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softwareIn-person/Hybrid (Somerville, MA)Full-time

Full Stack Engineer

About Us

At H2Ok Innovations, we're leading the charge in cleantech innovation, reshaping industrial liquid and fluid systems to drive operational efficiency and sustainability. Powered by AI-driven IoT systems and state-of-the-art spectral-based sensors, our solutions optimize facility performance across various processes, including water management, energy reduction, and waste minimization. Based at Greentown Labs, North America's premier cleantech incubator, we're a woman-founded startup backed by renowned investors like Construct Capital, 2048 Ventures, and Flybridge Capital. Our groundbreaking technologies have earned accolades and adoption from industry giants like Unilever, The Coca-Cola Company, and Mitsubishi. We're committed to unlocking untapped data for our customers, empowering them to gain a competitive edge and adopt Industry 4.0.

What You Will Do

As our company scales, we're seeking a Full Stack Engineer to join our dynamic team. This full-time role is tailor-made for someone with over 2 years of experience who is passionate about sustainability and thrives in an ever-evolving environment. Reporting to the Software Manager, you'll leverage a diverse array of technical skills and expertise, encompassing front-end and back-end programming languages, information security protocols, database design, and more. If you're driven by innovation and ready to make a positive impact, we want to hear from you. Here are the responsibilities:

  • Lead full-stack software development, with a focus on back-end technologies.
  • Manage databases, optimize queries, and implement efficient storage solutions.
  • Integrate data analysis and machine learning models for robust data processing.
  • Translate customer challenges and feedback into user-centric web solutions.
  • Develop APIs for seamless integration of our data solutions into customer workflows.
  • Ensure the security of customer data across all stages, from access to transmission.
  • Establish and enforce standards and security practices to meet regulatory requirements.
  • Foster a collaborative team environment, emphasizing mentorship and knowledge sharing.
  • Implement robust processes and workflows for software development, deployment, testing, and scaling.
  • Participate in or lead design reviews and system builds, with a focus on visualization and scalability.
  • Contribute to comprehensive documentation of workflows, codebases, and deployment procedures.

About You

  • Thrive in a fast-paced, iterative team environment.
  • Possess a startup founder mindset with a drive to effect positive change.
  • Proficiency in front-end technologies such as JavaScript/TypeScript, HTML, CSS, React.js, and CSS Frameworks like Tailwind CSS.
  • Experience with full-stack web development, preferably in Next.js, or proficiency in server-side programming languages like Python, Java, Ruby, or PHP.
  • High proficiency in SQL and caching mechanisms like Redis, with expertise in optimizing queries and handling large volumes of time-series data.
  • Hands-on experience in building scalable cloud architecture and security solutions, preferably in AWS and Azure.
  • Ability to create comprehensive test suites covering both front-end and back-end components.
  • Detail-oriented with a commitment to meticulous documentation.
  • Knowledge of ML frameworks, data visualization, and analysis tools preferred.


  • Direct impact on product and culture
  • Comprehensive benefits package including Medical, Dental, Vision, Life Insurance, Disability, Transportation benefit, Health and Wellness benefit, and more
  • Competitive salary and bonus opportunities
  • Dynamic and inclusive work environment
  • Opportunities for growth and professional development
  • Access to Greentown Labs' extensive network of cleantech startups

Working at H2Ok

We recognize that even exceptional candidates may experience imposter syndrome. If you possess some, but not all, of the qualifications, we encourage you to apply. We're building a diverse team that values hard work, family, and personal well-being. At H2Ok, we celebrate inclusivity and diversity, striving to build a community that transforms manufacturing. Join us in our mission to make a difference.

Learn How We Think

Apply Now

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