Radiant · 2 weeks ago
Senior Software Engineer - Data Platform
El Segundo, CA
Full-time
Onsite
Senior Level
5+ years expRadiant is an El Segundo, CA-based startup building the world’s first mass-produced, portable nuclear microreactors. The company is seeking a driven Senior Software Engineer to architect and build data pipelines for analysis and simulation, enabling teams to interrogate simulation results and analyze hardware design iterations.
Clean EnergyEnergyEnergy EfficiencyRenewable Energy
No H1B
Responsibilities
Architect data platforms and pipelines for design analysis using modern data engineering tools for scalable data processing
Design and maintain batch and streaming ETL pipelines using Spark, Kafka, Flink, Airflow, or similar frameworks
Implement data modeling and optimization strategies for analytical workloads across data lakes, warehouses, and real-time databases
Own data products end-to-end from requirements gathering through delivery and monitoring
Build data quality frameworks and monitoring systems to ensure reliability and observability
Develop pipelines for data transformation, aggregation, and feature engineering to support simulation and hardware design
Collaborate with simulation and mechanical engineering teams to understand workflows and data needs
Design APIs and data access layers for self-service analytics and programmatic access
Qualification
Required
Bachelor's degree in computer science or engineering
Expert proficiency in Python, Rust, R, C#, or C/C++
5+ years of software engineering experience in data platform engineering, pipeline development, or distributed data systems
Experience building data pipelines for hardware analysis, AI/ML workflows, or distributed processing
Experience with modern data platforms (Databricks, Snowflake, BigQuery, Redshift)
Deep expertise with orchestration systems (Kubernetes, Argo Workflows, Airflow)
Experience with streaming technologies (Kafka, Kinesis, Pulsar)
Familiarity with Git, Docker, and CI/CD frameworks
Must be willing to work extended hours and weekends as necessary to accomplish our mission
Must work 100% onsite at El Segundo HQ
Preferred
7+ years of software engineering experience in data platform engineering or distributed systems
Experience with hardware simulation or computational modeling
Experience in testing software and hardware systems
Experience with distributed software development and design patterns
Experience with data lake architectures, columnar formats (Parquet, ORC, Arrow), and table formats (Delta Lake, Iceberg, Hudi)
Familiarity with data visualization tools (Grafana, Plotly, Observable, Streamlit)
Experience with data governance and metadata management tools (DataHub, Amundsen)
Knowledge of distributed SQL systems (Presto, Trino, Spark)
Benefits
Substantial incentive stock plan for all full-time employees.
100% premium coverage for base Silver level plan for employee + 50% premium coverage for dependents. Platinum plans available.
Sponsored memberships for eligible employees and their dependents.
100% premium coverage for top tier plan + 50% for dependents.
100% premium coverage for top tier plan (including orthodontia) + 50% for dependents.
Voluntary life, accident, hospital, critical illness, commuter and FSA/HSA are offered as employee contributed benefits.
8-weeks of paid parental leave for all parents. Additional paid pregnancy leave for CA employees.
Daily catered lunch. Free snacks and drinks.
Flexible PTO policy. Remote workday allocation.
Company and team-bonding events, happy hours and in-person camaraderie.
Beautiful El Segundo headquarters close to the Pacific Ocean.
Company
Radiant
Radiant develops portable nuclear microreactors designed to generate electricity and heat in a compact, factory-built form.
51-200 employees
Funding
Current Stage
Late StageTotal Funding
$518.82MKey Investors
Andreessen HorowitzUnion Square Ventures
2025-12-17Series D· $300M
2024-11-14Series C· $165M
2023-04-18Series B· $40M
Leadership Team
Doug Bernauer
Chief Executive Officer
Recent News
2026-01-07
The Motley Fool
2026-01-04
Globe and Mail
2026-01-03
Company data provided by crunchbase