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Lightspark · 2 hours ago

Senior Staff Engineer, Spark

Culver City, CA

Full-time

Onsite

Senior Level, Lead/Staff

$255K/yr - $300K/yr

12+ years exp

Lightspark is building open payments for the Internet with Bitcoin-powered solutions. The Senior Staff Engineer will define architecture, design, and scale a next-generation open payments network while collaborating with cross-functional teams and mentoring engineers.

CryptocurrencyMobile PaymentsPayments

H1B Sponsor Likely

Responsibilities

Design, build, and scale the distributed backend services that power Spark

Own system architecture for highly available, low-latency services processing real-time Bitcoin transactions globally

Work across multiple domains and layers of the stack, from core protocol logic to service orchestration to data infrastructure

Build internal frameworks and tooling for monitoring, performance optimization, and operational reliability

Extend and enhance protocol capabilities to support new markets, assets, and payment flows

Collaborate with engineers, product, TPMs, and cross-functional partners to drive long-term technical direction

Mentor and guide senior engineers, raising the bar for technical excellence across the team

Adapt quickly to new challenges, whether designing new systems, debugging complex distributed behaviors, or scaling production infrastructure under load

Qualification

Distributed systemsBackend infrastructureProtocol-level developmentTechnical leadershipGoPythonRustC++KotlinDockerKubernetesAWSData-driven problem solvingMentoringCollaborationAdaptability

Required

12+ years of engineering experience, including significant time in distributed systems, backend infrastructure, or protocol-level development

Proven ability to design and scale large, complex systems with high reliability and low latency

Strong track record of technical leadership driving architecture decisions, influencing roadmaps, and delivering mission-critical systems

Comfortable operating across different languages, frameworks, and problem domains; primary stack includes Go, with additional work in Python, Rust, C++, and Kotlin

Experience with modern deployment and infrastructure tooling (Docker, Kubernetes, AWS, etc.)

Data-driven approach to problem solving, with experience building metrics-driven feedback loops

Ability to thrive in high-intensity, high-ownership environments

Preferred

CS degree, or equivalent is ideal but not required

Company

Lightspark

Builds payments infrastructure for digital banks, wallets and exchanges, real-time global money movement for Bitcoin, fiat, and stablecoins.

Founded in 2022

Los Angeles, California, USA

51-200 employees

https://www.lightspark.com/

H1B Sponsorship

Lightspark has a track record of offering H1B sponsorships. Please note that this does not guarantee sponsorship for this specific role. Below presents additional info for your reference. (Data Powered by US Department of Labor)

Distribution of Different Job Fields Receiving Sponsorship

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Trends of Total Sponsorships

2025 (2)

2023 (1)