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Post your project for free and connect with skilled Android SDK Developers ready to start today. Compare bids, ratings and portfolios, and only pay when you're happy with the work.
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6.6
6.6
100%
Wollert, Australia
$20 USD per hour
Hi, I’m Jaffer – welcome to Pinnacle Digital Services! At Pinnacle Digital Services, we specialize in crafting high-quality mobile apps, websites, and desktop applications tailored to your unique needs. Our mission is simple: to deliver innovative, results-driven solutions that go beyond expectations. By combining deep technical expertise with a client-centric approach, we ensure every project is aligned with your vision and business goals. Why Choose Pinnacle Digital Services? We’re committed to excellence in every detail. From our first conversation to final delivery and ongoing support, your satisfaction is our priority. We believe in long-term partnerships built on trust, transparency, and collaboration—helping you grow while we grow with you. Our Core Services & Expertise: Web Development Technologies: PHP, MySQL, HTML5, CSS, jQuery, Node.js, Vue.js Frameworks: CodeIgniter, Laravel, CakePHP Mobile App Development Android: Java, Kotlin iOS: Swift Desktop Application Development Languages: Java/JavaFX, C/C++, C#, Python, Matlab, Let’s Build Something Great Together Whether you're launching a startup, streamlining operations, or taking your brand to the next level, we’re ready to turn your ideas into impactful digital experiences. Have questions or a project in mind? Reach out—our dedicated team is always here to help you succeed.
5.7
5.7
97%
Perth, Australia
$50 USD per hour
I provide complete IT services tailored to modern business needs, with a strong focus on Blockchain development, Artificial Intelligence, Machine Learning, Big Data, Web and Mobile app development, E-commerce platforms, and custom software solutions. I specialize in blockchain technologies including DEXs, DApps, NFTs, Web3, smart contracts, and DeFi applications across platforms like Ethereum, BSC, and Polygon. For web and mobile development, I work with Java, Python, PHP, and top JavaScript frameworks such as React.js, Node.js, Angular, and Vue.js—alongside mobile technologies like Flutter and React Native. My e-commerce solutions are built on platforms like WooCommerce, Shopify, and Magento, while my AI and machine learning services leverage tools such as TensorFlow and AWS to create intelligent, data-driven systems. If you're looking for secure blockchain integration, modern web and mobile development, scalable e-commerce systems, or custom AI-driven software, I’m here to help turn your ideas into powerful digital products.
4.7
4.7
78%
Noble Park, Australia
$20 USD per hour
The4Loop is a full-service digital solutions agency delivering end-to-end technology, design, and marketing services for startups, businesses, agencies, and growing brands. Our multidisciplinary team combines software development, UI/UX design, artificial intelligence, and digital marketing expertise to help clients turn ideas into scalable, market-ready products — all under one roof. With 8+ years of combined industry experience, we've built a reputation for delivering complete digital solutions rather than isolated services, saving our clients the hassle of managing multiple vendors. Our Services Web & Software Development Custom web apps, SaaS platforms, business websites, e-commerce stores, admin panels/dashboards, API development & integrations, payment gateway integration, backend systems, database design & programming, data processing, data analytics, web scraping, performance optimization, bug fixing, maintenance, DevOps/deployment, and scalable software architecture using React.js, Next.js, Node.js, Express.js, PHP, MongoDB, MySQL, and SQL. WordPress, WooCommerce & Shopify Custom WordPress/WooCommerce websites and Shopify stores built for performance, conversions, and easy management. Mobile App Development Cross-platform and native-style Android/iOS applications with clean UI, secure authentication, real-time features, maps, push notifications, subscriptions, and payment integrations using Flutter and Firebase. AI Development & Automation AI-powered features, chatbots, ChatGPT/OpenAI integrations, AI agents, LLM integrations, GenAI workflows, and smart internal tools that automate operations and save businesses time. UI/UX & Graphic Design Wireframes, prototypes, Figma & Adobe XD designs, landing pages, mobile app screens, conversion-focused user experiences, logo design, brand assets, brochures, packaging, book/eBook covers, and marketing visuals. Animation & Video 2D/3D animation, logo animation, character animation, whiteboard animation, motion graphics, explainer videos, and animated marketing content. Digital Marketing SEO, SEO content writing, sales funnels, Google Ads, Meta/Facebook marketing, Pixel & campaign tracking, landing page & conversion optimization, and AdSense setup. API & Third-Party Integrations PayPal, Google Maps, Google/Facebook/Instagram/Twitter APIs, Firebase, Salesforce/Pardot, and other custom platform integrations. Why Choose Us End-to-end solutions with no need to hire multiple vendors. Modern, scalable tech stack. AI-driven approach to solving business challenges. Design-first mindset with conversion-focused results. Transparent communication and reliable, on-time delivery. Industries We Serve Startups, SaaS Companies, E-commerce Brands, Agencies, Healthcare, Real Estate, Education, Retail, and Corporate Enterprises.
6.4
6.4
100%
PERTH, Australia
$45 USD per hour
For over two decades, I’ve been engineering software that performs, scales, and feels effortless. My expertise spans mobile app development, reverse engineering, low-level C/C++, AI, full-stack development, SaaS, and cloud systems. I specialise in understanding and building software from the lowest level to the complete product — from mobile applications and native system components to APIs, databases, AI services, and cloud infrastructure. 📱 Mobile App Development I build modern, reliable mobile applications with a strong focus on performance, usability, architecture, API integration, authentication, databases, background processing, and deployment. I also work close to the native layer with C/C++, native libraries, DLLs/shared libraries, system APIs, memory management, and performance optimisation. 🔬 Reverse Engineering & Low-Level Programming Reverse engineering and low-level development are among my strongest areas. I work with C/C++, Windows internals, DLLs, EXEs, memory layouts, pointers, calling conventions, assembly, debugging, binary analysis, API interception, IPC, RPC, shared memory, and native system components. I can analyse existing software, trace execution paths, reconstruct data structures and communication mechanisms, understand undocumented interfaces, and develop compatible integrations or replacements where appropriate. 💻 Full-Stack, SaaS & Cloud I build scalable Python and JavaScript applications, REST APIs, microservices, SaaS platforms, and cloud systems using technologies such as AWS, FastAPI, Flask, Node.js, React, SQL, and NoSQL databases. 🌐 Web Scraping & Automation I develop web scraping, data extraction, automation, and data-processing systems for structured and unstructured data, integrating results into APIs, databases, dashboards, and AI pipelines. 🤖 AI & Intelligent Applications I’ve worked hands-on with practical AI applications including chatbots, trading bots, analytics, OCR, object detection, computer vision, NLP, talking avatars, and image generation. My focus is not just on building models, but on engineering AI systems that integrate into real products and deliver measurable value. ⚙️ Engineering Approach Understand the system → design the architecture → build cleanly → optimise deeply → automate wherever possible. Whether you need a mobile application, native C/C++ component, reverse-engineering solution, low-level integration, web scraper, AI application, Python service, JavaScript front end, AWS architecture, or complete SaaS platform, I bring both high-level product engineering and deep low-level technical expertise. I’m particularly comfortable with challenging projects involving existing binaries, native libraries, undocumented interfaces, legacy systems, performance-critical components, and complex technical constraints. My goal is simple: clean engineering, deep technical understanding, and software that works remarkably well in the real world. Cheers, Vishal Maharaj
An Android SDK developer is a software engineer who builds, maintains, and integrates Software Development Kits using the official Android SDK to extend native Android functionality inside mobile applications. They write Java and Kotlin code that interfaces directly with Android system APIs, hardware sensors, and third-party services to deliver reusable libraries and modules. Hiring an Android SDK developer gives you the deep platform expertise needed to ship stable, performant features that work across the fragmented Android ecosystem.
An Android SDK developer produces more than just app screens. They engineer the underlying components that power core functionality, often as standalone libraries (.aar or .jar artifacts) that other developers consume. The work sits at the intersection of mobile engineering, API design, and platform integration.
Typical deliverables include custom SDKs for analytics, payments, authentication, advertising, push notifications, mapping, and IoT device communication. These engineers also build wrapper SDKs that expose native Android features to cross-platform frameworks, integrate third-party SDKs into existing apps, and resolve compatibility issues across Android versions and OEM variants.
Commercially, a well-built SDK reduces engineering overhead for your customers, accelerates partner integrations, and protects revenue streams that depend on reliable mobile distribution. Poorly written SDKs cause crashes, battery drain, and ANRs that damage host applications, so the quality of this hire directly affects adoption.
An experienced Android SDK developer handles the full lifecycle of mobile library engineering, from architecture decisions through versioning and distribution.
The Android SDK developer toolkit is well-defined, and proficiency with it is a non-negotiable signal of competence.
Android SDK engineering is a specialist requirement across several sectors. Fintech and payments companies hire SDK developers to embed checkout, KYC, and wallet functionality inside merchant apps. AdTech and analytics firms need SDKs that capture event data without harming host app performance. Mobile gaming studios commission SDKs for ads, attribution, and in-app purchases.
Healthcare and IoT businesses rely on SDKs to communicate with Bluetooth Low Energy devices, wearables, and medical sensors. Media and streaming platforms package playback, DRM, and casting features into reusable libraries. Logistics, ride-hailing, and field service companies build SDKs for fleet tracking, geofencing, and offline data sync.
Strong candidates show a portfolio of published libraries, contributions to open-source Android projects, or detailed case studies of SDKs they have shipped to production. Look for engineers who can articulate API design tradeoffs, not just feature lists. Experience supporting a wide range of Android API levels, OEM customizations, and device form factors is a meaningful differentiator.
Check for fluency in Kotlin, familiarity with the Android lifecycle, and comfort with Gradle build configuration. Candidates should also understand semantic versioning, backward compatibility, and how to deprecate APIs without breaking integrators. Written communication matters here because SDK developers produce documentation that other engineers consume.
Useful interview questions to copy and use:
Freelancer.com gives you access to a global pool of mobile engineers with proven Android SDK experience, from independent specialists to established development studios. You can compare profiles, portfolios, ratings, and verified credentials in one place, and receive competitive bids shaped to your brief. Clients on Freelancer.com set their own budgets, so pricing reflects scope and seniority rather than fixed packages.
The platform's review system, milestone payments, and chat tools make it straightforward to vet, communicate with, and pay freelancers on Freelancer.com without the overhead of agency intermediaries. Whether you need a short integration sprint or a long-term SDK maintenance partner, you can find Android engineers covering Kotlin, Java, NDK, Jetpack, and the broader mobile development stack.
Hiring an Android SDK developer starts with a precise brief and ends with a structured evaluation of proposals and profiles. The clearer you are about the SDK's purpose, supported Android versions, and integration model, the better the bids you will receive. The three steps below walk through the process on Freelancer.com.
The project post is the single biggest determinant of bid quality. A specific brief filters out generic Android developers and attracts engineers with genuine SDK experience. Head to the
Bids are short proposals, not just price quotes. They reveal how each freelancer interprets your brief, what architecture they propose, and whether their timeline is realistic. Read each proposal carefully and shortlist candidates whose technical approach matches the SDK you actually need.
The final decision combines proposal quality with profile evidence. For SDK work, look for consistency across multiple library projects rather than one strong sample, since the discipline rewards engineers who have maintained code over time. Verified credentials and a record of on-time delivery matter as much as raw technical fluency.
A focused SDK with a narrow feature set, such as an analytics or push notification wrapper, can be built in a few weeks. Larger SDKs covering payments, media playback, or BLE device communication typically run for several months including testing, documentation, and rollout. Timelines depend on the number of supported API levels and the depth of integration testing required.
An Android app developer builds end-user applications with screens, navigation, and product features. An Android SDK developer builds reusable libraries that other developers integrate into their apps, which requires stronger emphasis on API design, backward compatibility, documentation, and minimal footprint. Many engineers do both, but SDK work is a more specialized discipline.
A freelance specialist is often the right choice for defined SDK scopes, integrations, or bug fixes where you want direct access to the engineer doing the work. Agencies make more sense when you need parallel iOS, Android, and backend teams coordinated under one delivery manager. Freelancer.com supports both models, including small teams that bid as a unit.
Some engineers work across both platforms, particularly those building cross-platform SDKs for analytics, ads, or payments. However, deep Android SDK expertise and deep iOS SDK expertise are distinct skill sets, and most senior specialists focus on one platform. If you need parity across both, consider hiring a developer per platform or a small team.
Yes. Many clients hire Android SDK developers for short engagements such as integrating a third-party SDK, resolving Gradle conflicts, fixing ProGuard rules, or porting an existing library to newer Android versions. Define the scope clearly in your brief and you will attract bids matched to that work.
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