Senior Backend Engineer

Senior Backend Engineer

London Full-Time 48000 - 84000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Build high-performance financial infrastructure and integrate with payment providers.
  • Company: Join a mission-driven startup focused on climate finance for underserved communities.
  • Benefits: Enjoy top compensation, equity ownership, and work with industry leaders.
  • Why this job: Tackle meaningful problems in a collaborative, fast-paced environment with high autonomy.
  • Qualifications: STEM degree, 3+ years backend experience, strong JVM and Postgres skills required.
  • Other info: No relocation or visa support available; startup or FinTech experience preferred.

The predicted salary is between 48000 - 84000 £ per year.

Do you want to tackle one of the biggest problems of our time while expanding financial access for communities on the frontlines of climate change? We’re working with a Fintech / Climate mission-driven startup that’s building the financial infrastructure to channel climate finance directly to underserved regions globally. They are assembling a world-class engineering team to solve significant problems, with high autonomy and high ownership.

What You’ll Be Doing:

  • Build a high-performance core banking/financial infrastructure.
  • Integrate with payment and verification providers (MRV tools).
  • Design scalable systems with rapid iteration in mind.
  • Work closely with customers and the field—this is not a desk-only job.
  • Help establish a culture grounded in pragmatism, scientific thinking, and collaboration.

About You:

  • STEM degree from a top university.
  • 3+ years of backend development experience.
  • Strong with JVM-based languages.
  • Deep Postgres knowledge (e.g. partitioning, replication, GIST indexes).
  • Familiar with AWS/cloud infrastructure.
  • Startup or FinTech experience strongly preferred.

Nice-to-Have:

  • Experience in the climate/carbon ecosystem.
  • Experience building ledgers, balances, or payment systems.

You’ll Fit if You:

  • Want to work on meaningful, unsolved, ambitious problems.
  • Thrive with autonomy and direct customer interaction.
  • Fast-moving, collaborative teams energise you.
  • Don’t mind getting your hands dirty—sometimes literally.

Perks:

  • Top quartile compensation.
  • High equity ownership.
  • Work alongside talent from Revolut, Stripe, Google, Uber, Monzo, and more.
  • Backed by leading climate and fintech investors.

At this time, we are unable to proceed with any candidate that needs relocation or visa support.

Senior Backend Engineer employer: Heart Mind Talent

Join a mission-driven startup at the forefront of Climate FinTech, where you'll have the opportunity to make a tangible impact on global financial access while working in a dynamic and collaborative environment. With a focus on high autonomy and ownership, you'll be part of a world-class engineering team that values scientific thinking and pragmatism, offering competitive compensation and significant equity ownership. This role not only allows you to tackle ambitious challenges but also fosters personal and professional growth alongside industry leaders from top tech companies.
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Contact Detail:

Heart Mind Talent Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior Backend Engineer

✨Tip Number 1

Familiarise yourself with the latest trends in climate finance and how fintech is addressing these challenges. This knowledge will not only help you during interviews but also demonstrate your genuine interest in the company's mission.

✨Tip Number 2

Network with professionals in the climate and fintech sectors. Attend relevant meetups or webinars to connect with potential colleagues or mentors who can provide insights into the industry and possibly refer you to the position.

✨Tip Number 3

Showcase your experience with JVM-based languages and Postgres in practical scenarios. Prepare to discuss specific projects where you've implemented scalable systems or integrated payment solutions, as this will highlight your hands-on expertise.

✨Tip Number 4

Demonstrate your ability to work collaboratively by sharing examples of past teamwork experiences. Highlight how you’ve contributed to a culture of pragmatism and scientific thinking, which aligns with the company’s values.

We think you need these skills to ace Senior Backend Engineer

Backend Development
JVM-based Languages
PostgreSQL Expertise
Cloud Infrastructure (AWS)
System Design
Integration with Payment Providers
Scalable System Architecture
Collaboration Skills
Customer Interaction
Problem-Solving Skills
Agile Methodologies
Startup Experience
FinTech Knowledge
Scientific Thinking

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your backend development experience, particularly with JVM-based languages and Postgres. Emphasise any relevant projects or roles that showcase your ability to build financial infrastructure.

Craft a Compelling Cover Letter: In your cover letter, express your passion for tackling climate change through technology. Mention specific experiences that demonstrate your problem-solving skills and your ability to work in fast-paced, collaborative environments.

Showcase Relevant Experience: If you have startup or FinTech experience, be sure to detail this in your application. Highlight any projects where you integrated payment systems or worked directly with customers, as this aligns with the job's requirements.

Demonstrate Cultural Fit: Convey your enthusiasm for working in a mission-driven environment. Discuss how you thrive with autonomy and direct customer interaction, and provide examples of how you've contributed to a collaborative team culture in the past.

How to prepare for a job interview at Heart Mind Talent

✨Showcase Your Technical Skills

Be prepared to discuss your experience with JVM-based languages and Postgres in detail. Bring examples of past projects where you designed scalable systems or integrated with payment providers, as this will demonstrate your technical expertise.

✨Demonstrate Your Passion for Climate Impact

Since the company is focused on climate finance, express your enthusiasm for working on meaningful problems related to climate change. Share any relevant experiences or projects that highlight your commitment to sustainability and social impact.

✨Prepare for Collaborative Scenarios

Expect questions about teamwork and collaboration. Be ready to discuss how you've worked closely with customers or cross-functional teams in the past, as this role requires direct interaction with clients and stakeholders.

✨Ask Insightful Questions

Prepare thoughtful questions about the company's mission, culture, and the specific challenges they face in the climate fintech space. This shows your genuine interest in the role and helps you assess if the company aligns with your values.

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