Senior Fullstack Engineers - Series A Funded - Huge Growth Plans - React React Native, Node.j[...]

Areti Group | B Corp™; Greater London; On-site; GBP 96,000 - 160,000; Full time

Benefits offered by this job

Meaningful Equity

Central London Office

4 Days Per Week Onsite

Job summary

Areti Group | B Corp™ in Central London is seeking Senior Fullstack Engineers to join a fast-growing tech business backed by a Series A fund. You'll own end-to-end product areas, shape architecture and mentor junior engineers while remaining hands-on to build scalable software.

The role offers up to £160,000 base salary plus meaningful equity, with a 4-day-per-week onsite pattern at their Central London office.

Qualifications

• Proven experience building scalable web applications.
• Strong ownership and mentoring capability.
• Hands-on software engineering with end-to-end delivery.
• Ability to influence architecture and product decisions.
• Experience in fast-growing startups or scale-ups.

Responsibilities

• Own business-critical product areas and drive architectural decisions.
• Mentor engineers and maintain hands-on coding.
• Collaborate with product, design, and leadership to ship quickly.
• Deliver scalable systems using modern web technologies.

Skills

React

React Native

Node.js

TypeScript

SQL

AWS

Cloud-native Architecture

AI-powered Products

Job description

Senior Fullstack Engineers - Series A Funded - Huge Growth Plans

Up to £160,000 + Meaningful Equity | Central London | 4 Days Per Week

ARETI have been exclusively retained by one of the UK's fastest-growing technology companies following a significant investment round.

Over the next 8 weeks, we're hiring 9 exceptional Senior Fullstack/Software Engineers as our client enters the most exciting stage of its journey.

This isn't a replacement hire.

This is a business that's just secured significant funding, is investing heavily in technology, and is planning to double in size over the next 12 months.

If you've ever wanted to join a company just before it becomes something special, this is that opportunity.

We're looking for engineers who want to build products that matter, solve genuinely difficult technical problems and help shape the future of a rapidly scaling business.

• Major investment secured to accelerate growth.
• Engineering is the biggest area of investment.
• Hiring 9 exceptional engineers over the next 8 weeks.
• Planning to double in size over the next 12 months.
• Huge technical ownership from day one.
• AI sits at the heart of the product strategy.
• Small, high-performing engineering teams.
• Direct access to senior leadership and technical decision-making.
• Up to £160,000 base salary, meaningful equity and an outstanding benefits package.

The Opportunity

This is far more than another Senior Engineering position.

You'll own business-critical product areas, influence architectural decisions, mentor exceptional engineers and remain deeply hands-on building software that directly impacts customers and business growth.

You'll work alongside Product, Design and Engineering Leadership to solve complex problems, ship quickly and help establish the technical foundations for the company's next phase of growth.

If you enjoy ownership, autonomy and building products at scale, you'll love this environment.

You'll be working with a modern engineering stack including:

• React
• React Native
• Node.js
• TypeScript
• SQL
• AWS
• Cloud-native Architecture
• AI-powered Products

Don't worry if your experience is with a different backend language.

We're far more interested in exceptional engineers than experience with one particular technology. If you've built large-scale systems using Java, Kotlin, Go, Python, C#, Scala, Rust or similar, we'd love to hear from you.

Great engineers learn new technologies.

We hire for engineering excellence- not keywords.

• Have designed and built products at scale.
• Have experience building backend systems using any modern programming language.
• Enjoy solving complex engineering challenges.
• Think commercially and understand the impact their work has on customers.
• Thrive in product-led businesses.
• Have experience working within start-ups, scale-ups or high-growth technology companies.
• Lead through influence, collaboration and technical excellence.
• Have a bias for action and enjoy shipping quickly.
• Are curious, ambitious and love learning.
• Want to join a business entering an exciting period of hyper-growth.

This is a collaborative, high-performance engineering environment.

The team works together from their Central London office 4 days per week because they believe the best software is built together.

Architecture discussions happen on whiteboards.

Decisions are made fast.

You'll work alongside exceptional engineers who genuinely enjoy solving difficult problems together.

If you're looking for a fully remote role, this won't be the right opportunity.

If you're looking to build something extraordinary with equally ambitious people, you'll feel right at home.

• Meaningful Equity
• Central London Office
• 4 Days Per Week Onsite

If you're looking for the role that could define the next stage of your career- and want to join a company before it doubles in size - we'd love to speak with you.

All conversations will be handled in the strictest confidence.