Senior Software Engineer (C#/Typescript/AWS)

lego; Billund; Hybrid; DKK 900,000 - 1,200,000; Full time

Benefits offered by this job

Family Care Leave

Life & Disability Insurance

Wellbeing Resources

Colleague Discount

Bonus Scheme

Hybrid Work Policy

Job summary

LEGO Designer Technology is seeking a Senior Software Engineer to accelerate AI-powered visualization workflows for concept designers. You will build full stack features, integrate external AI APIs, and maintain a practical balance between AI capabilities and design usability.

You will join a team that bridges creative practice with strong engineering foundations, delivering value through thoughtful product thinking and user-centered design.

Qualifications

• Built full stack applications using modern frontend and backend technologies (React/.NET).
• Integrated third-party APIs and AI/ML models into production systems.
• Designed software architecture and system solutions using established engineering practices.
• Delivered results within cross-functional product teams with designers and product managers.
• Led complex initiatives from ambiguity through to a working product.
• Partnered with diverse technical and non-technical stakeholders to communicate technical decisions.

Responsibilities

• AI-powered tools for concept designers to move more quickly from idea to visualization.
• Solutions that connect rapidly evolving AI capabilities with real creative workflows.
• A strong technical foundation that supports future development without sacrificing engineering quality.
• An MVP that can be tested and refined through direct feedback from concept designers.
• Products that become a trusted part of designers' day-to-day process.

Skills

Full stack development

API integration

Software architecture

Cross-functional collaboration

Project leadership

Stakeholder communication

Tools

React

.NET

OpenAI API

Anthropic API

Job description

About the role

As our Senior Software Engineer (C#/Typescript/AWS), you'll focus on accelerating how LEGO® designers work by embedding AI into their visualization workflow. You'll design and build tools that are genuinely useful, balancing the possibilities of AI image generation with the practical needs of the people using them. This is an opportunity to bridge creative and technical worlds, helping shape products that support designers in their everyday work while building a strong engineering foundation for the future.

Required Qualifications

• Built full stack applications using modern frontend and backend technologies, ideally React and .NET (or similar)
• Integrated third-party APIs and services, including AI or machine learning models, into production systems
• Designed software architecture and system solutions using established engineering practices
• Delivered results within cross-functional product teams alongside designers and product managers
• Led complex initiatives from ambiguity through to a working product
• Partnered with diverse technical and non-technical stakeholders to communicate technical decisions and trade-offs

Preferred Qualifications

• Applied LLM APIs such as OpenAI, Anthropic, or similar within user-facing products
• Created tooling or internal platforms used by non-technical audiences
• Shipped maintainable products with a focus on practical outcomes and long-term sustainability
• Applied UX thinking when designing tools and user experiences

What you'll build

• AI-powered tools that help concept designers move more quickly from idea to visualization
• Solutions that connect rapidly evolving AI capabilities with real creative workflows
• A strong technical foundation that supports future development without sacrificing engineering quality
• An MVP that can be tested and refined through direct feedback from concept designers
• Products that become a trusted part of designers' day-to-day process

If you've worked in a role where you shipped full stack features to production, integrated external APIs, and helped turn unclear ideas into working products, you'll feel at home here. What matters most is your ability to combine strong engineering fundamentals with practical product thinking and a clear focus on user needs.

Life on the team

You'll join the LEGO Designer Technology team, where engineering and creative practice come together to build AI-powered tools for concept designers. We work closely with designers and product managers, creating a short feedback loop between what we build and how it's used. Our team keeps things simple, with daily stand-ups and regular demo sessions to stay connected. We value people who take ownership, work independently on complex problems, communicate clearly, and bring ideas forward while supporting one another. You'll gain hands-on experience with applied AI in an environment that values craft, thoughtful decision-making, and learning together.

What success looks like

Success means becoming a trusted partner to the design community while helping translate creative needs into practical software solutions. You'll master the challenge of connecting AI technology with real-world design workflows and help shape the direction of products in an exploratory environment. Over the next 12 to 18 months, you'll work closely with engineers, a product manager, and designers to influence what gets built and where the team's work goes next.

#LI-MF2

What's in it for you?

• Family Care Leave - We offer enhanced paid leave options for those important times.
• Insurances - All colleagues are covered by our life and disability insurance which provides protection and peace of mind.
• Wellbeing - We want our people to feel well and thrive. We offer resources and benefits to nurture physical and mental wellbeing along with opportunities to build community and inspire creativity.
• Colleague Discount - We know you'll love to build, so from day 1 you will qualify for our generous colleague discount.
• Bonus - We do our best work to succeed together. When goals are reached and if eligible, you'll be rewarded through our bonus scheme.
• Workplace - When you join the team you'll be assigned a primary workplace location i.e. one of our Offices, stores or factories. Our hybrid work policy means an average of 3 days per week in the office. The hiring team will discuss the policy and role eligibility with you during the recruitment process.

Children are our role models. Their curiosity, creativity and imagination inspire everything we do. We