Declan Weir
Go-to-Market Systems and Engineering Leader (he/him)
Notion
ex-StripeBuilder-first, enterprise systems leader with two decades of experience designing and deploying AI-integrated technology backbones across GTM, Operations, and Legal functions.
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Proven track record replacing manual workflows with LLM-powered agentic systems, architecting secure multi-layer AI infrastructure, and connecting disparate SaaS platforms into coherent, scalable operational Deep practitioner of internal AI agent deployment — including designing Know-Act-Learn agentic architectures, multi-layer AI systems (reasoning, data, and UI layers), and cross-functional automation frameworks grounded in Jobs-to-be-Done principles. Consistently eliminates operational fragmentation by making workflows programmable and keeping humans at judgment moments rather than in the Experienced C-suite technology partner who translates complex architectural decisions into business outcomes, drives operational maturity through disciplined data governance and compliance frameworks (SOX, GDPR), and builds high-impact teams with a culture of speed, curiosity, and user-centricity. Experienced in leading build vs buy Close to a decade of experience building/leading engineering teams across the Americas, Europe & Asia. Have adopted and led established teams as well as designing new organizational models from scratch and hiring globally to fulfil the vision. Adept at combining Player-Coach leadership with strategic, visionary thinking. Strong understanding of enterprise-level security controls, with experience ensuring compliance with data protection standards and regulations. Experienced in threat model creation and have designed/redesigned processes and systems to meet GDPR and equivalent compliance Designed and built IT Governance Controls (ITGC), implemented operating models for observability and effectiveness testing for these controls. Well versed in working in SOX-compliant environments as well as bringing rigor, governance and observability to pre-compliant environments to achieve compliance. Led teams successfully through difficult change and have provided clarity when teams focus need to evolve to match the needs of hyper-growth or changing economic conditions. Led multiple team/system migrations after mergers and acquisitions. Establish new team norms and team identities to help absorb the impact on teams whilst improving execution through culture.
GTM Index
- NOTIONJOB
- Head of GTM Systems10M
Head of GTM Systems
Notion
Leading the Go-to-Market Systems functions (Marketing, Sales, Customer Success, CX, Professional Services, Partner) to build a scalable revenue engine to propel the growth of Notion globally. - Rebuilding traditional distributed SaaS systems into AI-forward, agentic, loop-driven architectures. - Transforming department culture to product-focused, high-agency, problem-solving internal systems team with a bias towards action. -Building cross-functional relationships and defining strategies to help partners achieve new levels of efficiency through acquisition of AI forward tooling or custom development (build vs buy)
- AFFIRMJOB
- Senior Mgr, Business Systems5M
Senior Manager, Business Systems
Affirm
- STRIPEJOB
- Eng Mgr, GTM Systems4Y 4M
Engineering Manager, GTM Systems
Stripe
Led GTM Systems (Marketing, Sales and Legal) teams Transformed the culture and capabilities of the team to support hypergrowth and rapid organizational change. Led cross-functional transformational teams to reimagine and rebuild contracting systems with Ironclad CLM paired with bespoke engineering solutions and AI-optimization .
- LINKEDINJOB
- Eng Mgr3Y 2M
Engineering Manager
LinkedIn
- Mgr, Sales Systems Eng1Y 3M
Manager, Sales Systems Engineering
LinkedIn
CRM / Salesforce.com / SFDC Manager responsible for a great team of SFDC Administrators.
- Salesforce.com Administrat…4Y 5M
Salesforce.com Administrator/Force.com Developer
LinkedIn
Certified administrator and developer of Salesforce.com
- CRITICAL PATHJOB
- Java & GTM Developer3Y 4M
Java & GTM Developer
Critical Path
Java development and system administration of Salesforce.com CRM (Certified SFDC Administrator)
- Application Support Analyst2Y 5M
Application Support Analyst
Critical Path
- SYMANTECJOB
- Localization Quality Assur…5M
Localization Quality Assurance Engineer
Symantec
Six-month internship as a SQA Engineer. Duties included creating and executing test scripts and processes against translated versions of the Symantec/Norton suite of software.
- Job: Notion — Head of GTM Systems (Head of GTM Engineering) · 2025-12 – present · 8 mo — Leading the Go-to-Market Systems functions (Marketing, Sales, Customer Success, CX, Professional Services, Partner) to build a scalable revenue engine to propel the growth of Notion globally. - Rebuilding traditional distributed SaaS systems into AI-forward, agentic, loop-driven architectures. - Transforming department culture to product-focused, high-agency, problem-solving internal systems team with a bias towards action. -Building cross-functional relationships and defining strategies to help partners achieve new levels of efficiency through acquisition of AI forward tooling or custom development (build vs buy)
- Job: Affirm — Senior Manager, Business Systems · 2025-07 – 2025-12 · 5 mo
- Job: Stripe — Engineering Manager, GTM Systems · 2021-03 – 2025-07 · 4y 4mo — Led GTM Systems (Marketing, Sales and Legal) teams Transformed the culture and capabilities of the team to support hypergrowth and rapid organizational change. Led cross-functional transformational teams to reimagine and rebuild contracting systems with Ironclad CLM paired with bespoke engineering solutions and AI-optimization .
- Job: LinkedIn — Engineering Manager · 2017-12 – 2021-02 · 3y 2mo
- Job: LinkedIn — Manager, Sales Systems Engineering · 2016-09 – 2017-12 · 1y 3mo — CRM / Salesforce.com / SFDC Manager responsible for a great team of SFDC Administrators.
- Job: LinkedIn — Salesforce.com Administrator/Force.com Developer · 2012-04 – 2016-09 · 4y 5mo — Certified administrator and developer of Salesforce.com
- Job: Critical Path — Java & GTM Developer · 2008-12 – 2012-04 · 3y 4mo — Java development and system administration of Salesforce.com CRM (Certified SFDC Administrator)
- Job: Critical Path — Application Support Analyst · 2006-06 – 2008-11 · 2y 5mo
- Job: Symantec — Localization Quality Assurance Engineer · 2004-04 – 2004-09 · 5 mo — Six-month internship as a SQA Engineer. Duties included creating and executing test scripts and processes against translated versions of the Symantec/Norton suite of software.
- School: Dublin City University — M.Sc., Business Management
- School: Dublin City University — B.Sc., Computer Applications (Software Engineering)
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