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Senior Web & Native Mobile Engineering

Build and scale better web and mobile products.

We help SaaS teams ship native iOS and Android apps, improve frontend performance, and make sound architecture decisions—with senior technical ownership from the Netherlands.

Swift + Kotlin

Native iOS & Android apps

€1,950

Fixed-price performance audit

React + Angular

Plus Next.js web frontends

NL-based

Amsterdam time, clients worldwide

Selected experience

Products we have helped improve

ING
Albert Heijn
ANWB
Bosch Thermotechniek
TNT Express

Past engagements. Project details available on request, subject to confidentiality.

Capabilities & Services

What we can help you ship

Choose a focused engagement to solve a technical bottleneck, extend your product to mobile, or add senior engineering guidance to your team.

Native iOS & Android Product Development

Extend an existing SaaS product to mobile or improve an app already in the stores. We build with Swift and Kotlin and integrate with your existing APIs and services.

  • Shared API & Authentication state
  • Face ID / Touch ID biometrics
  • Apple & Google Store Publishing

Frontend Performance & Architecture Audits

Find the causes of slow screens, oversized bundles, rendering bottlenecks and maintainability issues. Get prioritized findings and practical next steps for your team.

  • Next.js SSR & React hydration profiling
  • Native memory leak & CPU checks
  • Actionable fix list for your team

Design Systems & UI Consistency

Create reusable components and design tokens that make web and native interfaces more consistent, maintainable and efficient to evolve.

  • Unified token pipelines
  • SwiftUI & Jetpack Compose parity
  • Storybook component catalog

AI Integration for Existing Products

Add AI-assisted workflows, document extraction, search or product features where they solve a clear user problem—with attention to privacy, reliability and operating cost.

  • Apple CoreML & Android TFLite
  • OpenAI & Claude API Integration
  • Client-side smart OCR & search

Fractional Frontend & Mobile Engineering Lead

Add senior technical direction without hiring a full-time architect. Get architecture reviews, code-review guidance, delivery planning and support for React, Angular and native mobile teams.

  • Fast-track App Store & Play Store CI/CD
  • React/Next/Angular Code Review Standards
  • Weekly Technical Strategy & Mentorship
  • Scalable State & Clean Architecture

Transparent Investment

Clear starting points for specialist engineering

Starting prices help you assess fit. Final scope, deliverables and timelines are confirmed after a short technical discovery.

Prices are indicative starting points, excluding VAT where applicable. Larger or more complex projects are scoped separately.

Fixed DiagnosticTypically 3–5 Business Days

Web & Mobile Performance Audit

A focused technical review of an agreed web or mobile scope, with prioritized findings and recommendations.

€1,950 / one-time

  • Review of agreed performance and architecture risks
  • Prioritized findings with clear impact and recommended actions
  • Practical remediation guidance for your development team
  • 60-minute technical review call with dev leadership
Book Performance Audit
Scoped BuildTimeline after discovery

Web-to-Native App Expansion

Extend an existing web product into native iOS and Android apps. Final cost and timeline depend on product complexity and agreed features.

Starting from€6,500

  • Native iOS and/or Android implementation to an agreed scope
  • API integration and agreed native capabilities
  • Secure authentication where required and technically appropriate
  • Release preparation and store-submission support as agreed
Inquire Conversion Build

Interactive Scope Calculator

Project scope estimator

Choose a service and complexity level for an indicative starting estimate. This is not a quote or a guaranteed delivery timeline.

1. Target Platforms & Frameworks
Startup / Small CodebaseScaling SaaS / MediumLarge Enterprise Platform

Modern Modern Technology Stack

Technology chosen for the product

We work with the stack that fits your existing product, team and delivery constraints.

React JS

Component Architecture

Next.js

SSR, App Router & API

Angular 18+

Signals & Hydration

iOS / Swift

SwiftUI & Combine

Android / Kotlin

Jetpack Compose

Fastlane CI/CD

App Store Automation

About

Who you will be working with

Your CTO & lead engineer

Senior Engineer. Founder. Product Builder.

Sem Shafiq is the founder and CTO of Elusive Studio, based in Almere, the Netherlands. He is a senior web and native mobile engineer who helps teams turn complex product challenges into dependable software.

From React, Next.js, and Angular to native iOS and Android, Sem brings deep, hands-on expertise across the product stack—from architecture and performance through to delivery. He pairs that technical range with clear engineering leadership, helping teams make sound decisions and ship products built to last. He also builds and maintains his own products, including InvoicePoint.

LinkedIn profile
Extended team

Extra capacity when needed

For larger builds, I work with a small network of vetted engineers based in Pakistan. They work under the same NDAs, code-review standards and delivery process as I do.

  • You always know who works on your project
  • Every pull request is reviewed by me
  • One contract, one accountable party
Built in-house

InvoicePoint: Professional invoicing, made simple

Designed and built by Elusive Studio, InvoicePoint helps freelancers and small businesses create, manage, and send professional invoices from wherever they work. It turns everyday billing into a clear, organized workflow.

  • Create branded invoices with customizable details
  • Manage invoices and keep track of payment status
  • Access invoicing workflows across devices
Visit invoicepoint.app

How it works

From first message to delivery

  1. 1

    Brief

    Send your enquiry or book an intro call to discuss goals and constraints.

  2. 2

    Scope

    You receive a written proposal with deliverables, timeline and price or capacity.

  3. 3

    Delivery

    Regular progress updates and a shared channel so nothing is a surprise.

  4. 4

    Handover

    Documentation, a walkthrough with your team and agreed follow-up support.

FAQ

Common questions

Do you sign NDAs?

Yes. Proprietary code and business information are treated as confidential, and an NDA can be signed before we share details.

Who owns the code?

Ownership and licensing terms are agreed in the contract before work starts.

Are prices including VAT?

Prices exclude VAT. VAT is added where applicable, depending on your company and country.

When can you start?

Start dates depend on current availability. Mention your ideal timeline in the enquiry and you will get an honest answer.

Direct Engineering Inquiry

Start Your Engineering Engagement

Have a technical bottleneck or project proposal? Send a direct brief and receive a response within 24 hours.

NDAs strictly respected for all proprietary code.Based in Almere, Netherlands (CET)