You do not build the stack. You define the constraints that shape it.
Your engineering team makes the technical decisions. Your job is to ensure those decisions are informed by the right product, user, and business requirements. That means knowing what to own, what to influence, and what to stay aware of.
Own
Define these in every spec
•Performance requirements: load time thresholds and acceptance criteria
•Accessibility requirements: WCAG AA compliance as a definition of done
•Security acceptance criteria: input validation, encryption, injection prevention
•API integration requirements: rate limit thresholds, error handling, cost model
•SLO decision: what uptime and latency targets does the product commit to?
•Privacy and compliance requirements: GDPR, HIPAA, PII handling rules
•Feature flag requests: which launches require the ability to roll back instantly?
•Release channel: is this web-only, mobile, or both? What are the timeline implications?
Influence
Ask the right questions, shape the decision
•API type selection: does this use case justify GraphQL over REST?
•Scalability approach: are we building for predictable spikes or unpredictable growth?
•Architecture decisions: is this feature better as a new microservice or part of an existing one?
•CDN strategy for international launches
•Sync vs async design: should the user wait or see a pending state?
•Webhook vs polling: which integration pattern fits the use case?
•Message queue design: what is the retry and failure handling strategy?
You Stay Aware Of
Enough to ask the right question
•Which version of each third-party API the product depends on
•Upcoming deprecation deadlines for APIs and SDKs in use
•Current CI/CD pipeline speed: how long does a deploy take from merge to production?
•Whether the team runs a monolith or microservices and how that affects sprint scope
•Current SLI measurements: are we actually meeting the SLO we set?
•Active security vulnerabilities flagged by the engineering team