L Senior Software Engineer, Authorization Lithic · Remote posted 9 months ago

Rustify; Northern (KY); Hybrid; USD 140,000 - 190,000; Full time

Job summary

Lithic’s Authorization team seeks a Senior Software Engineer to help design and build card authorization and fraud tooling. You will split time between coding and technical leadership, influencing architectural decisions and system reliability across a distributed, multi-region stack.

Ideal candidates bring 4+ years shipping production-grade software, with passion for Rust, scalable distributed systems, and strong communication. This role is remote and collaborative across the US and Europe.

Qualifications

• 4+ years shipping code and leading projects in production environments.
• Experience in or desire to learn Rust.
• Strong distributed systems instincts and design skills.
• Ability to navigate ambiguity and align diverse perspectives.
• Interest and experience in leveraging AI tools to enhance productivity.
• Excellent communication skills.

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.

Skills

Distributed systems

Rust experience

Leadership

Communication skills

AI tools

Job description

# Senior Software Engineer, AuthorizationLithic · Remote · Senior · RemoteView & ApplyLithic 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 rotationQualifications:* 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