This description is a summary of our understanding of the job description. Click on 'Apply' button to find out more. Role Description This role offers a unique opportunity to lead the technical pre-sales strategy for a fast-growing, developer-focused SaaS platform. The Senior Solutions Architect will act as a trusted technical advisor to prospective clients, translating complex architectural concepts into actionable solutions and driving proof-of-concept implementations. You will work closely with sales, product, and engineering teams to ensure customer success while shaping the pre-sales function from the ground up. - Serve as the primary technical advisor in pre-sales engagements, guiding prospects from concept to solution design. - Design, prototype, and implement proof-of-concept solutions that showcase platform capabilities and value. - Build and deliver compelling demos, technical presentations, and reference architectures to a variety of technical and executive stakeholders. - Collaborate with sales teams to support complex B2B deals, ensuring technical credibility and alignment with client needs. - Capture customer insights, document feature requests, and provide feedback to product and engineering teams to influence the platform roadmap. - Establish repeatable pre-sales processes, technical collateral, and evaluation workflows to accelerate deal conversion. - Maintain ongoing engagement with clients post-sale to ensure successful adoption and identify opportunities to add value. Qualifications - Proven senior experience in Pre-Sales Architecture, Sales Engineering, or similar customer-facing technical roles in B2B SaaS (developer tools, API platforms, or infrastructure products preferred). - Track record of supporting mid-market or enterprise deals $100K+ and influencing technical buyers. - Hands-on technical skills: ability to write code, build prototypes, review architectures, and troubleshoot complex systems. Familiarity with TypeScript, Node.js, Go, or similar backend technologies is a plus. - Deep understanding of modern API technologies, distributed systems, and cloud-native development (Kubernetes, Docker, CI/CD, microservices). - Exceptional communication and interpersonal skills, capable of engaging with engineers, VPs of Engineering, and CTOs with credibility and clarity. - Strong organizational skills, detail-oriented, and able to manage multiple customer engagements simultaneously. - Comfortable in fast-paced, early-stage environments with ambiguity and the ability to build processes from scratch. - Bonus: Experience with GraphQL, federated graphs, or API composition. Benefits - Competitive compensation package with discretionary PTO and flexible work arrangements. - Fully remote position with optional co-working spaces worldwide. - Choice of preferred work hardware. - Comprehensive healthcare, dental, and vision coverage for U.S. employees. - Team retreats and global collaboration opportunities. - Opportunity to shape and scale the pre-sales function as the first Solutions Architect. - Professional development and hands-on involvement with cutting-edge API and integration technologies.

Mattermost is the leading collaborative workflow platform for defense, intelligence, security, and critical infrastructure. Trusted by the U.S. Department of War and Fortune 500s, our platform runs on-premises and in private clouds, delivering secure messaging, file sharing, workflow automation, audio/screenshare, and project management—all with full data and operational control. Mattermost powers high-stakes workflows across mission planning, real-time, real-world operations, DevSecOps, incident response, and cyber defense—enabling secure collaboration from tactical edge and DDIL environments to enterprise HQ. Teams operate across web, desktop, and mobile, with embedded interoperability for Microsoft Teams, Outlook, and Microsoft 365. To learn more, visit www.mattermost.com Mattermost is seeking an experienced and driven Federal Solution Architect to serve as the technical face of Mattermost within the U.S. Defense and Intelligence Community (IC). In this role, you will provide hands-on technical sales support to federal customers and partners, architect solutions that meet the unique requirements of classified and mission-critical environments, and drive the retention and growth of Mattermost's federal revenue base. This is a high-impact, customer-facing role that sits at the intersection of technical expertise and strategic sales. You will partner closely with Federal Account Executives to advance opportunities, deepen customer relationships, and ensure Mattermost remains the platform of choice for secure collaboration across Defense and Intelligence organizations. The long-term roadmap for this position is progression to a senior-level (L6) Solution Architect. Key Responsibilities Technical Sales & Pre-Sales Engineering - Serve as the primary technical resource for Mattermost's U.S. Defense and Intelligence customers, partners, and prospects. - Lead technical discovery sessions, product demonstrations, architecture reviews, and proof-of-concept engagements tailored to federal environments. - Translate complex customer requirements — including compliance mandates (FedRAMP, IL2, IL4/5, IL6, PL3, DISA SRG, Zero Trust) — into actionable Mattermost solution architectures. - Partner with Federal Account Executives to develop and execute technical win strategies for new and expansion opportunities. Customer Success & Retention - Act as a trusted technical advisor to existing federal accounts, proactively identifying risks and opportunities to strengthen customer relationships and retention. - Support deployment planning, integration design, and technical onboarding for Defense and IC customers operating in on-premise, air-gapped, and private cloud environments. - Collaborate with Customer Success, Support, and Engineering teams to resolve technical escalations and ensure customer satisfaction. Solution Architecture & Thought Leadership - Design and document reference architectures for Mattermost deployments within DoD and IC infrastructure, including Platform One, Big Bang, and other DevSecOps frameworks and platforms. - Provide technical guidance on integrations with tools commonly used in federal environments (e.g., GitLab, Jira, ServiceNow, SIEM platforms, and CI/CD pipelines). - Represent Mattermost at federal industry events, conferences, and partner engagements. - Contribute product feedback and market intelligence from the field to inform the Mattermost product roadmap. Partner Enablement - Enable defense contractors, system integrators, and channel partners with the technical knowledge and tools needed to position, deploy, and support Mattermost solutions. - Support joint solution development and co-selling motions with key federal partners. Required Qualifications - 5+ years of experience in a Solution Architect, Sales Engineer, Pre-Sales Engineer, or comparable technical sales role — with a strong focus on U.S. Federal / Defense / Intelligence customers. - Deep understanding of federal IT environments, including on-premise, air-gapped, and classified network deployments. - Familiarity with federal compliance frameworks and security standards such as FedRAMP, DISA SRG (IL4/IL5/IL6), NIST 800-53, CMMC, and Zero Trust Architecture. - Hands-on experience with Linux-based infrastructure, Kubernetes/OpenShift (e.g., Platform One / Big Bang), and container-based deployments. - Working knowledge of networking, identity management (SAML/SSO/LDAP), database administration (PostgreSQL), and DevSecOps toolchains. - Ability to write simple integrations and automations using languages such as Python, Go, or JavaScript, and familiarity with REST APIs and webhooks. - Excellent communication and presentation skills — able to convey complex technical concepts to both technical and executive audiences. - Self-starter with the ability to operate independently in a fast-paced, remote-first environment. - Willingness to travel to customer sites, partner events, and industry conferences as needed (up to 25-40%). - U.S. citizenship required. Must be eligible to obtain and maintain a U.S. government security clearance. Preferred Qualifications - Active U.S. security clearance (Secret or above); existing TS/SCI highly desired. - Prior experience supporting DoD programs such as Platform One, or deployments within the Intelligence Community. - Experience with Mattermost or similar on-prem collaboration platforms (Wickr, Jabber, Skype for Business, Rocket.Chat, Element/Matrix). - Background in secure messaging, C2 (Command and Control) systems, or operational technology (OT) environments. - Certifications such as AWS Solutions Architect, CKA/CKAD, CISSP, Security+, or equivalent. - Experience working at or selling into defense contractors, system integrators, or federal agencies. Why Mattermost? - Mission-driven work: Your contributions directly support national security and the teams who protect it. - Growth opportunity: Clear path from this role to a senior-level (L6) Solution Architect position. - Remote-first culture: Work from anywhere in the U.S. with a globally distributed, high-trust team. - Open source at the core: Be part of a vibrant developer community shaping the future of secure collaboration. - High impact: Join at a critical inflection point for Mattermost's federal business, with direct influence on a $15M+ revenue segment. Compensation Mattermost takes a market-based approach to pay, and compensation may vary depending on your work location in the U.S. 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. Posting Range $225,000—$250,000 USD 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.

• Serve as a trusted technical advisor throughout the sales cycle • Collaborate with the sales team, prospects and existing clients to uncover challenges and design compelling solutions using the IFS Copperleaf decision analytics platform • Demonstrate the positive outcomes of our product suite to prospective clients across the Americas region • Deliver impactful product demos and executive briefings (virtual and on-site) • Design enterprise-level technology solutions • Provide technical leadership in the sales process • Engage with the industry at external events

• Serve as a technical authority for Linux-based Zero Trust enforcement infrastructure • Operate and manage systems via SSH, including secure key-based access and privilege separation • Demonstrate deep, hands-on knowledge of: • Bash scripting (required) • Process management and systemd • Filesystem layout, permissions, and logging • Strong understanding of Linux networking internals: • Routing tables and policy routing • Interface binding and traffic steering • iptables / nftables • Diagnose complex cross-platform issues where Linux enforcement points interact with Windows and macOS endpoints • Develop and maintain JavaScript-based logic executed on Appgate appliances to enable integration and automation • Build and troubleshoot REST API integrations with external systems, including: • Microsoft Graph API • ServiceNow REST APIs • Identity, ITSM, logging, NGFW, and security platforms • Operate within an API-first, Security-as-Code/Everything-as-Code architecture • Architect Zero Trust access enforcement for containerized and microservices-based workloads • Support Kubernetes environments, including: • Sidecar injection and operator-based enforcement models • Secure service exposure and service-to-service access • Integrate with Kubernetes networking (CNI), ingress, and egress controls • Enable Appgate to operate as a composable Zero Trust control within multi-vendor Federal architectures • Serve as final escalation point for the most complex Federal deployments • Lead deep technical architecture reviews with government and integrator teams • Mentor senior Solution Architects and engineers