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Senior Software Engineer, Data & AI

lightsparkLos Angeles HQData Science
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Salary
$200K – $238K
Job type
Full-time
Experience
Senior · 4+ yrs
Posted
18 Sept 2026
Status
Open · checked 7d ago

About this role

This role suits experienced software engineers with a background in data engineering, machine learning, or backend development who want to build internal AI platforms in Los Angeles. The Senior Software Engineer position at Lightspark involves expanding the internal data and AI platform to power business functions across the company.

Role Overview

Lightspark is hiring a Senior Software Engineer for the Data & AI team based at the Los Angeles headquarters. The position focuses on connecting AI models to company data, tools, and workflows to support departments such as Sales, Finance, Operations, Legal, Compliance, and Partnerships.

Key Responsibilities

Build and own the internal AI platform, encompassing the agent harness, Model Context Protocol servers, tool integrations, context and access services, sandboxed execution, and usage tracking.
Embed with internal teams like Finance and Sales Operations to understand workflows and deliver automated systems.
Extend data infrastructure including DBT models, BigQuery, orchestration, and production pipelines alongside the Staff Data Engineer.
Share ownership of monitoring, alerting, and data reliability for critical systems.
Partner with Engineering to optimize internal developer systems and tooling.

Requirements

Minimum of 4 years of experience in shipping and maintaining production systems within data engineering, machine learning, or backend and full-stack development.
Demonstrated history of building internal platforms or workflow systems adopted by other teams.
Production experience using large language model APIs, agent frameworks, and Model Context Protocol beyond basic prompting.
Strong fundamentals in TypeScript or Node and Python, with willingness to work in both languages.
Fluency with a cloud data warehouse such as BigQuery, Snowflake, or Databricks.
Ability to collaborate with non-technical teams to translate workflow requirements into functional systems.
Comfort with startup ambiguity and based in or willing to relocate to Los Angeles, California.

Nice to Have

Experience in payments, crypto, or blockchain.

Skills and Tools

TypeScript
Node
Python
Large Language Model APIs
Agent Frameworks
Model Context Protocol (MCP)
DBT
BigQuery
Snowflake
Databricks

Salary and Benefits

Salary range between $200,000 and $238,000.
Offers equity.
Offers bonus.

About the Company

Lightspark builds open, instant, and global financial infrastructure designed to make payments accessible, affordable, and instant for businesses and users worldwide.

How to Apply

To apply for this position, please visit the official company careers page.

Skills and tech stack

Questions candidates ask

Where is this job located?

The role is based at the Lightspark headquarters in Los Angeles, California, requiring candidates to be based there or willing to relocate.

What is the salary range for this role?

The salary ranges from $200K to $238K, alongside offered equity and bonus.

How many years of experience are required?

Candidates must have 4 or more years of experience shipping and maintaining production systems.

What technical skills are needed?

The role requires strong fundamentals in TypeScript or Node and Python, production experience with LLM APIs and agent frameworks, and fluency with cloud data warehouses like BigQuery, Snowflake, or Databricks.

Is this a model-training or ML infrastructure role?

No, this is not an ML infrastructure, model-training, or prompt-engineering role.

Ready to apply?

The application is on the official lightspark careers page.

Apply on company site