Technical Lead - Core Applications - London or Madrid

Employment Type

Permanent Full Time Function

Digital The Role

The Technical Lead, Core Applications will join the Engineering and Architecture team at an exciting point in Sonnedix’s technology journey. You will provide technical leadership for the core internal applications that are transforming how the business manages its assets, projects, contracts, development pipeline, trading and PPA settlement. SAi One is Sonnedix’s single system of record for asset, project, contract and pipeline data across all Sonnedix countries, supporting asset management, development and construction delivery. SAi Markets supports the company’s trading and PPA settlement activities. Together, these platforms are replacing a fragmented mix of spreadsheets, trackers and country-specific tools, creating a more consistent, connected and scalable technology foundation for the business. You will play a key role in shaping the technical direction of these platforms, ensuring they are secure, scalable, resilient and capable of supporting Sonnedix as it continues to grow.

You will take technical ownership of a significant part of the application estate, typically one of the core applications or a major shared component. This is a hands-on leadership role where you will have real influence over how the platforms are built, evolved and operated. You will define and drive the technical roadmap, make architecture and technology decisions, and work closely with engineers to deliver new features, improvements and fixes. You will set high standards across architecture, automation, testing, monitoring and operational support, while identifying technical risks and opportunities to improve performance, maintainability and resilience. As more of the business moves onto these platforms, your remit and influence will grow with it.

A key focus will be developing sustainable internal capability and creating an engineering environment where teams can move quickly without compromising the reliability of business-critical systems. You will work collaboratively with Engineering, Asset Management, Development, Construction, Finance and Trading teams, translating complex business needs into practical, robust technical solutions. You will also play an important role in mentoring engineers, sharing knowledge and helping shape engineering standards across the wider application estate.

Desirable skills:

• A degree in Computer Science, Engineering or a related field, or equivalent professional experience
• Experience providing technical leadership for complex, business-critical platforms or software solutions.
• Experience designing secure, scalable cloud-based solutions and modern software architectures.
• Strong understanding of CI/CD, Infrastructure as Code, automated testing and observability.
• Experience designing APIs, complex data flows and integrations across enterprise environments.
• Strong communication and collaboration skills, with the ability to work effectively with both technical and non-technical colleagues and connect business needs with practical technology solutions.
• Experience in the energy sector, or with asset management, trading or PPA settlement platforms, would be beneficial, but is not essential.

We use English as our business language, please submit your CV in English.

We deploy AI across the business, from generation and trading decisions to the everyday workflows of every team. We invest in our people’s digital fluency so everyone works alongside these tools with confidence.

Studies show that many qualified candidates hesitate to apply unless they meet every requirement. If this role excites you, but you don’t meet every single qualification, we still encourage you to apply. We value diverse skills, perspectives, and experiences that contribute to a stronger team. In line with EU pay transparency requirements, salary ranges will be shared with candidates in the EU before progressing to the next stage of the recruitment process, and always before interview. This range reflects the typical starting pay for new hires. Pay above this level may apply in specific circumstances based on experience, skills, or role scope.

About Us

Sonnedix is a global renewable energy company delivering 100% clean electricity through a diversified portfolio of solar, wind, and storage assets.

With almost two decades of sustainable growth, we are committed to Powering a Bright Future, as we continue acquiring, developing, building, and operating renewable energy projects for the long-term, delivering innovative, tailored, and fully renewable energy solutions to our customers.

We help you thrive at work and beyond: A people-first company, committed to offer flexibility, a family-first approach, wellbeing and training support, and – above all – team connection and community!

We are tech-fluent by design: Technology isn’t a support function, it’s how we run. We deploy AI across the business and future-proof your career by investing in our people’s digital fluency.

We have nearly two decades of sustainable growth: Our successful track-record of nearly 2 decades is testament to our strong sustainable growth focus. We are a reliable partner and employer, for the long term!

We are truly diverse and inclusive: A culture of listening to each other, educating ourselves, and implementing changes to improve and ensure every member of our One Team feels and knows they belong.

Hear from some of our team about Sonnedix: https://www.sonnedix.com/careers

What we offer:

• One company, many careers - as the company grows, we offer the opportunity for you to develop your career with us
• An inclusive, international working culture with a diverse team of friendly professionals from across the world
• A commitment to flexibility – hybrid working, generous annual leave allocation with an additional four weeks of discretionary unpaid leave
• A family first company - generous paid parental leave and support for carers
• The ability to ‘work from elsewhere’, for up to six weeks in a year
• Summer working hours
• Financial, Social, Mental & Physical wellbeing support
• The Sonnedix Academy – a range of training and development opportunities including professional development, management and leadership programs, technical training, essential skills, DEI, mentorship and much more
• Dedicated learning paths, tools, and resources to help every colleague confidently use AI and digital tools in their work
• Fantastic office environments
• Social events, team building opportunities and One Team Network groups, which are employee-led groups, based on shared identities, interests, backgrounds and life experiences

and many more local benefits! Applications Close Date

2026-08-28 00:00:00