Hire the Best Composable Application Developers

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Mike D.

Belem, Brazil

$45/hr
4.7
36 jobs

Unity developer with a technical art background, working across the full real-time pipeline — from gameplay and tooling code to shaders, VFX, lighting and optimization. I sit comfortably between engineering and art, which lets me translate creative intent into something that actually ships and holds framerate. I've delivered projects across AR/VR, WebGL and mobile, each with its own constraints: XR comfort and interaction design, aggressive draw-call and memory budgets on mobile, and load-time and build-size discipline for the web. That range has made me pragmatic about trade-offs and comfortable owning a feature end to end, from prototype to release build. On the art side, my focus is real-time VFX — particle systems, VFX Graph, custom shaders and Shader Graph — along with the tooling that keeps production moving: editor scripts, automated asset workflows and art-side debugging tools. I also integrate AI throughout my 3D creation process, using generative and assistive tools for concepting, texturing, asset generation, retopology support and iteration speed. I treat AI as part of the pipeline rather than a novelty: it shortens the distance between idea and playable prototype, while the final quality bar stays a craft decision.

  • Blender
  • 3D Modeling
  • 3D Animation
  • Scripting
  • Bug Fix
  • Mobile Game
  • Smartphone
  • Android
  • Python
  • Unity
  • Game Development
  • Game Customization
  • C#
  • PC Game
  • Automation
  • AR & VR
  • Three.js
Marcos M.

San Francisco, California

$75/hr
4.9
386 jobs

Have an app idea, an MVP to launch, or a vibe coding/AI prototype stuck in dev? Top 1% Upwork developer: My clients raised $350M+, hit 2M+ users, and earned 10K+ 5-star reviews. For 10+ years, I’ve helped entrepreneurs & business owners turn early concepts into scalable, high-revenue apps. Who I Help I speak founder and business, not just technical jargon. I am the right partner if you need to: • Fix & rescue a broken, "vibe-coded," or unfinished AI prototype. • Launch a lean MVP to validate your app idea quickly without overspending. • Scale an existing app or build custom internal software to streamline operations for your business. Why Work With Me? I’ve walked in your shoes. Over a decade ago, I was a non-technical founder hiring freelancers on Upwork. I made every costly mistake in the book—choosing the wrong tech stack, making bad hires, and skipping early user validation. Through two years of trial and error, I overcame those hurdles to launch SchooLinks (now an Inc. 5000 edtech platform with $90M+ raised). Later, as VP of Tech for UC Berkeley’s Entrepreneurship Association, I discovered a true passion for mentoring founders. Today, I dedicate my career to helping entrepreneurs & business owners launch web and mobile apps while bypassing those exact expensive missteps. Track Record & Achievements: • $350M+ Raised: Total funding secured by client apps built under my direction • 2M+ Active Users: Scale achieved across apps I’ve designed and developed • 10K+ 5-Star Reviews: User satisfaction on launched apps • Top 1% Talent: Recognized as a premier App Designer & Developer on Upwork • Trusted by Top Brands: Launched projects for Harvard, Samsung, Indeed, Yamaha, and USF Core Tech Stack & Tools • AI-Driven Development: Cursor, Claude Code, OpenAI, Gemini, Lovable • Frontend & Mobile: Flutter, Angular, Figma (UI/UX) • Backend & Cloud: Node.js, Supabase, AWS, MongoDB Let’s Build Smart If this resonates with you, let’s talk. I offer strategy consultations where we’ll review your project and build a clear, actionable execution plan tailored to your goals. Reach out today to save months of frustration, cut thousands in wasted dev spend, and validate your app idea the lean way.

  • Mobile App Design
  • Mobile App Redesign
  • UI/UX Prototyping
  • Android
  • iOS
  • Web Application
  • Mobile App Development
  • Front-End Development
  • UX & UI
  • User Experience Design
  • iOS Development
  • Android App Development
  • Software Development
  • JavaScript
  • User Authentication
  • App Design
  • AI App Development
  • Mobile App
Kaysar Zaman A.

Khulna, Bangladesh

$20/hr
5.0
2 jobs

I’m a Full-Stack Web & Mobile App Developer with extensive experience in Motion Design, helping businesses build modern digital products and present them professionally through polished visual content. My primary focus is Web Development and Mobile App Development, including Flutter applications, custom web platforms, SaaS products, dashboards, WordPress websites, backend systems, databases, authentication, APIs, payments, and cloud integrations. Alongside development, I bring strong experience in Motion Graphics, UI Animation, Product Animation, 3D Animation, and After Effects, making me especially useful for startups and businesses that need both a functional digital product and high-quality visual presentation. 💻 Web & Full-Stack Development Custom Web Applications Responsive Websites SaaS & MVP Development Admin Panels & Dashboards WordPress Development PHP Development Supabase Backend Development PostgreSQL / SQL REST API Integration Authentication & User Management Payment Gateway Integration Cloud Storage & Deployment 📱 Mobile App Development Flutter Development Android & iOS Apps Supabase & Firebase Integration Push Notifications Real-Time Chat Audio & Video Calling Payment Integration API Integration Authentication Database Integration 🎬 Motion Design & Animation Motion Graphics UI & Product Animation SaaS / App Promo Videos 2D & 3D Animation Product Visualization Explainer Videos Logo Animation Website Animation Technologies & Tools Flutter • Dart • Supabase • PostgreSQL • PHP • WordPress • Firebase • REST APIs • LiveKit • Cloudflare R2 • HTML • CSS • JavaScript • Adobe After Effects • Blender • Maya • Photoshop Whether you need a Flutter mobile app, custom web application, SaaS platform, business website, dashboard, or professional motion graphics, I can help take the project from concept through implementation and presentation. Send me a message and tell me what you're looking to build.

  • 3D Rendering
  • Compositing
  • Blender
  • 3D Design
  • 3D Animation
  • Adobe After Effects
  • Adobe Premiere Pro
  • Logo Animation
  • Brand Identity
  • Promotional Video
  • Flutter
  • Mobile App Development
  • Web Development
  • WordPress
  • PHP
  • Supabase
  • API Integration
  • Front-End Development
  • Back-End Development
Ayoub B.

Argenteuil, France

$80/hr
5.0
24 jobs

I build production-grade audio plugins, embedded/hardware systems, real-time 3D tools, and AI-powered software for startups and studios, from C++/JUCE DSP engines and sensor/embedded firmware to WebGL configurators and AI pipelines, shipped end to end. My strength is combining rigorous engineering with design precision: the result is software that's not just functional, but fast, polished, and easy to use. Core skills: Embedded/Hardware: C++, ESP32, Raspberry Pi, SocketCAN, real-time constrained systems, sensor integration and correction Audio/DSP: JUCE, C++23, VST3/AU/CLAP, FFmpeg, custom plugin GUIs 3D/XR: Three.js, WebGL, WebXR, Unity, Unreal Engine, OpenGL, Blender AI/ML: Python, PyTorch, OpenCV, RAG, FastAPI, automation workflows Full-Stack: Next.js, React, Electron, Node.js, Cloudflare-native architectures (Workers, D1, R2) for SaaS products and creative tools I work best as an ongoing technical partner on retainer or for multi-phase builds, for teams shipping complex creative, embedded, or AI-powered software. Happy to scope shorter projects too, but I do my best work when I'm involved from architecture through launch.

  • C++
  • C#
  • TypeScript
  • Python
  • Rust
  • Audio Engineering
  • Audio & Music Software
  • Digital Signal Processing
  • AI Consulting
  • Cloudflare
  • FFmpeg
  • Next.js
  • PostgreSQL
  • Three.js
  • WebGL
  • Unreal Engine
  • Unity
  • Blender
  • AI Agent Development
Michael L.

Ramat Gan, Israel

$45/hr
5.0
54 jobs

I specialize in workflow automation and pipeline development primarily for computer graphics, video, and image processing - drawing on years of experience as a technical director at an animation studio. I'm always happy to discuss your task or project and explore solutions together. / __what_i_deliver__ - Automation of production processes, especially where the use of computer graphics is required - Tool & plugin development for 3D applications, building USD-based pipelines - Character animation, motion capture pipelines, rigging/retargeting, procedural and data-driven animation systems - Synthetic 3d data generation, parametric modeling, Gaussian splatting - Image and video generation and processing - Render farm setup, cloud rendering infrastructure and cost optimization - SaaS Full-stack dev, DevOps, serverless GPU deployment - Blockchain apps, smart contracts dev - Reverse engineering, binary analysis, decompilation - R&D, mathematical tasks, algorithm implementation - Embedded systems & IoT: ESP32, Raspberry Pi, Arduino and more / __tech_stack__ - Python, C++, TypeScript, Dart, GLSL - Backend: FastAPI, Node.js/Express, NestJS, MongoDB, PostgreSQL, Redis - Frontend: Qt (PySide), Svelte, React, Next.js, Flutter, Three.js, WebGL - ML/Generative: ComfyUI, PyTorch - Computer vision: OpenCV, MediaPipe, SAM, Yolo, ResNet - AI agents: LangGraph, Google ADK, Anthropic API - web3: Solidity, Hardhat, Foundry, OpenZeppelin, Dynamic.xyz, Alchemy, IPFS - Infra cloud: AWS , GCP, Hetzner, Railway, Vercel, Nextcloud - Infra GPU cloud: Runpod, Modal, vast.ai, Koyeb - Infra Devops: IaC, Docker, K8s, Terraform, MinIO, NAS, S3 - RE: Frida, Ghidra, IL2CPP / __3d_dcc_&_pipeline__ - Blender (bpy, GeoNodes), Autodesk Maya (mel/python/OpenMaya), SideFX Houdini (hython, hscript, HDK), 3ds Max (maxscript), Unreal Engine, Foundry Nuke (incl. BlinkScript), Katana, DaVinci Resolve (incl. DCTL creation and Lua scripting), NVIDIA Omniverse, Lyra - Characters: MetaHuman, DAZ Genesis, Faceform Wrap, Mixamo rig, Blender Rigify, Auto-Rig pro - AI mocap: SMPL/SMPL-X, Momentum Human Rig (MHR), GVHMR, SAM3 - Render engines: Pixar RenderMan, Maxon Redshift, Karma, Arnold, Cycles - Render farm management: AWS Deadline Cloud, Pixar Tractor, Fox Renderfarm - Adobe CEP and UXP extensions, ExtendScript and C++ plugins for After Effects, Premiere Pro, Photoshop, Illustrator - Project management: ShotGrid (now Autodesk Flow), FTrack, Perforce - Opensource industry: ASWF projects (ACES, OpenColorIO, OpenImageIO, OpenEXR, OSL, rez etc), OpenGL, WebGL, OpenCL, Vulkan, FFmpeg, OpenUSD ... and more. But if you've read this far, and your task is non-standard or lies at the intersection of different, not necessarily technical, fields, then I really love tackling unusual problems when it difficult to find a specialist. Write to me, I'll be glad if I can be of help.

  • Python
  • C++
  • Computer Graphics
  • GPU
  • Blender
  • Houdini
  • Back-End Development
  • Autodesk Maya
  • Adobe After Effects
  • Adobe Premiere Pro
  • FFmpeg
  • Parametric Design
  • Software Architecture
  • Mathematics
  • Software Design Pattern
  • Linear Algebra
  • AWS Development
  • Research & Development
  • Synthetic Data Generation
  • Rendering
Ata Can A.

Istanbul, Turkey

$40/hr
4.9
51 jobs

I’m a Senior Nuke Compositor and VFX Generalist creating polished, production-ready imagery for commercials, branded content, film, episodic work, and digital campaigns. My work spans compositing, CG integration, cleanup and paint, beauty work and retouching, keying, rotoscoping, matchmove, matte painting, set extensions, 2.5D and 3D environments, and final shot finishing. I also integrate generative AI into established VFX workflows, using ComfyUI alongside tools such as Higgsfield AI, Kling AI, Google Veo, Seedance, and Runway for visual development, AI video generation, image and video generation, and shot creation. Generated material can then be refined through professional compositing, 3D, and matchmove, or seamlessly combined with live action and CGI for a more convincing, production-ready result. VFX COMPOSITING • Nuke compositing • CG and multipass render integration • Cleanup, paint, and object removal • Beauty work and retouching • Green-screen keying and edge refinement • Rotoscoping and plate preparation • Screen, logo, and background replacement • Matte paintings and set extensions • 2.5D projections and environment work • Lighting, colour, grain, lens, and depth integration • Final shot finishing and quality control GENERATIVE AI FOR VFX AND CONTENT PRODUCTION • AI-assisted visual development and look exploration • AI video generation for commercials, branded content, product videos, and digital campaigns • ComfyUI, Higgsfield AI, Kling AI, Google Veo, Seedance, and Runway workflows • Text-to-image, image-to-video, and video-to-video content • AI animation and AI-generated video production • AI-generated environments, backgrounds, and shot elements • AI video ads and short-form branded content • Hybrid workflows combining AI, live action, and CGI • Artifact cleanup and visual refinement • Character, product, and environmental consistency • Compositing and integration of generated material • Streamlined workflows for faster iteration and production MATCHMOVE AND 3D I’m highly experienced in camera tracking, object tracking, and matchmove, allowing digital elements, environments, products, and effects to be accurately integrated into moving footage. My 3D capabilities include: • Lighting, shading, and texturing • 3D environments • Procedural simulations • Look development • Basic modelling and asset preparation • Rendering for VFX compositing • Simple object and character animation EDITING AND POST-PRODUCTION I also work in DaVinci Resolve for commercials, branded content, product films, music videos, and cinematic short-form projects. This can include editing, pacing, shot selection, VFX-heavy sequences, colour matching, visual continuity, versioning, and final delivery. I’m a strong fit for projects that require: • Complex compositing or difficult cleanup work • Believable integration of CGI into live-action footage • Generative imagery that needs greater control and realism • AI-generated footage that requires professional compositing • Consistent products, characters, environments, or visual direction • A hybrid workflow combining VFX, 3D, and generative AI • One experienced artist who can take ownership of a shot or sequence Whether you need support on a single demanding shot, a complete sequence, or an AI-assisted VFX workflow, I can help take the project from visual development through final composite and delivery.

  • Nuke
  • Compositing
  • Visual Effects
  • AI Video Generation
  • ElevenLabs
  • Chroma Keying
  • 3D Rendering
  • Keying
  • Video Cleanup
  • Match Moving
  • Rotoscoping
  • Autodesk Maya
  • Blender
  • Adobe After Effects
  • CGI
  • DaVinci Resolve
  • Matte Painting
  • Retouching & Enhancement

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Don't just take our word for it

What does a Composable Application developer do?

A Composable Application developer builds modular software systems by assembling independent, API-first components into a cohesive application architecture. This role focuses on integrating microservices and cloud resources through configuration rather than monolithic coding practices. You define how distinct business capabilities connect and interact within a MACH (Microservices, API-first, Cloud-native, Headless) environment. Your work enables organizations to swap or update specific features without disrupting the entire platform.

  • Design and implement API contracts that govern data exchange and business workflows between independent microservices. You define clear endpoints for CRUD operations and ensure each component communicates via standardized messages or calls. This structure allows different teams to develop features in parallel while maintaining system integrity. Your API designs serve as the binding agreement between disparate services, ensuring predictable behavior during integration.
  • Author YAML configuration files that describe site structures, component integrations, and service dependencies for the composable architecture. You use tools like MACH Composer to coordinate these definitions and generate the necessary infrastructure code. This approach separates business logic from deployment mechanics, allowing you to manage complex environments through declarative settings. Your configurations dictate how components fetch artifacts from source control and apply them to the cloud environment.
  • Orchestrate the provisioning of cloud resources by running pipelines that convert configuration definitions into Terraform code. You deploy MACH-based services and link components to cloud primitives such as databases, storage, and compute instances. This workflow ensures that every environment matches the intended architecture state without manual server setup. You also manage encrypted secrets using tools like SOPS to keep sensitive data secure during the deployment process.
  • Iterate component versions through the lifecycle pipeline to maintain stable deployments and support continuous integration. You test operational readiness by verifying that new modules integrate correctly with existing services before release. This practice minimizes downtime and ensures that updates to one part of the system do not break others. You monitor deployed components to confirm they meet performance standards and adhere to the defined API contracts.

How to hire a Composable Application developer on Upwork

Step 1: Post a job

Define your modular architecture needs clearly to attract specialists who build API-first systems. The Job Post Generator powered by Uma™, Upwork's Mindful AI drafts a precise post after you describe your requirements in a few sentences. You can write a new post, update a saved draft, or reuse an existing post to start your search.

  • Specify experience with MACH Composer and YAML configuration to manage site and component integration definitions.
  • List required skills in Terraform for generating infrastructure-as-code from your composable architecture models.
  • Detail the need for API design expertise to connect microservices and support business workflows effectively.

Step 2: Evaluate candidates

Look for portfolios that demonstrate versioned component implementations and deployed cloud resources. Uma runs instant video interviews and builds shortlists with side-by-side comparisons to help you assess technical fit quickly.

  • Verify candidates have authored architecture configuration artifacts that describe complex service integrations.
  • Check for evidence of managing component lifecycle pipelines to keep deployments stable and secure.
  • Confirm experience using SOPS for encryption and decryption of configuration inputs within CI/CD workflows.

Step 3: Interview your top choices

Discuss how candidates orchestrate infrastructure provisioning and link components to cloud primitives. Schedule and conduct interviews within Upwork Messages to receive an immediate transcript and summary after each session.

  • Ask how they fetch component artifacts from source control and apply them to your cloud environment.
  • Explore their approach to testing operational readiness for component-based system behavior under load.
  • Review their method for iterating component versions without disrupting active business workflows.

Step 4: Agree on scope and begin work

Set clear milestones for delivering API endpoints and infrastructure-as-code outputs. Use Upwork Messages and the contract workroom for communication and project management, plus identity verification, payment protection, hourly tracking, and project funds for security.

  • Define deliverables such as specific YAML files that map out your MACH-based service topology.
  • Establish criteria for accepting deployed components that meet your defined API contracts.
  • Agree on a process for updating Terraform scripts as your composable application scales.

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.

How much does hiring a Composable Application developer cost?

$500-$2,500 per project is a typical range for focused Composable Application developer work. Final pricing depends on scope, technical complexity, required integrations, source-material quality, revision needs, and the freelancer's experience level.

Architecture configuration

$500-$1,200/project

Entry-level to mid-level
  • YAML definitions for site and component integration
  • Generated Terraform scripts for resource provisioning
  • Notes on configuration structure and dependencies

API endpoint development

$1,200-$3,000/project

Mid-level
  • Defined schemas for data exchange and workflows
  • Code implementing CRUD operations and business logic
  • Validation scripts for component communication

Component deployment

$3,000-$6,000/project

Mid-level to senior-level
  • Provisioned services linked to component artifacts
  • Automated workflow for version iteration and stability
  • Records of applied changes and resource states

MACH service integration

$6,000-$9,500/project

Senior-level
  • Connected MACH components with cloud primitives
  • SOPS-secured inputs for secure pipeline execution
  • Verified operational readiness across integrated technologies

Custom composable architecture

$9,500-$15,000/project

Expert-level
  • Complete MACH-style system design and implementation
  • Interconnected APIs supporting complex business workflows
  • Final documentation and stable deployment artifacts

Frequently asked questions

Is hiring a Composable Application developer worth it?

For most businesses, yes: hiring a Composable Application developer is worthwhile. This approach lets you swap out individual services without rewriting the entire system, which reduces long-term maintenance costs. You gain the flexibility to adopt new technologies for specific functions while keeping your core architecture stable.

How do I evaluate Composable Application developer candidates?

Look for candidates who demonstrate experience with MACH principles and infrastructure-as-code tools like Terraform. Ask them to explain how they manage API contracts between microservices to prevent breaking changes during deployment. A strong candidate will describe using YAML configuration files to orchestrate component integration rather than hard-coding connections.

What tools does a Composable Application developer use?

These developers primarily use MACH Composer to coordinate site and component configurations via YAML files. They also rely on Terraform to provision cloud resources and SOPS to handle encryption for sensitive configuration data.

What deliverables should I expect from a Composable Application developer?

You should receive versioned component implementations and API endpoints that support your business workflows. The developer will also submit architecture configuration artifacts and infrastructure-as-code outputs that provision your cloud environment.