Enterprise Architect, Business Transformation & Portfolio
HI3G Access AB · Stockholm · Tills vidare · Deadline 2026-11-01
HI3G Access AB (Tre) is seeking an **Enterprise Architect, Business Transformation & Portfolio** to support strategic modernization and growth across Sweden and Denmark. Operating as an advisory partner rather than an approval gate, the role focuses on connecting business strategy, technology direction, and investment choices. Responsibilities include defining and evolving the enterprise target architecture, establishing strategic roadmaps, identifying cross-domain dependencies, and guiding portfolio-level decisions on modernization, sourcing, standardization, and legacy retirement. Working within a federated architecture model, the architect collaborates closely with business and technology leaders, domain and technology architects, and engineering teams across both countries. Candidates must have extensive experience as an **Enterprise Architect or in a comparable senior architecture role**, with a proven background spanning business strategy, technology strategy, and complex transformation portfolios. Demonstrated expertise in developing enterprise target states, transition architectures, and application portfolio management—alongside strong stakeholder influence and fluent written and verbal **English**—is required. Desirable assets include experience within telecom, digital service, or subscription sectors, familiarity with TM Forum frameworks such as ODA, cross-country architecture coordination, knowledge of BSS/OSS transformation, and a TOGAF or equivalent architecture qualification.
Shape the future technology landscape at TreTre is strengthening its architecture function to support major transformation initiatives across Sweden and Denmark.
We are modernising our technology landscape, investing in cloud, AI, digital capabilities and long-term architecture to support future growth.
As part of this journey, we're looking for an experienced Enterprise Architect, Business Transformation & Portfolio who wants to help shape the future of one of the Nordic region's leading telecom operators.
You will connect business strategy, technology direction and investment decisions, helping Tre make better choices about what to standardise, modernise, consolidate, buy, build or retire.
This is not an architecture approval role. Your purpose is to create clarity, make complex choices visible and help the organisation make better decisions earlier.
About our architecture communityAt Tre, architecture is evolving into a stronger advisory capability with greater influence across business and technology.
Our architects help create clarity, guide strategic decisions and connect long-term direction with practical execution. As our Enterprise Architect, you will work closely with Domain Architects, Technology Architects, engineering teams and senior leaders to shape the future technology landscape across Sweden and Denmark.
This is an opportunity to join a growing architecture community with increasing impact on technology strategy, transformation initiatives and business outcomes.
About the roleAs our Enterprise Architect, Business Transformation & Portfolio, you will help define Tre's long-term technology direction and ensure that strategic business goals translate into sustainable architecture decisions.
You will work across business domains, technology platforms and transformation initiatives, connecting business capabilities, systems and investments into a coherent enterprise landscape.
Working closely with business and technology leaders, Domain Architects, Technology Architects and portfolio stakeholders, you will help shape target architectures, strategic roadmaps and key investment decisions while establishing Tre's Enterprise Architecture capability.
Your focus extends beyond individual programmes. You will help drive portfolio coherence, simplification and long-term technology direction across Sweden and Denmark.
What you'll do
In this role, you will:
- Define and evolve the enterprise target architecture across Sweden and Denmark.
- Connect business capabilities, strategic objectives, applications, platforms and investment decisions.
- Drive portfolio-level decisions regarding standardisation, modernisation, sourcing and legacy retirement.
- Identify cross-domain dependencies, risks and decisions that require enterprise-wide alignment.
- Establish architecture direction for major transformation initiatives.
- Support leadership with recommendations and decision material for strategic business and technology investments.
- Develop enterprise roadmaps, transition plans, architecture principles and decision records.
You can look forward to:
- A central role in shaping the future technology landscape of a leading Nordic telecom operator.
- The opportunity to influence strategic investment, platform and transformation decisions.
- Working across Sweden and Denmark within a federated architecture model.
- Close collaboration with business leaders, architects and engineering teams.
- Major transformation initiatives involving customer experience, telecom platforms, cloud, AI and modern software delivery.
- Joining a growing architecture function with increasing influence on strategic business and technology decisions.
Mats describes himself as a leader:"I believe great architects create clarity rather than complexity. We provide advisory and 'marriage counseling' for IT and Business. I value curiosity, accountability and collaboration, and I encourage people to challenge established ways of working when there is a better path forward. My role as a leader is to provide direction, remove obstacles and create an environment where people can have real impact and grow in their area of expertise."
We believe you have
Must-have:
- Experience as an Enterprise Architect or in a comparable senior architecture role.
- Experience working across business strategy, technology strategy and complex transformation portfolios.
- Experience developing enterprise target states, roadmaps and transition architectures.
- Experience with application portfolio management, sourcing decisions and legacy-modernisation strategies.
- The ability to analyse complex dependencies and turn them into clear decision options.
- Experience influencing senior stakeholders without relying on formal line authority.
- Strong written and verbal communication skills in English.
Nice-to-have:
- Telecom, digital-service-provider or subscription-business experience.
- Experience with TM Forum frameworks, including ODA.
- Experience coordinating architecture across multiple countries.
- Knowledge of BSS/OSS transformation, cloud platforms or data architecture.
- TOGAF or another relevant architecture qualification.
We're looking for someone who:
- Thinks strategically while remaining pragmatic.
- Creates clarity in complex environments.
- Builds strong relationships across business and technology.
- Is comfortable challenging established assumptions in a constructive way.
- Communicates complex topics in a way that enables decisions.
- Is curious, proactive and driven by continuous improvement.
You value collaboration, accountability and evidence over architecture for architecture's sake. You help organisations make better decisions rather than creating unnecessary complexity.