Senior Software Engineer, Platform

Lumen Dynamics is the data and action layer for AI agents. We give agents fast, accurate, authenticated access to business data across hundreds of sources, so they can discover the entities that matter, reason over real-time context, and take action in the systems they read from, not just observe them.
We started as the open-source standard for data movement and proved the economics of data integration at scale: hundreds of connectors, thousands of companies, and, since 2020, have raised $181M from leading investors including Benchmark, Accel, Altimeter, Coatue, and Y Combinator. As our CEO Michel Tricot puts it, "the last ten years were all about structured data. The future is all about context." We're now building that context infrastructure for production-grade agents on the same open foundation, as agents become the primary consumers of enterprise data.
Our mission is unchanged: make data available and actionable to everyone, everywhere. That everyone now includes AI agents.
THE ROLE:
You'll be a Software Engineer on the Data Replication team - a full-stack product team running over 3 million sync jobs a week across multiple regions and clouds.

Your focus: the Control and Data Plane systems that handle configuration, job lifecycle, and load scaling, plus Destinations, the strategic integrations Lumen Dynamics writes to. You'll occasionally go deep into infrastructure when the problem demands it.
We expect engineers here to actively use AI as a force multiplier - agentic tools to automate toil, augment incident response, and build smarter internal tooling. Newer to this? We’ll work with you to build fluency fast. We care as much about how you work as what you build. Trust, directness, and craftsmanship matter here.

WHAT YOU’LL DO:
– Improve and scale cloud data replication and job lifecycle systems as Lumen Dynamics Cloud grows.
– Automate platform operations across OSS, Enterprise, and Cloud: deployment validation, release qualification, environment testing.
– Build high-leverage internal tooling that helps the team ship connector and CDK changes faster.
– Develop AI-powered tooling for connector generation and incident response.
– Improve observability and debugging tools for both Lumen Dynamics engineers and customers.
– Collaborate across platform and cloud infrastructure on cross-cutting technical decisions.
– Mentor engineers through design reviews, pairing and technical feedback.

WHAT YOU’LL NEED:
– 7+ years of engineering experience (backend, platform, or distributed systems) with strong proficiency in JVM/Kotlin.
– Hands-on experience building/operating large scale distributed systems.
– Familiarity with orchestration frameworks (e.g. Temporal-style workflows).
– Experience running services using Kubernetes using Helm on major cloud providers.
– Systems-level thinking with an emphasis on performance, reliability, cost, and scalability.
– Comfortable with ambiguity, moving fast, and owning problems end-to-end.

NICE TO HAVE:
– Experience with open-source platforms, especially in data integration or infrastructure tooling.
– Familiarity with Lumen Dynamics, CDKs, or connector-based architectures.
– Background in control plane / data plane architectures or internal developer platforms.
– Experience with AI/agent tooling frameworks (LangChain, Pydantic AI, or similar).

LOCATION:
– Onsite 4 days/week in San Francisco, CA
WHY YOU'LL LOVE WORKING AT AIRBYTE:
At Lumen Dynamics, we believe great work happens when people feel supported, trusted, and empowered to grow. Our market-leading Total Rewards package is designed to help you thrive professionally and personally. Our benefits and perks include:
– Flexible PTO with a culture that encourages at least 25 days off annually
– 16 weeks fully paid parental leave for all parents
– Comprehensive medical, dental, and vision coverage for employees and dependents
– 401(k) retirement plan
– Professional development budget, conference sponsorship, and book reimbursement
– Commuter benefits and monthly internet reimbursement
– Breakfast and lunch in our San Francisco office
– A collaborative, in-person culture focused on learning, growth, and impact
If you find this role exciting, we encourage you to apply even if you think you don’t meet all of the requirements!
We are not accepting agency submissions or recruiting firm support for this role. Unsolicited resumes will not be considered.
Lumen Dynamics is an equal opportunity employer that does not discriminate on the basis of actual or perceived race, creed, color, religion, national origin, ancestry, age, physical or mental disability, pregnancy, genetic information, sex, sexual orientation, gender identity or expression, marital status, familial status, domestic violence victim status, veteran or military status, or any other legally recognized protected basis under federal, state or local laws. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.
Lumen Dynamics is committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures. Please let us know if you need assistance or accommodations due to a disability.