Senior Engineering & Advisory : Cross-Platform Mobile (Capacitor / Ionic / Angular) & Next.js
Julien Kermarec
Julien Kermarec Ionic Developer Expert
Consulting Offers & Expertise

Surgical senior engineering for your critical challenges.

No theoretical overhead: clean code, battle-tested architectural patterns, and immediate delivery acceleration.

Most Requested

Lead Dev & Senior Staff Augmentation

Engineering Reinforcement & Roadmap Acceleration

Direct integration within your engineering team to unblock complex roadmaps, instill clean architecture patterns, and speed up delivery cycles.

Concrete Deliverables:
Core feature development in React / Next.js / TypeScript
Scalable and maintainable system architecture
Code reviews, engineering mentorship & best practices
CI/CD pipelines, automated testing & typing integrity
Ideal for: Scale-ups and fast-growing tech teams facing tight deadlines.
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Ionic Developer Expert

Cross-Platform Mobile Architecture

Capacitor, Ionic, Swift & Kotlin

Architecture and development of high-performance mobile apps using a unified web codebase encapsulated with custom native bridges.

Concrete Deliverables:
Capacitor 8 & Ionic enterprise architecture
Custom native plugins in Swift (iOS) and Kotlin (Android)
Offline-first replication with embedded SQLite
Apple App Store & Google Play compliance & submission
Ideal for: Teams aiming to deploy on iOS & Android without doubling dev costs.
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Technical Audit & Performance Tuning

Core Web Vitals, Memory Leaks & SecOps

In-depth code and runtime analysis to eliminate performance bottlenecks, slash page load times, and secure your production web apps.

Concrete Deliverables:
Full Core Web Vitals audit (LCP, INP, CLS)
Memory leak diagnosis and runtime profiling
Actionable remediation report & critical refactoring
Bundle size optimization & SSR caching strategy
Ideal for: Production applications suffering from sluggishness or unexplained crashes.
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Fractional CTO & Tech Advisory

Tech Governance & Architectural Roadmaps

Strategic guidance for founders and innovation directors: technical scoping, stack selection, and senior engineering hiring.

Concrete Deliverables:
Technical feasibility & Time-to-Market validation
Sustainable technology stack selection (Cloud, DB, Frameworks)
Technical candidate interviews & assessments
Oversight of external agencies & third-party vendors
Ideal for: Non-technical founders or companies between full-time CTO hires.
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Synergy & Agency Model

Freelance vs Agency: What is the right model for you?

As Founder & CTO of **Kerweb agency**, I also lead full turnkey digital projects (UX/UI design, native mobile engineering, App Store compliance, and 24/7 SLA maintenance).

Hire Me as Independent Consultant

Julien Kermarec • Advisory & Lead Dev

Ideal when you already have an engineering team or need immediate surgical senior reinforcement.

You already have a tech team and need a Senior Lead Dev
You face an urgent architecture challenge or performance audit
You want a Fractional CTO to drive technical strategy
Contact Me Directly

Entrust your project to Kerweb

Turnkey Web & Mobile Agency

Ideal if you need a multidisciplinary team (UI/UX designers, iOS & Android native engineers, QA) managed by me.

You want an end-to-end turnkey product delivered by a dedicated team
You need dedicated UI/UX designers and multi-platform developers
You require contractual SLAs and ongoing maintenance
Explore Kerweb Agency
Contact & Advisory

Let's discuss your next technical challenges.

I reply within 24 business hours. Briefly describe your challenges, current tech stack, and timeline.

Emailcontact@julienkermarec.com
LinkedInGitHub

Frequently Asked Questions

I work primarily on a Daily Rate basis (TJM) for staff augmentation and roadmap acceleration, or on fixed-scope packages for technical and performance audits. Engagements can be full-time or fractional (1 to 3 days per week).

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