Senior Software Engineer, Product Platform — Remote API

Lithic; United States; Hybrid; USD 160,000 - 200,000; Full time

Benefits offered by this job

Unlimited PTO

Parental leave 12 weeks

Sabbatical 4 weeks

Work From Anywhere 4 weeks/year

401(k) match

Health, vision, dental insurance

Cashback on card purchases

Voluntary Life Insurance and STD/LTD

Job summary

Lithic, the modern card issuing and processing platform, invites a Senior Software Engineer to join the Product Platform team. You will shape the foundational API layer used by all Lithic products, building reliable, scalable backend services with emphasis on API design and security.

Work is remote with US-based eligibility; collaborate asynchronously with a distributed team across time zones and contribute to key areas like API gateway, events, and key management. Equity is included.

Qualifications

• 4+ years building production backend systems.
• Experience with Rust or willingness to learn Rust; reading code in other languages (Python, Java).
• Interest in using AI tools to boost productivity.
• Ability to navigate ambiguity and drive practical solutions.
• Experience with API design fundamentals and product thinking: versioning, backward compatibility, schema-driven development, customer perspective.

Responsibilities

• Write reliable, secure, and scalable code for Lithic's product platform with minimal tech debt
• Improve the reliability of systems within the team and participate in on-call rotation
• Own projects from planning to launch across areas like API key management, reliability, audit logging, or search
• Lead efforts to improve systems and processes within the team

Skills

Backend development

Rust

API design

AI tooling

Distributed teams

Python/Java

Job description

Senior Software Engineer, Product Platform

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 the Product Platform team, which owns the foundational layer of our API that all other Lithic products build on top. The team’s mission is to make Lithic's API the best in fintech — reliable, consistent, and a joy to integrate with. This includes API Gateway, Events Platform, API key management and authorization, audit logging, or API norms and versioning strategy.

What you'll do:

• Write reliable, secure, and scalable code for Lithic's product platform with minimal tech debt
• Improve the reliability of systems in team’s scope and participate in the team on-call rotation
• Own projects from planning to launch, spanning areas like API key management, reliability, audit logging, or search, keeping stakeholders informed and aligned along the way
• Lead efforts to improve systems and processes within the team

What you'll bring:

• 4+ years building production backend systems, ideally including public-facing APIs at scale
• 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 with API design fundamentals and product thinking: versioning, backward compatibility, schema-driven development, and weighing tradeoffs from the customer's perspective
• 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.

• Catered lunch every Tuesday and Thursday

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As set forth in Lithic’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.

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