Senior Software Engineer / Tech Lead (x5 Roles) – Go, PHP, OOP, AWS, APIs, Full Stack Engineering - Remote in London

Senior Software Engineer / Tech Lead (x5 Roles) – Go, PHP, OOP, AWS, APIs, Full Stack Engineering - Remote in London

London Full-Time 67000 - 90000 £ / year (est.) Working from home possible
Areti Group | B CorpTM

At a Glance

  • Tasks: Lead and mentor teams while driving a major tech transformation.
  • Company: Join an award-winning, high-growth SaaS scale-up with a climate-positive mission.
  • Benefits: Enjoy competitive salary, remote work, generous holiday, and a £1,000+ learning budget.
  • Other info: Fast hiring process with offers within 3 days; flexible working culture.
  • Why this job: Shape the future of tech with cutting-edge tools and make a real impact.
  • Qualifications: Experience in Go, PHP, OOP, and API development; leadership skills are a plus.

The predicted salary is between 67000 - 90000 £ per year.

We are hiring five exceptional Senior Software Engineers / Tech Leads for one of the UK's fastest-growing technology scale-ups. Following significant growth and investment, the business is embarking on a major platform evolution programme, transitioning from a mature PHP-based architecture towards a modern, scalable, cloud-native ecosystem built around Go, APIs, distributed services, and event-driven architecture.

This is a rare opportunity to help shape the future technical direction of a highly successful SaaS platform used by global organisations. We're looking for engineers who enjoy solving complex problems, influencing architecture, mentoring teams, and remaining hands-on with technology.

These roles sit at the heart of the engineering organisation. You'll lead technical delivery while helping drive a strategic technology transformation, modernising existing systems and building the next generation of products and services. This role combines:

  • Hands-on software engineering
  • Technical leadership
  • Architectural ownership
  • Mentoring and coaching
  • Cloud-native platform development
  • Full-stack product delivery

You'll work closely with Engineering, Product, Platform, and Architecture teams to build highly scalable solutions capable of supporting continued rapid growth.

What You'll Be Doing

  • Leading and mentoring teams of talented software engineers
  • Driving engineering best practices around Object-Oriented Design, SOLID principles, clean architecture, and maintainable code
  • Designing and building scalable APIs and backend services
  • Helping evolve a large PHP platform towards modern Go-based microservices
  • Contributing across the full stack, from backend services through to customer-facing applications
  • Influencing technical strategy, architecture, and platform direction
  • Working closely with Product teams to deliver business-critical features
  • Supporting CI/CD, cloud infrastructure, observability, and platform reliability initiatives
  • Taking ownership from concept through design, development, testing, deployment, and ongoing optimisation
  • Playing a key role in hiring and developing future engineering talent

Technology Environment

We're specifically seeking polyglot engineers who are comfortable working across multiple languages and technologies.

Core Technologies

  • Go (Golang)
  • PHP
  • REST APIs & Service-Oriented Architecture
  • Object-Oriented Programming (OOP)
  • AWS Cloud Platform
  • MySQL / PostgreSQL
  • Docker & Containerisation
  • CI/CD Pipelines
  • Git & Modern Development Practices

Front-End Technologies

  • JavaScript / TypeScript
  • Vue.js, React or modern SPA frameworks
  • HTML5
  • CSS / Tailwind

Bonus Experience

  • Event-Driven Architecture
  • Kafka, RabbitMQ or messaging systems
  • Kubernetes
  • Terraform / Infrastructure as Code
  • Distributed Systems
  • Domain-Driven Design (DDD)
  • Observability and Monitoring

About You

We're less interested in job titles and more interested in engineering mindset. You'll likely be:

  • A strong software engineer with deep OOP and design pattern experience
  • An advocate of clean code and engineering excellence
  • Comfortable working across both backend and frontend technologies
  • Experienced building and consuming APIs at scale
  • A polyglot developer who enjoys working across multiple languages
  • Interested in modern Go development and platform engineering
  • Experienced with PHP and excited by large-scale transformation programmes
  • Comfortable influencing architecture and technical decisions
  • A natural mentor who enjoys helping engineers grow
  • Passionate about building scalable, maintainable software

What Success Looks Like

In your first 12 months you'll help:

  • Accelerate the migration towards Go-based services
  • Modernise key areas of the existing PHP platform
  • Improve scalability, resilience, and performance
  • Drive API-first engineering practices
  • Enhance cloud-native capabilities within AWS
  • Support engineering teams through the next stage of platform growth
  • Raise technical standards across the organisation

Package & Benefits

  • £67,000–£90,000 depending on experience
  • Remote-first working
  • £1,000+ annual learning and development budget
  • 33 days holiday rising to 40 days
  • 4-week paid sabbatical after 5 years
  • Private healthcare
  • Income protection
  • Death-in-service cover
  • Matched pension contribution up to 5%
  • Innovation Weeks twice per year
  • 20 hours paid volunteering leave
  • Flexible working arrangements
  • Inclusive, collaborative engineering culture

Working Model

  • Remote-first across the UK
  • Flexible hours around a 37.5-hour week
  • Occasional team collaboration days
  • High trust, high autonomy environment

Immediate Hiring

Interview slots are already reserved for strong candidates. Please ensure your CV clearly demonstrates:

  • Golang and/or PHP expertise
  • Object-Oriented Design principles
  • API development experience
  • AWS cloud experience
  • Full-stack engineering capability
  • Technical leadership or mentoring experience
  • Architectural ownership and decision-making

Why This Role?

These roles are incredibly urgent, with interview slots pre-booked for next week. We are moving fast, and suitable candidates can expect offers within 3 days of interviews. This is an exciting opportunity to join one of the most forward-thinking companies in the market. If you're a polyglot fullstack developer ready to take on new challenges, eager to learn, and passionate about technology and teamwork, we want to hear from you.

Senior Software Engineer / Tech Lead (x5 Roles) – Go, PHP, OOP, AWS, APIs, Full Stack Engineering - Remote in London employer: Areti Group | B CorpTM

Areti Group is an award-winning, high-growth SaaS scale-up that prioritises both people and the planet, offering a remote-first work environment across the UK. With exceptional benefits including a generous learning budget, extensive holiday allowance, and a collaborative culture, employees are empowered to grow through mentorship and innovative projects. Join us to be part of a transformative journey in technology while enjoying a flexible and inclusive workplace that values your contributions.

Areti Group | B CorpTM

Contact Details:

Areti Group | B CorpTM Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Senior Software Engineer / Tech Lead (x5 Roles) – Go, PHP, OOP, AWS, APIs, Full Stack Engineering - Remote in London

Tip Number 1

Network like a pro! Reach out to your connections in the tech industry, especially those who work at companies you're interested in. A friendly chat can lead to referrals, which can significantly boost your chances of landing that Senior Software Engineer role.

Tip Number 2

Prepare for technical interviews by brushing up on your coding skills and system design principles. Practice common algorithms and data structures, and be ready to discuss your past projects in detail. This will show your potential employer that you’re not just a great coder but also a problem solver.

Tip Number 3

Don’t underestimate the power of a good portfolio! Showcase your best projects, especially those involving Go, PHP, and cloud-native solutions. A well-organised GitHub profile can speak volumes about your skills and passion for software engineering.

Tip Number 4

Apply through our website! It’s the quickest way to get noticed. Make sure your application highlights your experience with APIs, OOP, and any leadership roles you've had. We want to see how you can contribute to our exciting tech transformation!

We think you need these skills to ace Senior Software Engineer / Tech Lead (x5 Roles) – Go, PHP, OOP, AWS, APIs, Full Stack Engineering - Remote in London

Go (Golang)
PHP
Object-Oriented Programming (OOP)
REST APIs
Service-Oriented Architecture
AWS Cloud Platform
MySQL

Some tips for your application 🫡

Tailor Your CV:Make sure your CV highlights your experience with Go, PHP, and OOP. We want to see how your skills align with the role, so don’t be shy about showcasing relevant projects and achievements!

Show Off Your Leadership Skills:Since this role involves mentoring and technical leadership, include examples of how you've led teams or influenced architectural decisions in your previous roles. We love seeing candidates who can inspire others!

Be Clear and Concise:When writing your application, keep it straightforward. Use clear language to describe your experience and avoid jargon that might confuse us. We appreciate a well-structured application that gets straight to the point!

Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you’re considered for the role quickly. Don’t miss out on this opportunity!

How to prepare for a job interview at Areti Group | B CorpTM

Know Your Tech Stack

Make sure you’re well-versed in Go, PHP, and the other technologies mentioned in the job description. Brush up on your knowledge of OOP principles and be ready to discuss how you've applied them in past projects.

Showcase Your Problem-Solving Skills

Prepare examples of complex problems you've solved in previous roles. Be ready to explain your thought process and the impact of your solutions, especially in relation to scalable APIs and cloud-native development.

Demonstrate Leadership and Mentoring Experience

Since this role involves mentoring, think of specific instances where you've guided junior engineers or led a project. Highlight your approach to fostering a collaborative team environment and driving engineering best practices.

Engage with the Company’s Vision

Research Areti Group and their mission to put people and the planet first. Be prepared to discuss how your values align with theirs and how you can contribute to their goals, particularly in the context of their platform evolution.