Lightspark

Product Manager

• Drive the end-to-end product lifecycle for our global network rollout solutions, from ideation to launch, ensuring alignment with business objectives and customer needs.
• Develop and document payment system architectures, including integration with third-party payment gateways, fraud prevention systems, and compliance mechanisms.
• Conduct market research to identify trends, customer needs, and competitive landscape to inform product development.
• Stay current with emerging technologies and trends in payment systems and incorporate relevant advancements into solution designs: on & off ramps, settlement, customer onboarding, ledger capabilities.
• Be responsible for designing robust, scalable, and secure payment solutions.
• Be the product owner during the product development lifecycle, ensuring timely delivery of features and enhancements that optimize the product efficiency.
• Understand and incorporate regulatory and compliance requirements into the product development process, with a focus on AML, licensing, and payment industry standards.
• Collaborate with the design team to create intuitive and user-friendly payment experiences.
• Define and track key performance indicators (KPIs) to measure the success of payment products and inform future development.

Staff Product Manager

Production Engineer

• Setting the technical direction for Lightspark’s production infrastructure and influencing engineering strategy across multiple teams.
• Architecting and scaling secure, highly available distributed systems that support global, 24/7 financial transactions.
• Designing next-generation infrastructure platforms and frameworks (observability, deployment, security, compute, networking) that other engineers build on.
• Leading cross-functional, company-wide initiatives to improve reliability, performance, and operational excellence.
• Anticipating future scale, regulatory, and security needs—and driving long-term solutions before they become bottlenecks.
• Mentoring other engineers, elevating technical judgment, and contributing to a culture of craftsmanship and accountability.
• Owning and improving high-severity production operations, incident response, and postmortems.

Senior Staff Production Engineer

Financial Planning and Analysis

• Monitor and manage fiat, bitcoin, and other digital asset liquidity across global entities, banks, and custodians for all Lightspark entities.
• Execute timely internal transfers, fiat wires, bitcoin transactions, and exchange conversions to meet obligations.
• Develop frameworks for safeguarding funds, intercompany settlements, and liquidity stress testing.
• Support capital allocation, working capital forecasting, and treasury strategy.
• Support new product launches with treasury operational design for both fiat and bitcoin flows.
• Leverage AI/ML and automation tools to streamline reconciliations, detect anomalies in cash/crypto flows, and enhance liquidity forecasting accuracy.
• Implement scalable processes and controls for reconciliations, settlements, and cash reporting.
• Analyze large data sets using BI and AI-driven tools to reduce complexity, surface insights, and make actionable recommendations for management.
• Ensure compliance with liquidity requirements across Lightspark’s regulated entities.
• Partner with Compliance, Accounting, and Operations teams to support license renewals, and ongoing reporting obligations for financial KPIs (e.g. permissible investments reporting).
• Maintain documentation and evidence for regulators, auditors, and banking/custody partners.
• Explore the use of AI-enabled reporting and monitoring tools to improve compliance efficiency and ensure timely, accurate filings across multiple jurisdictions.
• Collaborate with Product and Engineering to align treasury infrastructure with payments and settlement flows.
• Provide treasury and regulatory insights for strategic planning and Senior Management reporting.
• Build scalable playbooks and automation for settlements, reconciliations, and reporting, including evaluating how AI agents and data pipelines can evolve these processes over time.
• Support management in completing special projects, ad-hoc questions and initiatives.

Treasury and Regulatory Finance Manager

Full-stack Engineer

• Assisting with building production services, websites, and applications and learning how we generate SDKs across various platforms and languages
• Learning and coding in Python, Typescript, React, with exposure to other languages like Go, Rust, and Kotlin
• Collaborating with Senior Engineers, Product Management, and Product Design to understand how world-class software is built
• Contributing to services that help bring Bitcoin, stablecoin, and open payments technology to mass adoption
• Growing your skills in a highly collaborative environment
• Gaining experience across different projects from core infrastructure to new features
• Connecting with Lightspark team members over provided daily lunches, and building relationships and learnings from experienced engineers

Software Engineer Intern

Security Engineer

• Shape and drive security strategy across application, infrastructure, and crypto domains
• Design and implement secure-by-default frameworks, tools, libraries, and systems
• Perform deep technical reviews and audits with emphasis on blockchain/crypto components
• Audit designs and codebases to identify vulnerabilities and guide secure development
• Mentor and provide technical leadership on secure development practices, encryption, authentication, and access control
• Partner with operations to strengthen monitoring, incident investigation, detection, and response
• Lead security training and awareness programs focused on blockchain and secure coding
• Track emerging threats and recommend continuous improvement strategies

Staff Security Engineer

Infrastructure Engineer

• Designing, building, and scaling production services in Python, Go, and Rust
• Debugging production issues and supporting customers in their integration of the company's services
• Creating long term strategies and tooling to improve the stability, debuggability, monitoring, and support for company’s services and customers
• Implementing new features of the Lightning Protocol to keep the company’s services at the cutting edge of the Lightning Network
• Learning and sharing knowledge around the Lightning Network, Bitcoin Network, and other blockchains to contribute to the company’s highly collaborative environment
• Collaborating with the Lightning network and Bitcoin communities to make core protocol improvements
• Leading and mentoring a local team of Lightning Engineers and acting as a technical leader to ensure platform integrity and promote good practices
• Building frameworks to collect and deeply analyze Lightning data for solution improvement

Lead Lightning Network Infrastructure Engineer

• Design, build, and maintain SDKs used by partners to integrate with Spark’s backend services
• Work across multiple languages and platforms, primarily JavaScript/TypeScript, and expand to Kotlin, Go, and others
• Build core functionality and developer tools for high-volume enterprise customers
• Collaborate with engineers, product managers, and partner teams to deliver reliable, high-quality software
• Ensure SDKs are well-tested, well-documented, and easy for developers to adopt
• Contribute to architecture and design of new features with scalability and performance in mind
• Adapt quickly to new technologies, languages, and requirements as the product evolves
• Maintain a high bar for engineering excellence in a fast-paced, collaborative environment