Senior/Mid Level Software Engineer

ReliaQuest; London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A leading cybersecurity company in London is looking for a Senior/Mid Level Software Engineer. In this role, you will develop innovative solutions for threat detection, collaborate with various teams, and oversee the software development lifecycle. The ideal candidate will have over 3 years of experience in software development and proficiency in languages such as Java, Spring, and React. A strong grasp of security principles and cloud platforms is a plus. Competitive compensation and the chance to work on large-scale systems are offered.

Qualifications

• 3+ years of experience in Software Development.
• Proficiency in English, both written and verbal.
• Strong understanding and application of software security principles.

Responsibilities

• Innovate and develop creative solutions using cutting-edge technologies.
• Design and implement REST and GraphQL APIs.
• Oversee the continuous integration and deployment of technologies.
• Automate and optimize all stages of the software development lifecycle.
• Collaborate with various business units for seamless product usage.

Skills

Java

Spring

React

GraphQL

Python

NodeJS

PostgreSQL

Snowflake

Software security principles

Tools

AWS

GCP

Azure

Kafka

RabbitMQ

OpenSearch

Prometheus

Kubernetes

Job description

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Senior/Mid Level Software Engineer, London

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Client:

ReliaQuest

Location:

London, United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Reference:

b40bd7b96b2d

Job Views:

30

Posted:

12.08.2025

Expiry Date:

26.09.2025

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Job Description:

Why it’s worth it:

Are you a passionate Software Engineer with a knack for solving complex problems and a love for innovation? At ReliaQuest, you'll have the opportunity to write groundbreaking code and manipulate data in unprecedented ways, driving the automation of threat detection and response in one of the world’s fastest-growing industries. You'll lead the creation, testing, and deployment of cutting-edge security technology for enterprise customers worldwide. Most importantly, you'll collaborate with some of the brightest minds in the industry and make a direct impact on the growth and success of ReliaQuest. This role offers you the chance to take ownership of projects and work on systems that operate at a significant scale, providing a unique opportunity to see the tangible results of your efforts.

The everyday hustle:

• Innovate and develop creative solutions using cutting-edge technologies to continuously enhance our GreyMatter platform.
• Design and implement REST and GraphQL APIs to securely streamline and automate our customers' security operations.
• Oversee the continuous integration and deployment of complex technologies.
• Automate and optimize all stages of the software development lifecycle proactively.
• Work on systems that operate at a significant scale, providing a unique opportunity to see the tangible results of your efforts.
• Collaborate closely with various business units, both internally and externally, to ensure seamless product usage and maximum potential.
• Mentor and support team members while fostering a culture of continuous collaboration.
• Take ownership of projects and drive them to completion, ensuring high-quality deliverables.

Do you have what it takes?

• 3+ years of experience in Software Development using languages, frameworks and technologies such as Java, Spring, React, GraphQL, Python, NodeJS, PostgreSQL, and Snowflake or equivalent.
• Proficiency in English, both written and verbal.
• Strong understanding and application of software security principles.
• Demonstrated ability to take ownership of projects and drive them to successful completion.

What makes you uncommon?

• Practical experience with technologies like Snowflake, Kafka, RabbitMQ, OpenSearch, Prometheus, Kubernetes, or other data pipeline and orchestration tools.
• Expertise with cloud platforms such as AWS, GCP, or Azure.
• Strong grasp of unit testing, continuous integration, and deployment practices.
• Proven track record of working on large-scale systems and delivering high-quality results.
• Advanced education or relevant experiences that allow you work with some of the world's best engineering minds.