Lunar Energy Logo

Lunar Energy

Staff Firmware Engineer

Posted 2 Months Ago
Be an Early Applicant
Remote
Hiring Remotely in UK
Senior level
Remote
Hiring Remotely in UK
Senior level
Develop and maintain firmware for high-volume home energy products across the full product lifecycle. Responsibilities include designing wireless communication solutions, implementing RF protocols, mobile interfaces, diagnostics and updates, shaping system architecture, conducting code reviews, and collaborating cross-functionally to deliver reliable products. The role requires hands-on embedded development using C and Python, IP networking protocols, Bluetooth/BLE, WiFi, Espressif hardware, and laboratory test equipment.
The summary above was generated by AI

Staff Firmware Engineer

Embedded/Firmware Engineers at Lunar will be responsible for the full product development lifecycle of our products’ firmware and software, which are important sources of functionality, adaptability, and optimization of our designs. We are looking for people who are passionate about a more sustainable future, and want to make that vision a reality.  An ideal candidate is excited and ready to collaborate closely with a dedicated, cross-functional team to deliver innovative, best-in-class products. Engineers at Lunar are  hands-on and involved in all aspects of the product, and own the design from forming concepts based on first principles to managing high-volume production quality.

Lunar Energy was founded to transition homes to 100% clean energy—making our electricity greener, our air cleaner and our energy more safe, secure and reliable for all. We’re a fast-growing, global company building the world’s best clean energy products to electrify all homes and connect communities to form clean, resilient virtual power plants.

On a given day at Lunar, you’ll likely…

  • Develop wireless network communication solutions for high-volume products, ensuring continuous 24/7 reliability
  • Design firmware software that runs in our home energy product components: RF communication protocols, mobile app interfaces, system diagnostics and updates.
  • Drive design discussions on system architecture to achieve the desired product functionality. 
  • Collaborate with the team on design and development, including participating in code reviews. 
  • Work collaboratively with other disciplines across the company to continuously refine and improve our understanding of how our products can create the greatest impact, get to market quickly, and operate reliably for our customers

Desired Skills:

  • Degree in a computer-engineering related or adjacent field, or demonstrated commensurate ability.
  • 5+ years experience delivering firmware for new products as part of a team.
  • Proficiency in C, and working familiarity with Python. Rust knowledge is nice to have.
  • Experience working with IP stack protocols: Ethernet, WiFi, TCP, UDP, HTTPS, etc
  • Working knowledge of Bluetooth/BLE.
  • Experience working with WiFi networks and Espressif ecosystem
  • Working knowledge of Oscilloscopes, Logic Analyzers and other lab test equipment

Benefits:

We’re dedicated to creating a remarkable employee experience. At Lunar, competitive base pay is one part of our total compensation package. Lunar employees also have the opportunity to become Lunar shareholders by getting equity in a fast-growing company and participating in our employee stock program.

Additional benefits include: 

  • Competitive salary and stock options package
  • Private Medical Insurance scheme through BUPA (medical history disregarded)
  • A wellbeing and lifestyle benefits plan through Medicash
  • 5% employer contributions pension matching
  • A budget for work related training of £1,000 per financial year and an allowance of 4 training days
  • Cycle To Work scheme and Workplace Nursery benefit
  • Access to Spill - Mental Health Support platform
  • Enhanced Maternity + Paternity Pay
  • 25 days annual holiday entitlement + 8 Bank Holidays
  • Flexible start and finish times, fully remote working or hybrid depending on preferences

Our DE&I Philosophy: Lunar Energy is an equal opportunity employer. We are committed to attracting, developing and retaining diverse talent by supporting an inclusive workplace. Lunar recruits, hires, trains, promotes, compensates, and administers all personnel actions without regard to race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, disability status or any other status protected by applicable law.


Similar Jobs

A Minute Ago
Remote or Hybrid
Expert/Leader
Expert/Leader
Artificial Intelligence • Cloud • HR Tech • Information Technology • Productivity • Software • Automation
Build and deploy production-grade, LLM-enabled applications for strategic enterprise customers. Own backend services, frontend integrations, data orchestration, vector databases, and AI pipelines while working onsite with customer teams. Develop reusable libraries, prompts, SDKs, scaffolds, and documentation; integrate legacy systems; debug distributed systems; optimize performance and observability; and influence the AI platform roadmap. Requires extensive software engineering experience, strong AI/ML tooling knowledge, cloud and DevOps fluency, and travel up to 30%.
Top Skills: AirflowAmazon SagemakerAngularSparkAWSAzureAzure Machine LearningCi/CdContainersGoogle Cloud PlatformGraphQLInfrastructure As CodeJavaKubeflowLangchainLimeLoraMlflowNode.jsPandasPeftPrefectPythonReactRestSemantic KernelShapSQLTorchserveTritonVector DatabasesVertex AiVllmWeights & Biases
2 Hours Ago
Remote
United Kingdom
Mid level
Mid level
Information Technology • Productivity • Professional Services • Software • Business Intelligence
Supports revenue operations by enabling sales teams and partners, reviewing quotes, coordinating contract reviews, validating orders, and resolving sales-process issues. Ensures orders contain the information needed for invoicing and booking, supports partner incentive programs, and improves workflows through documentation, automation, and AI-assisted tools. The role also provides training, ticket-based support, sales order entry, and cross-functional coordination with Sales, Legal, Finance, and other stakeholders.
Top Skills: Ai-Assisted WorkflowsCpqExcelSalesforceZuora
6 Hours Ago
Remote or Hybrid
Senior level
Senior level
Fintech • Mobile • Payments • Software • Financial Services
Design, build, test, and operate scalable Java and Spring Boot backend services for Wise’s cash management and payments products. The role involves distributed systems, microservices, Kafka-based event-driven architecture, PostgreSQL optimization, partner integrations, production reliability, code reviews, mentoring, and cross-functional collaboration. Engineers own solutions from customer problem through production while making thoughtful tradeoffs around delivery, reliability, and maintainability.
Top Skills: Domain-Driven DesignEvent-Driven ArchitectureJavaKafkaMicroservicesPostgresRelational DatabasesSpring Boot

What you need to know about the Belfast Tech Scene

If asked to name the birthplace of the RMS Titanic, you might not say Belfast. Similarly, if asked to name Europe's leading destination for foreign direct investment in new software development, Belfast might not come to mind. Yet, both are true. The city has emerged as a tech powerhouse, recently ranked among the best in the U.K. for tech careers — especially for software developers. It also leads the U.K. with the highest percentage of software development jobs advertised.

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account