Declan Weir

Go-to-Market Systems and Engineering Leader (he/him)

Location n/a
Notionex-Affirmex-Stripe

Builder-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.

Career TimelineNOW → PAST

GTM Index

  1. NOTIONJOB
    1. Head of GTM Systems
      8M
  2. AFFIRMJOB
    1. Senior Mgr, Business Systems
      5M
  3. STRIPEJOB
    1. Eng Mgr, GTM Systems
      4Y 4M
  4. LINKEDINJOB
    1. Eng Mgr
      3Y 2M
    2. Mgr, Sales Systems Eng
      1Y 3M
    3. Salesforce.com Administrat…
      4Y 5M
  5. CRITICAL PATHJOB
    1. Java & GTM Developer
      3Y 4M
    2. Application Support Analyst
      2Y 5M
  6. SYMANTECJOB
    1. Localization Quality Assur…
      5M

Time in market 22Y 4MOpen 1Closed 8Stints 9

gtmindex.io/p/declanweir

  1. Job: Affirm — Senior Manager, Business Systems · 2025-07 – 2025-12
  2. Job: Stripe — Engineering Manager, GTM Systems · 2021-03 – 2025-07
  3. Job: LinkedIn — Manager, Sales Systems Engineering · 2016-09 – 2017-12
  4. Job: Critical Path — Application Support Analyst · 2006-06 – 2008-11
  5. Job: Notion — Head of GTM Systems · 2025-12 – present
  6. Job: LinkedIn — Salesforce.com Administrator/Force.com Developer · 2012-04 – 2016-09
  7. Job: Symantec — Localization Quality Assurance Engineer · 2004-04 – 2004-09
  8. Job: LinkedIn — Engineering Manager · 2017-12 – 2021-02
  9. Job: Critical Path — Java & GTM Developer · 2008-12 – 2012-04

Skills

SalesforceStrategic CommunicationsStrategic PartnershipsSOQLSarbanes-Oxley ActRegulatory ComplianceTeam ManagementCloud ApplicationsSalesforce.com DevelopmentEngineeringVendor ManagementApplications DeliveryTechnical Solution DesignEnterprise Solution DesignBusiness SystemsBusiness RequirementsVendor RelationsExecutive VisibilityBuild Strong RelationshipsStaffing PlansGeneral Data Protection Regulation (GDPR)

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