Principal Software Engineer

SR2 | Socially Responsible Recruitment | Certified B Corporation™; Greater London; Hybrid; GBP 100,000 - 150,000; Full time

Benefits offered by this job

Competitive salary

Bonus

Equity

Hybrid working with flexibility

Strong engineering culture

Job summary

A technology recruitment firm is looking for a Principal / Lead Full Stack Java Developer in London. The role involves designing and delivering scalable software systems utilizing Java and React, mentoring engineers, and defining technical solutions. Required experience includes strong architectural judgement, microservice architecture, SQL and NoSQL databases, and cloud experience. The position offers hybrid working flexibility, a competitive salary, and an influential role with real technical ownership.

Qualifications

• Senior engineer with architectural judgement.
• Experience in full-stack environments.
• Strong focus on testing strategies and automation.
• Solid understanding of Domain‑Driven Design (DDD) and system decomposition.
• Experience with SQL and NoSQL databases.
• Strong focus on testing strategies, automation, and quality.
• Containerisation and cloud experience (Docker, Kubernetes, AWS).
• Confident mentoring engineers and leading technical decisions.

Responsibilities

• Lead the design and delivery of scalable software systems.
• Define architecture and service boundaries.
• Work hands-on across the stack with Java/Spring and React.
• Mentor engineers and lead technical discussions.
• Mentoring engineers and leading technical discussions.
• Advising stakeholders and customers on technical trade-offs and solution design.
• Reducing technical debt and improving long‑term maintainability.

Skills

Java

React

Microservice architectures

Domain-Driven Design (DDD)

SQL and NoSQL databases

Testing strategies

Containerisation and cloud experience (Docker, Kubernetes, AWS)

Mentoring

Docker

Kubernetes

AWS

Mentoring

Tools

AWS

Docker

Kubernetes

Job description

1 week ago τί Be among the first 25 applicants

SR2 | Socially Responsible Recruitment | Certified B sortion™ provided pay range

This range is provided by SR2 | Socially Responsible Recruitment | Certified B Corporation™. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from SR2 | Socially Responsible Recruitment | Certified B Corporation™

Connecting the best software professionals with top-tier opportunities within tech for impact businesses. Contract & Permanent opportunities pelvic…

🏅 Calling our Principal / Lead Full Stack Java Developers in or around London – I'm HIRING a Principal Software Engineer (Full-Stack Java & React) 🏅

I'm partnering with a fast growing cloud consultancy creating scalable systems across complex, high impact environments.

Key responsibilities

• Leading the design and delivery of modern, scalable software systems
• Defining architecture, service boundaries, and system decomposition
• Working hands‑on across the stack, particularly with Java/Spring and React
• Improving engineering practices around testing, automation, and developer productivity
• Mentoring engineers and leading technical discussions
• Advising stakeholders and customers on technical trade-offs and solution design
• Reducing technical debt and improving long‑term maintainability

What We’re Looking For

• Senior engineer with strong architectural judgement and a passion for building well‑designed systems.
• Strong background in Java (Spring) and React within full‑stack environments.
• Experience designing and delivering microservice‑based architectures.
• Solid understanding of Domain‑Driven Design (DDD) and system decomposition.
• Experience with SQL and NoSQL databases.
• Strong focus on testing strategies, automation, and quality.
• Containerisation and cloud experience (Docker, Kubernetes, AWS).
• Confident mentoring engineers and leading technical decisions.

Nice to have

• Experience in regulated or public‑sector environments.
• Exposure to cloud platforms beyond AWS ( RSS / GCP).
• Familiarity with modern UI frameworks or accessibility‑focused design.

Benefits

• Senior, influential role with real technical ownership.
• Hybrid working with flexibility.
• Competitive salary, bonus, and equity.
• Strong engineering culture focused on quality, sustainability, and modern practices.
• Opportunity to work on complex цаг знач systems with experienced peers.

Application

📩 Apply now by sending your CV AND contact number to [e-mail] or dropping me a call/text at 07378548899.

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Consulting and Information Technology

Industries

IT Services and IT Consulting