Careers
At CSL, we’re proud to foster a positive, inclusive culture that values collaboration and continuous improvement. Our shared values motivate us to embrace each person’s unique skills and talents for shared success. Join our dynamic team today!

Collaboration
We build strong inter-team relationships and encourage knowledge sharing across the whole business.
Continuous Improvement
Inspiring our team members to find small and big ways to grow as individuals and as a company.
Customer Obsessed
Dedicated to delivering the best solutions and support in the business.
I’ve been working at CSL for two years and I’ve had two promotions within that time. There is a hierarchy, but you can’t see it because everyone works so well together. It’s a really fun place to work, there’s always something going on, inside and outside the office.
I would recommend CSL to anyone who would like a modern and flexible work-life balance, as well the chance to progress and learn more. There’s opportunity here to expand your knowledge, grow as a person and build a nice career.
My greatest career achievement is that I started at CSL as a Junior Developer and I’ve grown all the way to Product Owner. To me, that’s absolutely astonishing!
CSL has helped me develop so much, both personally and professionally. Every single day is different and a challenge, and it’s never boring!
CSL has a community feeling. I look forward to being there on a Monday, rather than leaving on a Friday! There’s no other way I could explain it – I love working here.
You get to work alongside some really great people and the company has really given me the opportunity to develop my own skills since I started here.
Current vacancies
Explore our open positions and find your dream job at CSL. Or simply contact us to learn more. We’d love to hear from you.
Technical Support Advisor
Who Are CSL Looking For?
You may have experience in customer support/customer services or alternatively you may have been working in an electronics environment fault finding or repairing equipment. In either case you should be energetic, keen to learn using your own initiative and be able to work well with others with a positive approach at all times. Above all, this role requires individual with a passion to provide excellent service often working under pressure in a busy office environment.
The Role:
Working within the customer service help desk environment, this role will involve handling inbound calls and emails to assist customers with a variety of product related questions or issues. Additionally, you will be required to liaise with mobile network providers to diagnose connectivity issues. You will also provide customer service support for our internal and external teams. Dealing with product questions / issues or investigations as needed.
This role also requires you to be part of an out of hours, on call rota which allows our customers to gain emergency support outside of usual office hours
Duties & Responsibilities:
This role will encompass a range of responsibilities including but not limited to:
- Handling inbound and outbound calls
- Liaising with mobile network providers
- Assisting with sales team queries
- Completing product investigation
- Creating support tickets and follow up
Key Skills & Qualifications Sought:
- Excellent communication skills both written and verbal.
- Ability to understand, diagnose and assist in a busy support environment
- 5 GCSEs (or equivalent) at grade A-C including Maths, English and Science
- PC Literate, including Word, Excel, E- Mail.
- Good organisational skills
Desirable Skills & Qualifications
- Electronic principles – BTEC, ONC or similar qualification passed or in progress – desirable
- Experience with mobile telecommunication equipment – desirable
- Foreign language skills (Dutch/French/Swedish) – desirable
- Customer services related qualification – desirable
- Other higher-level qualification i.e. A Level, NVQ, ONC – desirable
The above should not be viewed as an exhaustive list of skills and/or qualifications but rather CSLs view on the ideal candidate. If you feel you can meet three quarters of the requirements and learn the rest with support from CSL please apply now with an indication of your salary expectations for the role.
CSL operates as an equal opportunities employer and we welcome all applications regardless of gender, race, disability, sexual orientation, religion or belief, age, gender reassignment, marital or civil partnership status, pregnancy, or maternity.
Senior Software Engineer (PHP)
Who Are CSL Looking For?
To be a successful Senior Software Engineer, you must have strong technical expertise and problem-solving skills, capable of tackling complex development backlog tickets with confidence. You are expected to take ownership of backlog tasks, delivering high-quality implementations that align with coding standards, business objectives, and project timelines. Comfortable collaborating with peers and supporting other colleagues, you ensure that solutions are efficient, scalable, and maintainable, contributing to the overall success of the Signalling Engineering team.
The Role:
Software Engineers are responsible for engineering all of the systems, products and services that power CSL.
This means being responsible for the software design, code implementation, test coverage and operation of effective software and supporting toolsets within specific business and technology domains.
The role holder spends their time Exploring, Investigating, Developing, Enhancing and sometimes Decommissioning our provided Tools, Product and Services all with the aim of delivering the backlog, roadmap and overall corporate strategy with their success being measured by outcome value achieved and alignment to the agreed priorities.
This involves translating requirements into quality (meet required metrics) technical solutions then creating code for products and services adhering to our engineering standards that’s maintainable, supportable and with minimal risk to operate and able to be deployed safely into a production environment for use by customers and colleagues.
The Senior Software Engineer is a trusted expert within their Centre of Excellence (domain) for complex implementations, providing technical solutions and guidance. A Senior Engineer is expected to resolve challenging problems efficiently, leveraging their deep understanding of the design, topology, and methodology of their domain. They play a key role in ensuring successful outcomes through collaboration and technical capability.
Key to being successful is being responsible for creating a diverse, inclusive, and welcoming environment. It is essential to ensure that everyone feels supported to be their authentic self, can grow, develop, and positively contribute to delivering value.
Key Responsibilities:
People
- Able to work in close partnership with and under the guidance of others – Heads of Engineering, Solution Architect, Technical Programme Manager, Engineering Leads and Principal Engineers.
- Provide technical knowledge, insight, and guidance to other engineers as required.
- Review and give constructive feedback on others’ code through peer review processes.
- Support product and other stakeholders as required in shaping the Product roadmap.
- Be knowledgeable on their domain (Centre of Excellence) they are part of and its place alongside other domains and therefore are comfortable when others consult with them.
- Work with Principals and Engineering Leads in the broader Signalling engineering Team to shape, document, and enhance the best practices and technology standards.
Process
- Effectively participate in the team’s software development methodologies, such as pairing, code and documentation reviewing, testing, and continuous delivery.
- Work with project, product, and technical leads to design software and create implementable specifications and tasks at product and roadmap level.
- Ensure that the team’s technical documentation is always complete, accurate, and reliable.
- Provide frequent and accurate updates on ticket progress, expected timelines, work level outstanding, dependencies, risks, issues and duration spent to Delivery Programme Managers.
- Lead troubleshooting and resolution of issues throughout the product life cycle, including providing out-of-hours support for incident resolution and actively contribute within retrospectives.
- Ensure unit testing is always implemented alongside their code and is always fit for purpose.
- Investigate and evaluate technologies that could provide future benefit to CSL through research and experimentation.
Technology
- Comfortable and dependable in the design and development of effective software that meets complex, strategic business needs for the immediate roadmap and helps to achieve broader CSL objectives.
- Ensures their approaches, code, documentation and testing is aligned to Technology Standards and Practices.
- Ensure the code delivers works as expected (aligned to Acceptance Criteria and Definition of Done), meets wider specifications, reliability, cost efficiency and performance goals.
- Ensures the product and services is integrated with monitoring and support tooling aligned to its operating environment.
Ideal Experience and Knowledge Sought:
- Skilled in designing and building reliable software for large-scale applications in complex environments.
- Experienced in popular programming frameworks, development tools, databases, and deployment processes.
- Capable and comfortable in guiding others, working with stakeholders outside of their immediate team such as Product Owners/Managers, and influencing key decisions – including communicating concerns or issues.
- Demonstratable experience and committed to high coding standards, including being a recognised practitioner of test-driven development and software quality assurance methodologies.
- Previous experience and understanding of what it takes to ensure product changes succeed, through applying best design practices, and by keeping up with new technologies.
The above should not be viewed as an exhaustive list of skills and/or qualifications but rather CSLs view on the ideal candidate. If you feel you can meet three quarters or more of the requirements and learn the rest with support from CSL please apply now with an indication of your salary expectations for the role.
CSL operates as an equal opportunities employer and we welcome all applications regardless of gender, race, disability, sexual orientation, religion or belief, age, gender reassignment, marital or civil partnership status, pregnancy or maternity.
HR Director
Who Are CSL Looking For?
The ideal candidate will likely be a People Director in a smaller tech business, or a divisional leader in a larger business looking to step into their first number one role. We are looking for a candidate who has a strong grounding and a breadth of experience in complex, best in class HR models in different size businesses, who can drive change and transformation with agility.
Duties & Responsibilities:
This role will encompass a range of responsibilities including but not limited to:
Strategic Leadership
- Develop and execute a People strategy that is aligned to business objectives and growth plans
- Lead organisational design and scaling initiatives, including geo expansion
- Drive talent and succession planning with active focus on leadership development
- Manage both organic growth and support M&A integration planning
- Ensure international alignment and compliance across global operations
- Conduct strategic workforce analysis and planning
Business Partnership
- Establish aligned commercial ‘strategic’ HR plans at executive level
- Drive performance management transformation
- Lead PE liaison and investor relations from HR perspective
- Implement focus-scale enablers across the organisation
- Drive organisational design and resource optimisation
- Develop and execute comprehensive talent planning strategies
- Evolve and manage L&D/Skills development agenda as well as a robust performance management structure
- Lead BU engagement planning and execution
- Provide executive leadership coaching and development
Talent Acquisition Excellence
- Build successful resourcing capabilities
- Address critical bottlenecks and talent gaps
- Implement rapid mobilisation models for scaling
- Drive market understanding and competitive intelligence
- Develop entry-level talent pipelines
- Strengthen employer brand and employee value proposition
- Establish strategic platforms and partnership networks
Employee Experience & Culture
- Implement employer of choice testing and measurement frameworks
- Define and embed organisational culture and values
- Design and execute employee engagement strategies
- Create comprehensive internal communications and events programs
- Lead demographic understanding and inclusion initiatives
- Establish CSR, DEI&B, wellbeing, and ESG programs
HR Foundations & Operations
- Build robust HR technology roadmap focusing on data/insight delivery, leveraging AI capabilities
- Ensure operational efficiency across all HR functions
- Establish governance, legal, and policy frameworks
- Lead HR service delivery transformation
- Implement advanced analytics and reporting capabilities
- Build, lead and develop a first-class HR function that partners the business.
Key Skills & Qualifications Sought:
Requirements
- 10+ years of progressive HR leadership experience
- Proven track record in organisational transformation and strategic HR delivery
- Experience in scaling organisations through rapid growth phase
- Strong business acumen with ability to align HR strategy to business objectives
- International/global HR experience with multi-market operations
- M&A and integration experience preferred
Leadership Competencies
- Strategic Visionary: Ability to translate business strategy into compelling HR roadmaps
- Change Leader: Proven success in bringing energy, pace and discipline to organisational transformation
- Business Partner: Commercial mindset with ability to influence C-suite and board level
- People Developer: Track record of building high-performing teams and developing talent to high standards
- Cultural Champion: Experience in defining and embedding organisational culture
- Digital Innovator: Understanding of HR technology and data-driven decision making
Technical Expertise
- Talent Strategy: End-to-end talent planning, acquisition, and development
- Organisational Design: Experience in restructuring and optimising organisational effectiveness
- Employee Engagement: Proven methodologies for measuring and improving engagement. We are an accredited Great Place to Work employer, so understanding of this process, or similar would be useful.
- Performance Management: Fluency in all approaches to performance and development
- HR Analytics: Data-driven insights and metrics-based decision making
- Compliance & Governance: Strong understanding of employment law and risk management
The above should not be viewed as an exhaustive list of skills and/or qualifications but rather CSLs view on the ideal candidate. If you feel you can meet three quarters of the requirements and learn the rest with support from CSL please apply now with an indication of your salary expectations for the role.
CSL operates as an equal opportunities employer and we welcome all applications regardless of gender, race, disability, sexual orientation, religion or belief, age, gender reassignment, marital or civil partnership status, pregnancy, or maternity.
Billing & Collections Analyst
Who Are CSL Looking For?
As a Billing & Collections Analyst, you will be responsible for ensuring disconnections, reconnections and adjustments to the core billing database are applied accurately and in a timely fashion. You will have responsibility for managing the billing cycles for multiple business units in our Group across over 750k connections. This role is critical to CSL and involves liaising with customers and other departments in the business. You will answer customer billing queries and provide analyses of billing data. The Company has recently acquired several businesses and the role will support the associated ongoing billing integration projects.
The role requires an attention to detail and comfort with using and manipulating data within excel. The role also involves the use of our billing platform and Salesforce as a workflow management tool.
CSL are looking for an energised Junior Billing & Collections Analyst who thrives off numbers and delivering first class service to CSL’s customer base.
Duties & Responsibilities:
This role will encompass a range of responsibilities including but not limited to:
- Daily processing of customer disconnections and change requirements.
- Manage communication between customers and the Technical Support team in relation to billing changes.
- Machine to Machine and International billing management including customer query management, renewals, activations, validations and customer set up.
- Machine to Machine and international monthly billing reporting and reconciliations
- Hours will be between 8:30 and 6pm on a shift pattern e.g 8:30 – 5pm, 9:00 – 5:30pm etc.
- Will need to work one Saturday roughly every 6-8 weeks for 1.5 times salary and OT pay.
- Supporting the credit controller in chasing customers for outstanding balances on the phone and via email.
- Understand how we invoice and our payment terms.
Key Skills & Qualifications Sought:
- Strong communication skills
- A strong team player
- Drive, energy and enthusiasm.
- Eager to develop and grow.
- Great communication skills
The above should not be viewed as an exhaustive list of skills and/or qualifications but rather CSLs view on the ideal candidate. If you feel you can meet three quarters of the requirements and learn the rest with support from CSL please apply now with an indication of your salary expectations for the role.
CSL operates as an equal opportunities employer and we welcome all applications regardless of gender, race, disability, sexual orientation, religion or belief, age, gender reassignment, marital or civil partnership status, pregnancy, or maternity.
Sector Specialist – Utilities
Who Are CSL Looking For?
CSL is seeking professionals with deep expertise within the utilities sector, who understand the regulatory landscape, market dynamics, and the wider utilities ecosystem, with particular emphasis on the need for resilient connectivity. The ideal candidate will have a strong grasp of sector‑specific challenges facing utility providers and be able to diagnose complex operational and commercial problems, tailoring solutions to meet the unique needs of the industry. They will be experienced in driving success within the utilities vertical and bring established customer and partner relationships that can generate direct sales opportunities.
Credibility with senior decision‑makers across utility organisations is essential, alongside a strong understanding of CSL’s utilities‑focused use cases. The role will also support marketing activity by contributing sector‑relevant insights, thought leadership, and messaging that resonates with utility audiences. In addition, the individual will work closely with product and marketing teams, providing market insight to help shape solutions and offerings that address current and emerging challenges across the utilities sector.
Duties & Responsibilities:
This role will encompass a range of responsibilities including but not limited to:
- Seen as experts in their field
- Understands the regulations, ecosystem and wider stakeholder map of their sector
- Responsible for driving sector CSL brand awareness
- Sizes the sector
- Split sector as required in to sub-sectors to aid targeted marketing efforts
- Define end customer level problems and work with product to define CSL use cases to resolve
- Aim: To get CSL to be seen as the only choice for connectivity in that sector
- All sector specialists to be trained to have deep knowledge of CSL’s sector agnostic product set.
- Awareness of all key use cases for CSL solutions within their sector
- All sales staff to be trained in the ‘CSL Sales Way’ building on success in B&S
Key Skills & Qualifications Sought:
- Relationship builder
- Analytical
- Strong sector specific networker
- Problem solver
- Speaks language of the industry
- Focused on credibility
- Experienced
- Role definitions developed for sector specialists
- Search for resource within known end customers (e.g. Thames Water), industry associations, industry specific recruiters
The above should not be viewed as an exhaustive list of skills and/or qualifications but rather CSLs view on the ideal candidate. If you feel you can meet three quarters of the requirements and learn the rest with support from CSL please apply now with an indication of your salary expectations for the role.
CSL operates as an equal opportunities employer and we welcome all applications regardless of gender, race, disability, sexual orientation, religion or belief, age, gender reassignment, marital or civil partnership status, pregnancy, or maternity.