Senior Software Engineer

The Portfolio Group; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A growing technology company in London is seeking a Senior Software Engineer to build and maintain scalable applications using Node.js and Python. The ideal candidate will have proven experience in backend services, strong communication skills, and an agile mindset. This role focuses on collaborative improvements, innovation, and mentorship within the tech team.

Qualifications

• Proven experience in Node.js and Python.
• Strong understanding of microservices, CI/CD, and DevOps practices.
• Confident writing performant frontend code.

Responsibilities

• Build and maintain scalable, secure applications using Node.js and Python.
• Write clean, test-driven code with a focus on performance and usability.
• Collaborate across teams to deliver iterative improvements.

Skills

Node.js

Python

microservices

CI/CD

DevOps

frontend development

Agile mindset

Tools

Drupal 7

Job description

We’re looking for a Senior Software Engineer to join a growing team building smart, scalable tools used by professionals across a range of industries. You’ll work onsite in London, helping shape robust backend services and responsive user experiences using Node.js and Python.

What You’ll Do

• Build and maintain scalable, secure applications using Node.js, Python, and modern architectural patterns
• Write clean, test‑driven code with a focus on performance and usability
• Collaborate across teams to deliver iterative improvements
• Lead on innovation and continuous delivery best practices
• Support and mentor others while staying hands‑on with the tech

What We’re Looking For

• Proven experience in Node.js and Python
• Strong understanding of microservices, CI/CD, and DevOps practices
• Confident writing performant frontend code
• Agile mindset with excellent communication skills
• Enthusiastic about solving problems and sharing knowledge

Nice to Have

• Experience with Drupal 7
• Familiarity with serverless architectures, quality engineering, or modern frontend frameworks