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Tech Lead
Technical leadership of product squads, focused on architecture, quality and delivery velocity.
Tech Lead · Senior Software Engineer · AI Builder
Engineering high-performance digital products that scale business.
Tech Lead specializing in React, Next.js, Node.js, AWS, AI, Core Web Vitals and Technical SEO. I turn engineering decisions into measurable business impact.
Building products at real scale
Large-scale e-commerceB2B SaaSAWS CloudAI products
What I do
Product engineering driven by performance, scale and business impact.
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Senior Software Engineer
React, Next.js and Node.js applications in production, with strong performance and DX standards.
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Product Engineer
Product-driven engineer: blending engineering, UX and business metrics.
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Cloud / AWS
Serverless AWS infrastructure — Lambda, S3, CloudFront — performant and cost-efficient.
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AI Builder
LLM integration, RAG, agents and generative AI products.
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Core Web Vitals & Technical SEO
LCP, CLS and INP optimization, SEO architecture and rendering strategy.
Engineering that turns into revenue
Faster pages, better rankings, higher conversion. Performance and technical SEO treated as first-class engineering.
Performance and technical SEO are not polish — they are architectural decisions. I work at the intersection of engineering, web architecture and organic growth, delivering measurable wins in Core Web Vitals, rankings and revenue.
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Core Web Vitals
LCP, CLS and INP optimization with priority hints, fetchpriority, preconnect, edge caching and streaming.
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Lighthouse 95+
Consistent work to reach and keep production scores above 95 across performance, SEO and accessibility.
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SEO architecture
URL design, internal linking, hreflang, canonicalization, dynamic sitemaps and schema.org at scale.
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Rendering strategies
Picking between SSG, SSR, ISR and CSR — the right strategy for each product context.
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Advanced performance
Code splitting, tree shaking, partial hydration, RSC, edge rendering and aggressive bundle reduction.
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Real-world impact
50%+ LCP reductions, sustained organic traffic gains and direct conversion impact.
Representative results
−62%
Average LCP
+38%
Organic traffic
−71%
Bundle size
95+
Lighthouse Performance
Leadership & Impact
Technical leadership tied to business outcomes
Faster teams, clearer decisions, product that actually moves the needle.
Technical leadership is not ticket management — it is creating an environment where engineers do the best work of their careers, aligned with what the business actually needs.
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Leading squads
Leading product squads in a large-scale e-commerce environment (Swift / JBS), focused on performance, reliability and delivery speed.
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Technical mentoring
Continuous mentoring of mid-level and senior engineers, raising the technical bar and growing the next tech leads.
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Architecture decisions
Defining scalable architectures and continuously reviewing technical trade-offs with a product lens.
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Product alignment
Translating between engineering, product and business — engineering exists to create value, not to indulge itself.
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Engineering processes
Improving development processes, code review, CI/CD and quality — reducing lead time and increasing deploy confidence.
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Technical culture
Building a culture of excellence: performance budgets, observability, quality as contract — not aspiration.
Technology is not just about code. It is about solving real problems and generating business value.
Writing
View all articles Articles
Engineering, performance, SEO, AI, architecture and technical leadership — no fluff.
Engineering
Engineering Quality as a Contract, Not an Aspiration
Engineering Quality as a Contract, Not an Aspiration — a deep technical breakdown by Christian Possidonio on engineering, performance, SEO, AI and technical leadership for digital products.
EngineeringReducing Deploy Lead Time Without Breaking Quality
Reducing Deploy Lead Time Without Breaking Quality — a deep technical breakdown by Christian Possidonio on engineering, performance, SEO, AI and technical leadership for digital products.
EngineeringMeasuring Engineering Impact, For Real
Measuring Engineering Impact, For Real — a deep technical breakdown by Christian Possidonio on engineering, performance, SEO, AI and technical leadership for digital products.
Track record
Selected — focused on impact, performance and architecture.
Tech Lead
Swift / JBS — Large-scale e-commerce
Technical leadership of a squad on the e-commerce platform of one of the world’s largest food companies. Architecture, performance, reliability and alignment with product and business.
- Leading engineers and providing technical mentoring
- Defining scalable architectures for production-grade volume
- Driving performance, Core Web Vitals and technical SEO initiatives
- Aligning engineering, product and business to deliver real user value
- Continuous improvement of development processes and quality
Senior Software Engineer
Web and mobile products in production
A decade-plus building web and mobile applications in React, Next.js, Node.js and AWS. Architectural decisions, performance and quality as a technical contract.
- Serverless AWS architecture: Lambda + S3 + CloudFront
- Lighthouse 95+ consistently in production products
- Generative AI integrated into critical product flows
- Mobile applications in React Native / iOS / Android
Product-Oriented Engineer
Multi-client digital products
Worked as a product-driven engineer, from discovery to deploy, connecting engineering, design and business metrics.
- Performance, accessibility and SEO standards on every delivery
- Technical mentoring and best-practice standardization
- Technical decisions driven by impact, not hype