Senior Software Engineer, Processing
Location: Remote
We are hiring a Senior Software Engineer for our Processing team to lead Lithic’s next phase of growth.
The Processing team builds and maintains the real-time interfaces between Lithic and external payment networks. Every card authorization, clearing message, and settlement file flows through systems this team owns. The team manages both online and batch transaction flows across Mastercard, Visa, and Amex, along with transaction enrichment, disputes processing, and network compliance. The systems we maintain have strict latency and uptime requirements, because they sit on the critical path for every card transaction. The team also manages the physical network peering with card network partners, so infrastructure and networking expertise are important. The team primarily uses Java, Python, and Kotlin on AWS.
What You'll Do:- Ensure high reliability, low latency, and correctness for Lithic's transaction processing interfaces and related services
- Develop new capabilities across authorization, clearing/settlement, disputes, and network integration surfaces
- Ensure that the team is delivering reliable, secure, and scalable code with minimal tech debt
- Evolve the infrastructure supporting physical network peering with card network partners, ensuring connectivity, failover, and capacity meet reliability requirements
- Own initiatives from planning to launch, keeping stakeholders informed and aligned along the way
- Participate in the team on-call rotation
- Lead efforts to improve systems and processes both within the team and across engineering
- Help drive strategic planning in collaboration with the engineering manager and product manager
- 8+ years experience shipping code in fast paced production environments
- Advanced distributed system instincts and design skills
- Experience driving large cross-functional projects across engineering, product, and operations teams
- A proven commitment to empathy and inclusion
- Excellent communication skills
- Growth mindset and continuous desire to learn and improve is a must
- An interest in fintech and the payments space is preferred
The annual US salary range for this role is $160,000 - $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.
This is a hybrid position. Candidates must be located within a commutable distance to our NYC office in Soho. We do not offer visa sponsorship or assistance.
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- 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
Skills Required
- 8+ years of experience shipping code in fast-paced production environments
- Advanced distributed systems instincts and design skills
- Experience driving large cross-functional projects across engineering, product, and operations teams
- Commitment to empathy and inclusion
- Excellent communication skills
- Growth mindset and continuous desire to learn and improve
- Interest in fintech and the payments space
Lithic Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Lithic and has not been reviewed or approved by Lithic.
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Healthcare Strength — Health coverage includes medical, dental, and vision, with descriptions of comprehensive plans and even unlimited mental‑health therapy coverage. Company materials also note contributions toward premiums.
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Leave & Time Off Breadth — Time‑away policies include flexible/unlimited PTO and a fully paid four‑week sabbatical after five years. Paid holidays and bereavement leave are also cited.
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Parental & Family Support — Family support features 12 weeks of fully paid parental leave for new parents. This policy is prominently listed alongside other core benefits.
Lithic Insights
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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