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.
Senior Software Engineer (Python)
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.
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.
Technical Support Team Leader
Who Are CSL?
- We are a leading international critical IoT connectivity expert provider specialising in sectors including Building & Security, Healthcare & Telecare, Infrastructure, Retail & Hospitality, and Transport & Logistics.
- We are a rapidly growing, private equity-backed company with an international presence, operating across the UK, Ireland, the Nordics, Benelux, Spain, and North America.
- We have completed 7 acquisitions, with each acquired business adding further expertise and scale to our market-leading propositions.
- We have over 30 years of experience and now operate over 3 million active IoT connections around the world.
- We now have over 270 employees within the Group – and this is growing all the time.
- We are ranked 10th in the 2025 UK’s Best Workplaces™ by Great Place To Work®
- Our high performing team is renowned for delivering leading solutions and services, backed up by world-class customer support across markets that demand nothing less than absolute certainty.
- Our products and solutions have won over 20 awards across a range of industries.
Who Are CSL Looking For?
You should have experience in customer support/customer services or a contact centre environment. 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 always. People skills and leading from the front line should come naturally, setting the example for all others to follow. You should have an acute attention to detail and impeccably high standards enabling you to consistently look to raise the bar to improve business practices. You will motivate by creating a performance-centric environment that provides clear focus and rewards delivery of objectives. Above all, this role requires an individual with a passion to provide excellent service often working under pressure in a busy office environment. Those that are successful in the role are typically capable of processing relatively complex logical concepts and/or have an interest in technology, computing or electronics.
The Role:
The successful candidate will supervise and support a team of technical support advisors. The successful candidate will coach and mentor the TSA’s to ensure their knowledge & skills are to the required standard. The successful candidate will provide excellent customer service and ensure we maintain an industry recognised technical support. They must be well organised, self-motivated, punctual, and flexible in their approach to work. He or she must be able to prioritise a variable workload and know when to escalate a problem appropriately. They will be required to communicate effectively with pressurised customers at all levels, often whilst under pressure themselves. Whilst demonstrating that they are an excellent team player, the candidate will have a solid background working within a busy team.
Duties & Responsibilities:
This role will encompass a range of responsibilities including but not limited to:
- Lead, support, develop and motivate a team of Customer Service Advisors to deliver a best in-class customer experience.
- Supervise all aspects of the team’s day-to-day management and work allocation.
- Supervise all aspects of the team’s performance in line with agreed KPIs & SLAs.
- Supervise the performance management process for the team.
- Handle inbound and outbound calls ensuring first class service is always delivered.
- Act as an escalation point/go to person for team members. Resolve top-level 2nd/3rd line customer escalations by liaising with various departments to obtain resolution.
- Liaise with mobile network and broadband providers.
- Oversight of the training manuals/materials and process within your remit
- Deliver training and development for staff and new joiners.
- Take ownership of customer’s problems, perform a technical diagnosis and fix the issue either remotely or on-site (arranging external support via Field Tech engineers).
- Support colleagues with the use of in-house tools, by providing necessary training and advice.
- Carry out all tasks in an efficient, professional and courteous manner; leading by example to the Customer Service Department.
Key Skills & Qualifications Sought:
- Proficient user of MS Office, with intermediate skill level in Excel and Word.
- Experience in recruitment and performance evaluation is advantageous.
- Excellent interpersonal and communication skills both written and verbal.
- High level problem-solving abilities.
- Good leadership and organisational skills.
- Ability to work well under pressure.
- Confident, clear and professional telephone manner.
- Excellent verbal and written communication skills
- Excellent problem solving
- Strong time management and self-motivation 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.