Senior Systems and Infrastructure Engineer

Fluxys SA; Cambridge; Hybrid; GBP 100,000 - 125,000; Full time

Job summary

A leading energy management company in Cambridge is seeking a Senior Systems and Infrastructure Engineer with over 10 years' experience in IT networking and systems administration. This role involves maintaining core systems, designing new services, and providing user support. The position offers an attractive benefits package, including flexible working hours and opportunities for professional development. Join a passionate team dedicated to contributing to a sustainable energy future and showcase your skills in a dynamic workspace.

Benefits

25 days’ holidays

Annual discretionary bonus

Company pension scheme (6% contribution)

Private health insurance

Flexible working hours

Remote working options

Employee assistance program

Team lunches

Qualifications

• 10+ years’ experience as an IT Systems and Network Engineer or similar role.
• Strong skills in networking technologies.
• Experience in Windows and Linux systems administration.

Responsibilities

• Maintain our network and core systems.
• Design and support new systems and services.
• Provide day-to-day support to users and customers.
• Perform routine software maintenance.

Skills

Networking skills (TCP/IP, DNS, etc.)

Windows Server systems administration

Linux systems administration

Email management (DMARC, SPF, etc.)

Database administration (SQL Server, Oracle)

Microsoft 365 and Entra ID administration

Job description

GMSL is the market‑leading provider of 24/7 energy portfolio management services and software in Europe and plays a vital role in the energy business. We have unparalleled expertise in the industry, built up over 25 years of operating in energy markets throughout Europe.

Our software and services are used by some of the largest energy companies in the world operating 24 hours a day 365 days a year. For more background on GMSL see https://www.gmsl.co.uk.

As a Fluxys group company it is our mission to contribute to a sustainable energy future and our passionate teams secure reliable and affordable energy flows into the European market.

We have a great opportunity for a Senior Systems and Infrastructure Engineer to join our team in Cambridge.

Job Purpose

We are a small team of 5 engineers working within a larger software and IT department of approximately 43 people, so we still have the feeling of working for a small company.

IT is a core part of GMSL’s business. We work closely with our software teams on our SaaS and B2B messaging solutions as well as supporting the day‑to‑day networking and systems you’d expect to find in most organisations.

We use a wide range of technologies across both On‑Prem and Cloud environments to develop solutions for the business. GMSL’s clients tend to be large companies so you will find we have much more IT than a normal company our size.

Our IT Engineers are multi‑skilled in areas such as networking, servers, database platforms and there is always opportunity to learn. Our work can vary in size from large engineering projects to providing responses to customer support cases escalated from the helpdesk. We also provide 24/7/365 out‑of‑hours cover on a 1‑week‑in‑4 rota to ensure business continuity.

We know it’s unrealistic to find someone who ticks all the boxes which is why we are looking for people with a drive to learn and a passion for the technology sector.

Your responsibilities

• Maintaining our network and core systems
• Designing, implementing and supporting new core systems and services
• Communicating progress and escalating issues through daily meetings
• Providing day‑to‑day support to our users and external customers
• Performing routine scheduled software maintenance
• Collaborating with other teams to develop new business solutions
• Evaluating third‑party products against business needs
• Following security practices and standards
• Maintaining business continuity
• Testing our backup systems and disaster recovery capabilities
• Maintaining and creating documentation

About you

We are looking for the following essential technical knowledge and experience:

• 10+ years’ experience as an IT Systems and Network Engineer, or similar role
• Strong networking skills (e.g. TCP/IP, DNS, ports and protocols, routers, bridges, latency, packet loss, firewall rules, VPNs, knowledge of MTUs etc.)
• Windows Server systems administration (Active Directory, GPOs, RADIUS, CA management, RDS, PowerShell)
• Linux systems administration (Ubuntu, Exim, DoveCot, Samba, Apache2, OpenSSL, PAM, SELinux)
• Email (DMARC, SPF, SMTP, MX, IMAP)
• Willing to share on‑call rota, one week in four, to resolve critical issues only, with renumeration provided

Ideally candidates will also have experience in one or more of these important aspects:

(In each case from analysis/characterisation of services to selection for a use case, setup, troubleshooting, administration, monitoring and maintenance)

• Database administrator and architect for SQL Server and/or Oracle or similar
• Strong knowledge of Microsoft 365 and Microsoft Entra ID administration
• Knowledge of regulatory requirements and industry standards
• Virtual machine hosts and storage clusters
• Azure, AWS, GCP knowledge

We are also looking for the following soft skills:

• Leadership – Capable of leading projects, as required
• Teamwork – Able to collaborate on projects, as required
• Multi‑tasking – Comfortable picking up existing projects and interpreting technical detail
• Communication – excellent communication skills both written and face‑to‑face, engaging with management and peers
• Adaptability – Flexible in dealing with multiple tasks, priorities and technical detail

Why should you apply?

Salary will be reflective of your level of experience – please outline your salary expectations in your application. Additionally, we offer a very attractive package of benefits including 25 days’ holidays, annual discretionary bonus scheme, Company pension scheme (6% employer contribution), private health insurance, flexible working hours and remote working, employee assistance program, casual dress and a relaxed environment, loyal service award, cycle to work scheme, fresh fruit and great coffee, free access to Cambridge University Botanic Gardens, monthly team pub lunches.

But above all:

• Contribute and innovate towards a carbon‑neutral world
• Develop and shape a brilliant career in a fast‑growing international group
• Showcase your strong appetite to contribute towards an array of dynamic projects that challenge your intellect