Database Engineer (MongoDB + PostgreSQL) - Global HA

CGG; Oxford; On-site; GBP 53,000 - 93,000; Full time

Benefits offered by this job

Visa sponsorship

Relocation packages

Competitive salary

Job summary

Viridien is a Crawley-based technology, digital and Earth data company. The role focuses on designing, maintaining and optimising database platforms that support global production systems and high-performance computing workloads.

You will manage MongoDB and relational databases, install and administer MongoDB sharded clusters and replica sets, monitor health with Prometheus and Grafana, and collaborate with software developers and operations to deliver reliable, scalable database services.

Qualifications

• Bachelor's degree in Computer Science or a related discipline, or equivalent practical experience.
• Experience administering MongoDB in production environments, including sharded clusters and replica sets.
• Experience supporting PostgreSQL or other enterprise relational databases.
• Experience with MongoDB Ops Manager and monitoring tools such as Prometheus and Grafana.
• Strong knowledge of backup, recovery, PITR, and High Availability strategies.
• Experience troubleshooting and optimising database performance.
• Strong analytical and problem-solving skills.
• Ability to work effectively in production-critical environments.
• Preferred: experience supporting globally distributed or high-availability database platforms.
• Preferred: experience with database automation using Bash, Python, or Golang.
• Preferred: familiarity with Linux, Docker, Kubernetes, GitLab, or DevOps practices.
• Preferred: knowledge of data modelling, schema design, and database optimisation techniques.
• Preferred: experience supporting databases for microservices or distributed applications.
• Preferred: familiarity with ANSI SQL and relational database concepts.
• Preferred: experience contributing to QA and testing of database platforms.

Responsibilities

• We design, maintain, and optimise database platforms that support global production systems and high-performance computing workloads.
• We manage, maintain, and support MongoDB and relational database environments.
• We install, configure, and administer MongoDB sharded clusters and replica sets.
• We support PostgreSQL environments, including day-to-day administration, backup, and recovery.
• We monitor database health, performance, and availability using Prometheus, Grafana, and MongoDB Ops Manager.
• We analyse and optimise database performance, queries, and configurations.
• We develop strategies to support data growth, scalability, and high-traffic workloads.
• We implement backup, restore, PITR, and HA solutions.
• We troubleshoot database issues and ensure reliability of production systems.
• We support business continuity through robust operational practices.
• We work with development teams to improve database design and application performance.
• We support testing, validation, and QA activities for database changes.
• We contribute to automation, operational improvements, and database best practices.

Education

Bachelor's degree in Computer Science or related discipline

Tools

MongoDB

PostgreSQL

Prometheus

Grafana

MongoDB Ops Manager

Bash

Python

Golang

Docker

Kubernetes

Linux

GitLab

SQL

DevOps

Job description

Viridien is a Crawley-based technology, digital and Earth data company. The role focuses on designing, maintaining and optimising database platforms that support global production systems and high-performance computing workloads.

You will manage MongoDB and relational databases, install and administer MongoDB sharded clusters and replica sets, monitor health with Prometheus and Grafana, and collaborate with software developers and operations to deliver reliable, scalable database services.