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Job description
Salary: £67,000 – £90,000
Senior Software Engineer / Tech Lead (x5 Roles) – Go, PHP, OOP, AWS, APIs, Full Stack Engineering
Award-Winning, High-Growth SaaS Scale-Up | Remote UK | £67,000–£90,000 + Exceptional Benefits
Areti Group – Carbon Positive Tech Recruitment | People & Planet Before Profit
About the Opportunity
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.
The Opportunity
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
Outcomes over presenteeism
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.
Areti Group – Climate Positive Tech Recruitment
We’re on a mission to put people and the planet first, leaving the world better than we found it.