The Best Software Architecture Freelancers For Hire In Spain

Check out Software Architecture Freelancers in Spain with the skills you need for your next job.

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$45 hourly
- 5.0/5
- (7 jobs)
Professional Summary • 12+ years developing JEE solutions for banks. Working mainly with those technologies: Java, Spring-boot , Spring MVC, Spring Security.... These applications work under MySQL, SQLServer, and Oracle databases; • 5+ years of designing and developing Restful microservices. • 3+ years of hands-on experience integrating SOAP Web Services, XML, and XSD systems. • 8+ years using Scrum in the software development process, where 3 of those years as Scrum Master; • 7+ Working experience designing, developing, and managing Java applications at AWS and/or Kubernets/Openshift cloud. • The main application container so far was Apache Tomcat, but I also had experience with JBoss and Websphere environments. Main skills: • Proactive, always aim to contribute to team objectives; • Focused on results without losing the quality sense; • Take problems ownership; • Flexible Other tools • Bug Tracking: JIRA, Redmine • Tests and Performance Analysis: Apache Jmeter, SoapUI • Version control: GIT,SVN • Others: IntelliJ, Maven, Eclipse

Software Architecture
Prometheus
Grafana
MySQL
Hibernate
SQL
RESTful Architecture
RESTful API
API Development
Java
Spring Framework
Software Architecture & Design
Microservice
Kubernetes
OpenShift
AWS Development
$75 hourly
- 5.0/5
- (1 job)
Pay cheap, pay twice—or hire me and get it done right the first time. I’m a senior software engineer who excels at fixing the mess others leave behind. If your project’s in trouble, I’ll turn it around fast and right. I can help you with: ✓ Taking over, auditing, and improving your existing mobile app ✓ Creating your mobile app from scratch ✓ Joining your mobile team My strengths ✓+20 years of experience as a software engineer and architect ✓ +10 years of experience creating mobile apps ✓ Worked with companies of all sizes: startups, SMEs, and large corporations ✓ Business oriented. I’m an entrepreneur myself. ✓ Industry best practices (Test-Driven Development (TDD), Clean Architecture, Clean Code, SOLID principles, and CI/CD) ✓ Latest Android technologies (Kotlin, coroutines, MVVM, Jetpack Compose, JUnit, MockK) ✓ Experience with Flutter, Kotlin Multiplatform and many backend technologies. ✓ Willing to push the boundaries and assuming new challenges FAQ 1. Why should I trust you over other freelancers? I’ve been hired repeatedly to fix projects that were left in chaos by other developers. I bring proven experience in delivering quality code and rescuing troubled projects. 2. How do you handle poor-quality code from previous developers? I specialize in assessing and fixing messy code. Instead of starting from scratch, I analyze what can be salvaged and ensure the project gets back on track efficiently. 3. What if I’m not technical? Can you help me understand progress? Absolutely. I provide clear communication, regular demos, and updates to ensure you’re always in the loop, regardless of your technical background. 4. What happens if the project scope is unclear or changes? I’m used to working with evolving requirements, especially in fast-paced startups. I help refine the scope and keep the project aligned with your goals, even as they change. 5. Do you subcontract your work? No. When you hire me, you work directly with me. I don’t outsource or subcontract any part of your project. 6. Can you deliver high-quality work even if it’s more expensive? Yes. While I charge more than low-budget developers, my focus is on delivering quality that lasts, saving you from the costs of rebuilding or fixing poor-quality work later. 7. How will I know the project is progressing as planned? I provide regular progress updates and deliverables, ensuring transparency. You’ll always know what’s happening and why, with no surprises. 8. Why is it better to hire you than a cheaper developer? Cheaper developers often deliver poor results, costing you more in the long run. I fix those mistakes, delivering work right the first time to save you from expensive rebuilds. Technologies During my professional career I employed a number of technologies including C, C ++, Java, Kotlin, Flutter, Dart, PHP, Laravel, Python, SQL, .NET, Django, CSS, JavaScript, TypeScript, Angular, Spring Boot, computer vision, among others. More: cesarmauri.com I've worked with clients worldwide, both directly and through platforms like Malt and Shakers. Be among the first to hire me on Upwork! Let's talk?

Software Architecture
C++
Project Management
Java
Flutter
Android
Software Architecture & Design
Continuous Integration
Test-Driven Development
Clean Architecture
Kotlin
$70 hourly
- 5.0/5
- (12 jobs)
I'm the founder and product director of Savant (GitHub link) - an open-source computer vision and video analytics framework on DeepStream. I specialize in high-performance inference in computer vision and video analytics optimized for Nvidia data center and edge hardware. I design and develop scalable, high-performance computer vision architecture with the most advanced and efficient technologies from Nvidia and Savant. As a software developer, I create Rust libraries for Python code optimization.

Software Architecture
Image Recognition
Amazon Kinesis Video Streams
WebRTC
Object Detection & Tracking
TensorRT
YOLO
FFmpeg
GStreamer
CUDA
Software Architecture & Design
Multithreaded, Parallel, & Distributed Programming Language
OpenCV
Python
Docker
Rust
$50 hourly
- 5.0/5
- (6 jobs)
Backend Developer: JAVA 8/11, Spring Framework, SQL/NoSQL Databases. Experience in all phases of Software Development Life Cycle with a strong emphasis on analysis, design and development.

Software Architecture
Unit Testing
Swagger
API Integration
API Development
Java
SQL
Spring Boot
Spring Framework
RESTful Architecture
RESTful API
PostgreSQL
API
MySQL
Software Architecture & Design
Microservice
$150 hourly
- 4.8/5
- (64 jobs)
Limited availability: only for consultations. 7 years of commercial experience in Software Engineering / Software Architecture 7 years of commercial experience in ML, NLP, NLU, NLG Helped brands like Adnoc ($12.38B market cap) and Rogers ($24.21B market cap) Data-driven methodology References from AI opinion leaders Consulting/Research Results in Numbers: - Average reduction in project expenses: 20-70% cut in costs - Average acceleration rate in integration and development cycles: 40-80% faster - Customer Satisfaction Score (CSAT): 95% CONSULTATIONS FOR: DESIGN & DEVELOPMENT OF: Proof of concept (POC), Prototypes, Demos, Production-ready products, like: Scientific papers reproduction Complex AI application for text understanding Data-rich systems for text processing Search / Question-Answering systems Text / Documents classification apps Text mining and analysis systems Ontology-based systems Text clustering systems Knowledge representation systems Text generation pipelines Chatbots, Prompts engineering Large-scale language models training ML models benchmarking, profiling, optimisation Graphs analysis Documents analysis Other? Just write me a message! Data-rich SaaS applications development with micro-service architecture SDLC best practices, Continuous integration, Scrum / Agile Trainings and masterclasses for your organisation: - Generative AI and ML bootcamps and training sessions (2-3 days) - Best practices in AI risk management: masterclass (3-5 hours) - Best practices in AI integration (2-3 days) - Generative AI innovations management (1-2 days) Need a team? I will help with targeted AI teams creation from scratch, hiring AI experts, tech interviews / skills assessment Technologies: Programming language: Python 3 Databases: SQL/NoSQL, MongoDB, PostgreSQL, Neo4J Search engines: ElasticSearch, Sphinx, Apache Nutch, Apache Lucene, Solr, Custom from scratch Deep Learning frameworks: Torch / PyTorch Restful API with Flask, Django, Django-REST, Nginx, Gunicorn System: Debian, Ubuntu; Containers: Kubernetes, Docker Tools: Numpy, Pandas, Spacy, Gensim, Transformers, NLTK, CoreNLP, Other Large-scale language models: Any model from HuggingFace, Any LLM API, OpenAI, FB LLama3, Google T5, Custom models from scratch! Deep Learning: Convolutional Neural Network (CNN), Recurrent Neural Networks (RNNs), Long Short-Term Memory Networks (LSTMs) Dimensionality Reduction: Principal Component Analysis (PCA), Principal Component Regression (PCR), Partial Least Squares Regression (PLSR), Other Ontologies: RDF, RDFS, OWL, SPARQL, Apache Jena, Open Cyc Cloud computing: Google Cloud, AWS, Microsoft Azure APIs: AWS, Google, Azure, any other Hardware: CPU, GPU, Multi-GPU, TPU ML models benchmarking, profiling, optimisation Graphs analysis AI for Medical research: PubMed biomedical content processing Other? No problems, just write me a message * The money-back guarantee program is exclusively tailored for established companies meeting specific criteria: a minimum annual revenue of over $500k, a track record of at least 5 years in the market, a strong reputation, and possessing all necessary legal and tax documentation. Requires additional contract before we start. Ask me for the details. This program ensures a refund if the service fails to meet your expectations.

Software Architecture
LLaMA
LangChain
Generative AI
API
Data Analysis
Solution Architecture
Google Cloud Platform
Feature Extraction
Artificial Intelligence
Artificial Neural Network
Data Science
Deep Learning
Machine Learning
Software Architecture & Design
Natural Language Processing
$60 hourly
- 4.6/5
- (13 jobs)
Experienced Full-Stack PHP Developer Specializing in Symfony and React I am a seasoned Full-Stack Developer with extensive experience in Symfony and React. My passion lies in translating complex client needs into effective, high-quality solutions that drive business growth. What I Offer: In-Depth Consultation: I take the time to understand your unique needs by asking insightful questions before any coding begins. Collaborative Development: Partnering closely with project managers, clients, designers, and stakeholders, I ensure that the final product meets and exceeds expectations. Technical Expertise: In addition to Symfony APIs and web applications, I bring solid experience with JavaScript frameworks, Laravel, Drupal, and WordPress. My Approach: Simplicity and Maintainability: I focus on creating clean, efficient, and easy-to-maintain code. User Experience: Delivering software that is both intuitive and enjoyable to use is a core principle in my development process. Reliability: Committed to meeting deadlines and ensuring top-quality results, I expect the same level of dedication from my clients. I am dedicated to turning your vision into reality. Feel free to request a detailed CV to learn more about my background and how I can contribute to your project. Let's collaborate and build something amazing!

Software Architecture
Management Skills
Cross Functional Team Leadership
Software Architecture & Design
Domain-Driven Design
Web Service
API Development
Agile Software Development
React
CSS
PHP
Web Application
JavaScript
Symfony
WordPress
jQuery
$85 hourly
- 5.0/5
- (13 jobs)
Thank you for checking my profile! My name is Caglar and I’m a freelance cloud solution architect - Do not worry, I still enjoy coding very much :) My specialties are: - Cloud Architecture - DevOps - API Development / Database Design - Python Programming - Computer Vision / Deep Learning - Mobile App Development I have experience working as Co-founder / Technical Manager in 2 startups and I understand exactly how you want me to help you on your projects. No matter the stage you are at as an entrepreneur, my main objectives are to help you bring your vision to life and your product to market.

Software Architecture
Software Architecture & Design
CI/CD
Scripting
Automation
DevOps
Database
API Development
Blockchain
Google Cloud Platform
Machine Learning
iOS Development
Python
Amazon Web Services
Computer Vision
Deep Learning
$80 hourly
- 0.0/5
- (0 jobs)
ARQUITECTO TÉCNICO Y DESARROLLADOR EN SALESFORCE SUMMARY System Engineer with over 14 years of experience in SalesForce, I am a highly resourceful specialist in configurations and development within the Force.com platform. I am an accomplished Salesforce consultant in diverse industries such as banking, insurance, health, government, oil and gas, energy companies, car industry on an international level.

Software Architecture
Software Architecture & Design
Salesforce Sales Cloud
Salesforce Service Cloud
Salesforce CRM
Salesforce Lightning
Salesforce App Development
Agile Software Development
$55 hourly
- 0.0/5
- (0 jobs)
Hi, I'm Lázaro. I am a Data Engineer with over 7 years of experience at leading consultancy firms such as Accenture and BJSS. During my tenure at these companies, I identified and overcame significant corporate challenges, which inspired me to co-found Illo Solutions. At Illo Solutions, our mission is to empower businesses to thrive by harnessing their data and transforming it into actionable insights. My expertise lies in serverless technologies, AWS Serverless, IAM, Python, SQL, C++, JavaScript, TypeScript, Terraform, and CI/CD. I cover the entire data lifecycle from ETL to visualization, ensuring that our solutions are both efficient and user-friendly. I hold several AWS certifications, underscoring my commitment to staying current with the latest industry trends. I believe in the power of a happy, focused team. By fostering a collaborative and dynamic work environment, I ensure that our team is aligned with our clients' needs, leading to more efficient and innovative solutions.

Software Architecture
Software Architecture & Design
Analytics Dashboard
SQL
Data Warehousing & ETL Software
Data Warehousing
Data Engineering
Machine Learning
Machine Learning Model
Artificial Intelligence
ETL Pipeline
ETL
Data Extraction
$40 hourly
- 0.0/5
- (0 jobs)
I am a skilled Cloud Solutions Architect with expertise in designing and implementing scalable, secure, and efficient systems for businesses. With a strong background in solution design, integrations, and API management, I specialize in simplifying complex architectures to meet enterprise needs. Passionate about leveraging technology to solve problems and drive innovation

Software Architecture
Architectural Diagram
Sequence Diagram
Microservice
Event-Driven Programming
Apache Kafka
Docker
TypeScript
Java
Vue.js
Spring Boot
Amazon Web Services
Cloud Architecture
Enterprise Software Development
Software Architecture & Design
$115 hourly
- 5.0/5
- (15 jobs)
As an experienced Software Engineer, I specialize in AI/ML and Software Development. I offer comprehensive software development, architecture design, and data management services. My skill set is geared towards developing robust AI solutions that drive innovation and efficiency. Areas of Expertise: - AI/ML Development: Skilled in model deployment, training, and fine-tuning to enhance machine learning workflows. - RAG and Prompt Engineering: Advanced knowledge in Retrieval-Augmented Generation for improving AI responsiveness and utility. - Knowledge Extraction: Expertise in deriving valuable insights from complex datasets to inform strategic decisions. - MLOps and LLMOps: Proficient in managing machine learning operations to streamline model lifecycle management and deployment. Technologies and Tools: - Frameworks and Platforms: Pytorch, Databricks, and specialized in RAG applications. - Vector Databases: Experience with Pinecone, ChromaDB, and Weaviate. - Cloud Services and AI Integration: Proficient with all Cloud Infrastructure, AWS SageMaker, and Amazon Bedrock. - Advanced Training Techniques: Deep expertise in Domain-Projected Optimization (DPO), Reinforcement Learning with Human Feedback (RLHF), Proximal Policy Optimization (PPO), and Parameter-Efficient Transfer Learning (PEFT) including LoRA and QLoRA. When you work with me, you can expect clear communication, timely updates, and a dedication to excellence. I am committed to understanding your unique needs and developing a solution that exceeds your expectations. My extensive experience and diverse skill set enable me to tackle even the most complex projects efficiently. Thank you for considering my services, and I look forward to working with you on your next project.

Software Architecture
Prompt Engineering
AI Model Training
Retrieval Augmented Generation
Multimodal Large Language Model
AI Development
AI Agent Development
Agent GPT
Large Language Model
Machine Learning
Artificial Intelligence
Software Architecture & Design
Solidity
Software Development
Database Modeling
Content Writing
$35 hourly
- 5.0/5
- (13 jobs)
I am an Architect living in Spain. Professionally I could describe myself as an all round architect, always looking for challenges in order to improve and achieve the best solution. Creative, Organized, Precise, and Proactive attitude are characteristics with which I face every new project. My latest positions include: Senior Design Architect & Building-Site Director at Teresa Sapey + Partners, Project Manager at Fira Barcelona, and Marketing manager & Graphic Designer at Tecfire ME. I am always ready to put my creativity, experience, and know how in any kind of project, from helping you with drawing the smallest floor plan to designing a master plan, and you can rest assured that I will face both with the same level of commitment.

Software Architecture
Software Architecture & Design
Autodesk 3ds Max
Rhinoceros 3D
Autodesk Revit
Interior Design
Blender
Archicad
3D Design
Architectural Rendering
Architectural Design
2D Design
Autodesk AutoCAD
Photography
Adobe Illustrator
Adobe Photoshop
$40 hourly
- 5.0/5
- (1 job)
Hi everyone, I represent a team of highly skilled developers at Kairox Apps, a mobile and AI applications development company. Our expertise lies in implementing the latest technologies - AI, AR, VR, WEB 3.0. Our capabilities: ▫️ Development of business applications (Android, iOS, Web) and websites from scratch; ▫️ AI model development and implementation; ▫️ Mobile application development for Augmented and Virtual reality (VR/AR); ▫️ Supporting and updating already released applications. What we need: -Full/Partial specs of the project you would like to develop (links to similar apps on the App Store) -Designs if you have it ready If we could be of help to you, let me know, and we can discuss your project and requirements further. Telegram: @nataliakairox

Software Architecture
Software Architecture & Design
Software Development
Unity
AI Mobile App Development
AI App Development
Mobile Game Development
Game Development
Desktop Application
Augmented Reality
Virtual Reality
Artificial Intelligence
Python
C#
Mobile App Development
AI Development
$30 hourly
- 4.0/5
- (1 job)
My name is Facundo Villalba, I am a Java Backend Developer with experience on Java (8 or 11) and Spring Boot, I also have experience creating software based on Microservices Architecture. I have experience with MySQL databases. I'm also certified on AWS Cloud Practitioner course. For testing I use Mockito and JUnit. With the clientes I work with Agile Methodology, more specific with Scrum. I'm graduated from National Tech University in Mar del Plata, Argentina.

Software Architecture
Kotlin
Amazon Web Services
MySQL
Spring Boot
Apache Tomcat
Apache Kafka
Spring Framework
Java
Microservice
Linux
Software Architecture & Design
Docker
$30 hourly
- 0.0/5
- (0 jobs)
ABOUT ME I'm a software engineer working in Knowmad Mood company since 2020. I've graduated as a Software engineer specialized in Information and Communication Technologies at Cádiz university. I'm a hard-working person who is always looking for new challenges or things to learn to improve their skills and increase the professional development of my working career.

Software Architecture
Agile Project Management
Scrum
Computer Engineering
Technical Writing
Software Architecture & Design
Software Development
JavaScript
Ruby on Rails
$20 hourly
- 0.0/5
- (0 jobs)
I'm a developer experienced in building robust backend systems, APIs, and microservices for small and medium-sized businesses. Whether you are looking to streamline operations, integrate services, or develop a scalable solution, I will help you. - Expertise in C#, .NET, ASP.NET Core, RESTful APIs, and microservices architecture - End-to-end project management from planning to deployment - Project planning and timelines will be collaboratively defined to ensure they meet your specific needs and objectives.

Software Architecture
.NET Framework
RESTful Architecture
RESTful API
REST API
AWS AppSync
Microsoft Azure
ASP.NET MVC
ASP.NET Web API
ASP
ASP.NET
.NET Core
Back-End Development Framework
Back-End Development
Software Architecture & Design
$80 hourly
- 0.0/5
- (0 jobs)
Experienced Software Engineer with a demonstrated history of working in the computer software industry and aExperienced Software Engineer with over 10 years in the industry and a Bachelor's in Computer Science. Passionate about frontend technologies like JavaScript, TypeScript, Node.js, and proficient in backend development with Java and Spring. Proven track record of designing and implementing architectural solutions, delivering robust systems for prestigious clients. Specialized in top-tier tech solutions like Ads serving and fraud prevention. Committed to innovation, efficiency, and maintaining system integrity in demanding environments. Bachelor's Degree focused in Computer Sciences.Passionate about Javascript/ Typescript and all technologies related to Nodejs environment.

Software Architecture
Fraud Detection
React
ExpressJS
Node.js
TypeScript
JavaScript
Spring Boot
Java
Database
Web Development
Software Development
Software Architecture & Design
$46 hourly
- 0.0/5
- (0 jobs)
Hello. I am an experienced software engineer with over 8 years of technical background. My primary role in companies is Team Lead because I have a wide vision and understanding of business and product needs, strong technical knowledge, and excellent communication skills. I'm here to help with technical and architectural tasks. Also, I'd be happy to assist with building internal processes in development teams.

Software Architecture
Scrum
Product Management
Software Architecture & Design
Microservice
React
JavaScript
TypeScript
ExpressJS
Node.js
NestJS
API Development
Web Development
$20 hourly
- 0.0/5
- (0 jobs)
My goal is to continue growing every day with my greatest hobby, which is software development, and to find new challenges in technologies I would love to work with. PROJECTS Bamo App: iOS/Android application developed in Flutter with Rust as the backend (entirely developed by me), using Tokio, Axum, and Redis as the publisher-subscriber mechanism for communication between services and WebSockets. The application helps find movies, TV shows, etc., among multiple people in real-time using a matching mechanism.

Software Architecture
Web Development
Linux
Multithreaded, Parallel, & Distributed Programming Language
PostgreSQL
Oracle Database
Software Architecture & Design
Redis
Apache Kafka
Rust
Spring Boot
Java
$30 hourly
- 0.0/5
- (0 jobs)
Results-driven Software Engineer with 5 years of experience delivering impactful solutions for projects serving millions of users. Skilled in system architecture, full-scale development, and cross-functional collaboration, combining technical expertise with strong communication to drive success in planning, designing, and implementing innovative solutions.

Software Architecture
Solution Architecture
React
TypeScript
Terraform
Amazon Web Services
Python
Scripting
Software Architecture & Design
Cloud Computing
Cloud Architecture
Web Development
Web Application
$50 hourly
- 0.0/5
- (0 jobs)
Experienced Senior Linux Engineer - with over 20 years designing and developing on Debian based systems. Visionary thinker and problem-solver, I've spearheaded the development of Elive Linux distribution, known for its usability and innovation. Proficient in system administration, software development of specific needs, issues solving, and packaging expertise, and enhancing user experience, I thrive on optimizing efficiency and automation.

Software Architecture
Debian
Linux System Administration
Linux
Computer Operating System
Operating Systems Development
Operating System
Scripts & Utilities
Software Architecture & Design
Software Utility
Software Systems Engineering
Software Debugging
Software Design
Artificial Intelligence
$18 hourly
- 5.0/5
- (1 job)
Your Reliable Partner for High-Quality Web Development Solutions With a Master’s in Information Technology (MSc in IT) from Chengdu University of Technology and a Bachelor’s in Computer Applications from Universidad de Alicante, I bring both advanced knowledge and over 7 years of full-stack web development experience to each project. My expertise spans front-end and back-end development, including PHP (WordPress, Laravel), C# (.NET MVC), HTML5/CSS3, JavaScript frameworks (React, Vue, Node.js), and cloud solutions like AWS and Azure. I offer a full suite of WordPress services, from custom theme design and plugin development to WooCommerce customization, responsive HTML, and SEO optimization. Whether you're building an e-commerce platform, CRM, or high-traffic dashboard, I deliver mobile-friendly, scalable solutions that meet Google’s standards. With a focus on reliability, responsiveness, and long-term support, I prioritize open communication and dedicated follow-through to ensure each project’s success. Let’s bring your vision to life with high-quality, tailored solutions!

Software Architecture
App Design
Software Design
Web Analytics Bug Fix
Adobe Photoshop
Software Architecture & Design
Web & Mobile Design Consultation
Web Development
Design-to-Code
Software Development
Web Development Consultation
Web Content Strategy
App Development
Web Design
App Icon Design
Web Content Development
$20 hourly
- 0.0/5
- (0 jobs)
Hi there! 👋 I’m a software developer with extensive experience in various programming languages and technologies. I’m passionate about tackling complex problems and crafting innovative solutions that make an impact. Technical Skills: Programming Languages: Kotlin, Python, TypeScript, JavaScript, Java, C, Haskell, Prolog. Frameworks and Technologies: React for building modern and efficient frontend applications. Specialization: Development of AI-based solutions. Key Achievements: Winner of several hackathons, including: Agrotech Hackathon: Innovating technology solutions for the agricultural sector. Zeleros Hyperloop Hackathon: Designing and implementing advanced technological solutions for next-generation transportation systems. Certified in cybersecurity through Hack The Box, demonstrating expertise in secure development and adherence to best security practices. Languages: Spanish: Native. English: Fluent, ideal for international projects and global team collaboration. I’m a results-driven professional dedicated to delivering high-quality solutions tailored to each client’s needs. If you’re looking for a versatile developer with proven expertise and an innovative mindset, let’s work together to bring your ideas to life! 🚀

Software Architecture
JavaScript
React
TypeScript
Kotlin
Computer Engineering
Software Debugging
Software Architecture & Design
User Interface Design
Software Development
Python
Firebase Cloud Firestore
Java
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