Junior & Mid Level Full Stack Engineers | Green Tech / Energy Tech Start-Up | React.js Node.js TypeScript | LDN 2 Days Per Week | £50K - £80K + Healthy Equity
Junior & Mid Level Full Stack Engineers | Green Tech / Energy Tech Start-Up | React.js Node.js TypeScript | LDN 2 Days Per Week | £50K - £80K + Healthy Equity

Junior & Mid Level Full Stack Engineers | Green Tech / Energy Tech Start-Up | React.js Node.js TypeScript | LDN 2 Days Per Week | £50K - £80K + Healthy Equity

City of London Full-Time 40000 - 64000 £ / year (est.) Home office (partial)
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At a Glance

  • Tasks: Join a talented team to build innovative tools for the energy transition.
  • Company: A green tech start-up focused on sustainable solutions and real-world impact.
  • Benefits: Enjoy £50K - £80K salary, 33 days holiday, and hybrid working options.
  • Why this job: Make a difference in climate change while working with cutting-edge technology.
  • Qualifications: 2-4 years experience in full stack development with a STEM background.
  • Other info: Collaborate closely with a mission-driven team in a dynamic environment.

The predicted salary is between 40000 - 64000 £ per year.

Company: I'm looking for junior and mid level full stack engineers who are excited about elegant systems as they are about real-world impact. You’ll join a lean, talented team of engineers and work directly on tools that accelerate the energy transition — like:

  • Automated design tools for heat pump systems
  • A survey app for collecting property data on-site
  • D/3D floorplan creators (maybe even with LiDAR and CV!)
  • Country-wide data tools through large-scale scraping + mapping
  • Hardware integrations (e.g. bluetooth laser measures, sensors)
  • Offline-first/PWA apps for installers on the move

Tech Stack:

  • React, TypeScript, Konva, Tailwind
  • Node.js, PostGREST, Prisma
  • PostgreSQL / PostGIS, Docker, Atlas
  • (Sunsetting Python + FastAPI)

Requirements for Junior & Mid Full Stack Engineers:

  • 2 - 4 years commercial experience
  • STEM Background
  • React + TypeScript (you’re confident building fast, dynamic UIs)
  • SQL and relational database design
  • RESTful APIs and distributed systems
  • Scalable and secure architectures
  • Owning features end-to-end, from shaping the product idea to shipping the code.

Type of engineer for Mid & Senior Full Stack Engineers:

  • You’re product-minded — you care about the user and the why behind every line of code.
  • You’re impact-driven — you want to move fast and make a real dent in the climate crisis.
  • You’re collaborative — you're excited to work closely with a tight-knit, in-person team.
  • You’re into sustainable tech, heat pumps, or building a greener future.

Remuneration & Benefits:

  • £50,000 - £80,000 + meaningful equity
  • 33 days holiday + work abroad up to 30 days/year
  • Hybrid working between London & Bristol studios
  • Work closely with a brilliant, mission-led team

If you want to hear more about the position please apply ASAP with a CV and we will give you a call if we think you are a match!

Junior & Mid Level Full Stack Engineers | Green Tech / Energy Tech Start-Up | React.js Node.js TypeScript | LDN 2 Days Per Week | £50K - £80K + Healthy Equity employer: Owen Thomas | Pending B CorpTM

Join a dynamic green tech start-up that prioritises both innovation and sustainability, offering Junior and Mid Level Full Stack Engineers the chance to work on impactful projects that drive the energy transition. With a collaborative work culture, generous benefits including 33 days of holiday and the flexibility of hybrid working between London and Bristol, this is an excellent opportunity for those looking to grow in their careers while making a meaningful difference in the world.
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Contact Detail:

Owen Thomas | Pending B CorpTM Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Junior & Mid Level Full Stack Engineers | Green Tech / Energy Tech Start-Up | React.js Node.js TypeScript | LDN 2 Days Per Week | £50K - £80K + Healthy Equity

Tip Number 1

Familiarise yourself with the specific technologies mentioned in the job description, such as React.js and Node.js. Consider building a small project or contributing to open-source projects that utilise these technologies to showcase your skills.

Tip Number 2

Research the company’s mission and values, especially their focus on green tech and energy transition. Be prepared to discuss how your personal values align with theirs during any interviews or conversations.

Tip Number 3

Network with current or former employees of the company through platforms like LinkedIn. Engaging with them can provide insights into the company culture and potentially give you a referral.

Tip Number 4

Prepare to demonstrate your problem-solving skills and product mindset. Think of examples from your past experience where you’ve owned features end-to-end and how you’ve made an impact through your work.

We think you need these skills to ace Junior & Mid Level Full Stack Engineers | Green Tech / Energy Tech Start-Up | React.js Node.js TypeScript | LDN 2 Days Per Week | £50K - £80K + Healthy Equity

Proficiency in React.js
Strong knowledge of TypeScript
Experience with Node.js
Understanding of SQL and relational database design
Familiarity with RESTful APIs
Experience in building scalable and secure architectures
Ability to own features end-to-end
Strong problem-solving skills
Collaboration and teamwork abilities
Passion for sustainable technology
Experience with Docker
Knowledge of PostGREST and Prisma
Familiarity with PostgreSQL/PostGIS
Understanding of automated design tools and hardware integrations

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience with React, TypeScript, and any projects related to green tech or energy tech. Emphasise your problem-solving skills and any impact-driven projects you've worked on.

Craft a Compelling Cover Letter: Write a cover letter that showcases your passion for sustainable technology and the energy transition. Mention specific projects or experiences that align with the company's mission and values.

Showcase Technical Skills: In your application, clearly outline your technical skills, especially in building scalable architectures and working with RESTful APIs. Provide examples of how you've owned features from concept to deployment.

Express Your Collaborative Spirit: Highlight your ability to work in a team environment. Share experiences where you collaborated closely with others to achieve a common goal, particularly in fast-paced settings.

How to prepare for a job interview at Owen Thomas | Pending B CorpTM

Show Your Passion for Green Tech

Make sure to express your enthusiasm for sustainable technology and the impact it can have on the environment. Share any personal projects or experiences that demonstrate your commitment to green initiatives.

Demonstrate Technical Proficiency

Be prepared to discuss your experience with React.js, Node.js, and TypeScript in detail. Bring examples of past projects where you’ve built dynamic UIs or worked with RESTful APIs, as this will showcase your technical skills effectively.

Highlight Collaboration Skills

Since the company values teamwork, be ready to share examples of how you've successfully collaborated with others in previous roles. Discuss how you approach problem-solving in a team setting and your ability to communicate effectively.

Prepare Questions About the Company’s Mission

Research the company’s projects and goals related to energy transition. Prepare thoughtful questions that show you’re genuinely interested in their mission and how you can contribute to their objectives.

Junior & Mid Level Full Stack Engineers | Green Tech / Energy Tech Start-Up | React.js Node.js TypeScript | LDN 2 Days Per Week | £50K - £80K + Healthy Equity
Owen Thomas | Pending B CorpTM
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  • Junior & Mid Level Full Stack Engineers | Green Tech / Energy Tech Start-Up | React.js Node.js TypeScript | LDN 2 Days Per Week | £50K - £80K + Healthy Equity

    City of London
    Full-Time
    40000 - 64000 £ / year (est.)

    Application deadline: 2027-07-10

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    Owen Thomas | Pending B CorpTM

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