Senior Solution Architect, EMEA & APAC (Defense & Public Sector)

At Mattermost, we build the #1 collaborative workflow solution for defense, intelligence, security, and critical infrastructure organizations. Trusted by governments, financial institutions, and technology companies, our platform enables secure, efficient operations for the world’s most critical teams.

We’re dedicated to empowering organizations to operate with confidence, reducing risks, and accelerating productivity. Guided by our core values of Customer Obsession, Earn Trust, Self Awareness, Ownership and High Impact, we collaborate closely with our customers to deliver solutions that meet complex needs and drive success.

To learn more, visit www.mattermost.com

Mattermost is seeking a Senior Solution Architect to join our EMEA and APAC GTM team. In this role, you will take end-to-end technical ownership of Mattermost-based solutions for customers and partners in Germany and selected Northern European markets, including the Nordics, Baltics, and Netherlands.

This role focuses on defense, intelligence, public sector, and NATO-related environments. You will combine architectural leadership, stakeholder engagement, hands-on technical delivery, and ownership of key technology and system integrator partnerships to establish secure, self-hosted collaboration platforms in highly mission-critical environments.

Responsibilities

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Lead technical ownership of secure collaboration solutions built on Mattermost for defense, public sector, critical infrastructure, and NATO-related organizations

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Run requirements and architecture workshops with IT, security, architecture teams, business units, and executive stakeholders

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Translate operational goals, threat models, and regulatory constraints into scalable, secure solution architectures

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Design end-to-end Mattermost architectures in high-security environments (on-premises and sovereign cloud), including:

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Network integration

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Identity and access management (SSO, SAML, OIDC, LDAP)

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Logging and monitoring integrations

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Data protection and security controls

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Guide customers through the full technical lifecycle: discovery, concept design, proof of concept, pilot, hardening, production rollout, and scale

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Develop and deliver compelling technical demos, workshops, and use-case presentations for mission-critical scenarios such as situational awareness, incident response, and operational coordination

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Own technical responses for RFI/RFP submissions, security questionnaires, and architecture reviews in partnership with Sales, Product, Security, Legal, and Compliance

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Represent Mattermost in engagements with NATO stakeholders, defense contractors, and government authorities

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Ensure solution designs align with applicable security, regulatory, and classified information handling requirements (including German and NATO frameworks)

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Build and grow technical relationships with hyperscalers, technology partners, and system integrators

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Drive partner enablement through training, reference architectures, reusable assets, and joint solution development

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Provide structured feedback to Product and Engineering on roadmap priorities, feature gaps, and competitive insights

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Represent Mattermost at relevant industry and community event

Qualifications

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10+ years of experience in a customer-facing technical role (Solution Architect, Pre-Sales Engineer, Sales Engineer, or Systems Engineer) within B2B software or cybersecurity

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Experience supporting public sector, defense, or critical infrastructure environments preferred

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Strong knowledge of enterprise infrastructure, including Linux, networking, reverse proxies, TLS, APIs, and modern web technologies

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Experience integrating applications into enterprise security stacks and identity environments (SSO, SAML, OIDC, LDAP, directory services)

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Demonstrated experience designing and delivering mission-critical solutions with high security, availability, and compliance requirements

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Ability to translate complex, sometimes security-sensitive requirements into clear architecture designs and implementation roadmaps

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Excellent communication skills in German (near-native) and English (business fluent), with the ability to engage both technical and executive audiences

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Experience collaborating with hyperscalers, system integrators, and technology partners on joint customer engagements

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Proficiency with structured selling methodologies such as MEDDPICC

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Willingness to travel within DACH, Benelux, Nordics, and Baltic regions

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Experience participating in formal RFI and RFP processes

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Ability to leverage generative AI tools to increase productivity and accelerate solution development

Preferred Qualifications

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Experience working with defense contractors, armed forces, ministries, or security agencies in Germany or other NATO countries

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Background with cybersecurity or defense-technology vendors (secure collaboration, endpoint security, SIEM/SOAR, IAM)

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Experience introducing and operating open-source software in regulated or security-critical environments

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Familiarity with German, EU, and NATO security and regulatory frameworks

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Proven success building technical partnerships with system integrators and channel partners

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Fluency in additional European languages

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Existing German national security clearance suitable for NATO-related and defense/public-sector work, or eligibility and willingness to obtain and maintain required clearances

What We Offer

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The opportunity to shape secure collaboration in defense, NATO-related, and public-sector environments using an open, self-hosted platform for mission-critical work

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A remote-first role based in Germany with high ownership and direct engagement with customers and partners across Northern Europe

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Competitive compensation including performance-based variable components aligned with the seniority of the role

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High visibility and direct impact on strategic customer projects, partner ecosystem development, and Mattermost’s security strategy

Mattermost takes a market-based approach to pay and pay may vary depending on your location. The successful candidate’s starting pay will be determined based on job-related skills, experience, qualifications, work location, and market conditions. These ranges may be modified in the future.

Mattermost is an EEO Employer, we are a remote-first, open-source company.

We are continually working to expand our hiring in more countries and regions, ensuring compliance with local laws and regulations, which takes time.

Mattermost values your unique perspective—we welcome all applicants. We encourage individuals from all backgrounds to apply and are committed to assessing candidates based on their skills and qualifications. We do not tolerate discrimination against staff or applicants based on race, religion, national origin, age, disability, pregnancy status, veteran status, or other personal characteristics.

If you require accommodations during the interview process, please let us know—we’re happy to assist.