Senior Software Engineer

EnergyHub; France; On-site; EUR 90,000 - 130,000; Full time

Benefits offered by this job

100% paid medical for employees

a 401(k) with employer match

a casual environment

the flexibility to set your own slate

free Citi Bike membership

gym subsidy

paid parental leave

an education assistance program

Job summary

EnergyHub is seeking a Senior Software Engineer to join the Devices Team, focusing on IoT devices and energy platform scalability. You will help migrate from monolith to microservices, design APIs, and mentor other engineers.

You will work across frontend and backend, with React, Java, and data modeling, while leveraging AI tooling to accelerate delivery. A climate-positive impact awaits in a fast-paced, collaborative environment.

Qualifications

• 7+ years of professional software engineering experience.
• Full-stack experience across frontend, backend, and DB modeling.
• Proficiency in React and Java (11+).
• Experience with web services, gRPC/RESTful APIs, and contract-driven development.
• Ability to guide team toward scalable solutions.
• Strong problem-solving and cross-functional collaboration.
• Experience building dynamic UIs with React and TypeScript.
• Experience leveraging AI tools in development and testing.

Responsibilities

• Design and implement core platform features for multiple use cases.
• Drive monolith to microservices transition for scalability.
• Lead technical initiatives, data modeling, contract definition, and API development.
• Develop front and back end solutions with high-quality, tested code.
• Collaborate with product managers and internal teams on high-impact projects.
• Develop creative solutions within real-world constraints to keep platform flexible.
• Contribute to CI/CD, data modeling, and iterative development (PoCs, milestones).
• Mentor engineers and foster a collaborative technical culture.

Skills

Full-stack development

React

Java 11+

gRPC/REST APIs

API design

Data modeling

Cross-functional collaboration

AI tooling in development

Tools

PostgreSQL

SNS/SQS

MongoDB

AWS

Datadog

Robot Framework

Job description

The Devices Team is responsible for the creation and lifecycle management of IoT devices enrolled in EnergyHub programs used to balance the power grid. The team plays a critical rolein ensuring the scalability and flexibility of our future by creating a core platform that enablesother internal teams to build new features and functionality quickly.

This is an opportunity to join a highly energized team of engineers eager to define and developkey concepts, solve complex challenges with real-world constraints and have a positive impacton our climate future. We are continuing our journey to migrate from a monolithic to amicroservices architecture and deliver well defined APIs to the broader organization. Theprimary focus is to integrate any Distributed Energy Resource (DER) into our platform in a waythat enables multiple use cases without compromising quality and scalability.

As a senior engineer, you support our mission by helping drive major initiatives, providingexpertise and guidance from past industry experience, and autonomously developinghigh-quality solutions that balance multiple constraints while ensuring long-term flexibility.

Main Responsibilities: What you'll do

• Design and implement core platform features that solve for multiple constraints and use cases.
• Help drive the transition from a monolithic architecture to a microservices-based approach, ensuring scalability, maintainability, and improved system resilience.
• Lead technical initiatives and provide data modeling, contract definition, and API development.
• Develop front and back end solutions, ensuring well-structured, high-quality code with automated testing.
• Collaborate cross-functionally with product managers, internal engineering teams, and stakeholders to drive high-impact projects.
• Work within real-world constraints to develop creative solutions that maintain platform flexibility and scalability.
• Contribute to best practices for CI/CD, data modeling, and iterative development (e.g.,PoCs, rapid prototyping, milestone-based execution).
• Mentor and support other engineers, fostering a strong technical culture of respect, open communication, and collaboration.

Required Skills and Experience: What you need

• 7+ years of professional software engineering experience.
• Strong full-stack development experience, including frontend, backend, and relational database modeling and development.
• Proficiency in React and Java (preferably Java 11+).
• Experience with web services, gRPC/RESTful APIs, and contract-driven development.
• Ability to operate independently, help provide technical vision and guide the team toward scalable solutions.
• Strong problem-solving skills, capable of balancing multiple use cases while enabling flexibility.
• Proven expertise in building dynamic, responsive user interfaces using React and TypeScript.
• Demonstrated proficiency in leveraging AI tools in development and testing to accelerate delivery and enhance code quality.
• Strong communication skills, with an emphasis on cross-functional collaboration and working on challenging technical problems.

Preferred Skills and Experience: Nice-to-haves

• Experience with PostgreSQL, Asynchronous messaging (SNS/SQS, RabbitMQ), MongoDB, AWS, Datadog, and Robot Framework.
• Familiarity with CI/CD pipelines and modern software development practices.
• Proven ability to deliver high-quality, iterative value while maintaining execution speed.
• Experience or familiarity with energy industry

Please note that sponsorship of new applicants for employment authorization, or any other immigration-related support, is not available for this position at this time.

Why work for EnergyHub?

• Collaborate with outstanding people: Our employees work hard, do great work, and enjoy collaborating and learning from each other.
• Make an immediate impact: New employees can expect to be given real responsibility for bringing new technologies to the marketplace. You are empowered to perform as soon as you join the team!
• Gain well rounded experience: EnergyHub offers a diverse and dynamic environment where you will get the chance to work directly with executives and develop expertise across multiple areas of the business.
• Work with the latest technologies: You'll gain exposure to a broad spectrum of IoT, SaaS and machine learning obstacles, including distributed fault-tolerance, device control optimization, and process modeling to support scalable interaction with disparate downstream APIs.
• Be part of something important: Help create the future of how energy is produced and consumed. Make a positive impact on our climate.

About EnergyHub

EnergyHub empowers utilities and their customers to create a clean, distributed energy future. We help consumers turn their smart thermostats, EVs, batteries, and other products into virtual power plants that keep the grid stable and enable higher penetration of solar and wind power.

To learn more, visit energyhub.com.

Company Benefits

• 100% paid medical for employees
• a 401(k) with employer match
• a casual environment
• the flexibility to set your own schedule
• a fully stocked fridge and pantry
• free Citi Bike membership
• secure bike rack
• gym subsidy
• paid parental leave
• an education assistance program

EnergyHub is an Equal Opportunity Employer

EOE, Including Disability/Vets.

Reasonable accommodations are available for individuals with disabilities throughout the application process. If you are a person with a disability needing assistance with the application process, please contact [e-mail].

Notice To Third Party Agencies:

EnergyHub understands the value of professional recruiting services. However, we are not accepting resumes from recruiters or employment agencies for this position. In the event we receive a resume or candidate referral for this position from a third-party recruiter or agency without a previously signed agreement, we reserve the right to pursue and hire those candidate(s) without any financial obligation to you.