Hire the Best Startup Freelancers in Buenos Aires, AR

Hi, I'm Fabi! I am a Performance Marketing Analyst with a Bachelor's in Economics, and I am also certified in Google Analytics and Google Tag Manager. I enjoy working with businesses of all sizes to help them make Data-Driven decisions. Customer satisfaction is my top priority. I look forward to working with you! I can work with: - Set Up Google Analytics, Google Tag Manager, Google Search Console, Facebook Pixel and API, TikTok Pixel, etc. - Event tracking and Conversion tracking for Google Analytics, Facebook, Google Ads, Pinterest, TikTok, Twitter. - Create automated Dashboards to see relevant information through Looker Studio.

Hello! I am a graphic designer with 5+ years of experience in a diverse range of design work. My skills and experience range from content marketing, video edition and creation, flyers, photo editing to more extense projects like branding and logos. I have worked at marketing agencies as a full-time designer but also with start-ups as a freelancer. My pros: ✅ Available 7 days a week ✅ On-time delivery & responsable ✅ Proficiency in Adobe Suite (Specially Photoshop, Illustrator & After Effects) ✅ Available for one-time projects or long term positions ✅ Client satisfaction I believe in creating original, engaging design solutions that help your project or brand shine. Let's work together!

I am a seasoned market research professional with +10 years of experience in analyzing market trends, consumer behavior, and competitive landscapes. I worked in BofAML's Equity Research and in a Private Equity Hedge Fund, where I gained plenty of experience on how to do deep market research. Key Skills and Expertise 🎯 Market Analysis: Proficient in conducting thorough market assessments, including sizing (TAM, SAM, SOM), segmentation, and growth projections. 🎯 Competitor Intelligence: Skilled at dissecting competitors’ strategies, identifying gaps, and recommending countermeasures. 🎯 Strategic Recommendations: Capable of translating research findings into actionable recommendations for clients. 🎯 Feasibility Analysis: Expert in evaluating the practicality and potential success of new projects or business ideas. 🎯 Business Planning: Experienced in crafting detailed business plans that outline strategies for growth, financial projections, and market positioning. 🎯 Data Visualization: Experienced in creating visually compelling reports and pitch decks to present to investors, management, etc. Why Should We Work Together? Data-Driven Approach: I believe in letting data guide decisions, ensuring accuracy and reliability. Collaborative Mindset: I work closely with clients to understand their unique needs and tailor research accordingly. Just see some of my reviews to get a sense of how I work. Global Perspective & Industry Agnostic: Having worked with clients from all industries, I bring a global and cross-market outlook to every project. Past projects include Tech, SaaS, healthcare, e-commerce, and Gaming. Let’s Connect! Whether you need market segmentation, competitive analysis, or consumer insights, I’m here to help. Feel free to reach out for a detailed chat or to explore potential collaborations. Looking forward to working together! 🚀 Some of the feedback on my work on Upwork: ⭐⭐⭐⭐⭐ - "Martina was extremely responsive and quick to understand our business in a very nascent and technical field. She conducted an astonishing amount of research in just a few days on our behalf and was very flexible in making changes to the deliverable." ⭐⭐⭐⭐⭐ - "Martina is excellent at what she does, very skilled, dedicated, honest and she will always go for the extra mile advising the best to her client. Martina's communication was top-notch, she met all deadlines, and her skills were strong."

Hi! I'm Manuel Adan, a dedicated digital designer with a relentless pursuit of excellence in conceptualization and brand development. My expertise lies in transforming ideas into visually stunning, memorable brand experiences that resonate with your audience. At the core of my design philosophy is the belief that simplicity is the ultimate sophistication. I specialize in creating designs that not only captivate but also endure the test of time. By seamlessly blending innovation and minimalism, I ensure that every element serves a purpose, contributing to a brand's narrative. With a keen eye for detail and a commitment to understanding the essence of each brand, I bring a unique touch to brand development. Whether you are a startup looking to establish your identity or an established business aiming for a rebrand, my goal is to elevate your brand presence with designs that stand out and leave a lasting impression. Collaboration is at the heart of my process. I believe in building strong partnerships with my clients, working closely to understand their vision, values, and goals. This collaborative approach ensures that every design not only meets but exceeds expectations, creating a visual language that resonates with the target audience. My offered services: -Creative Graphics Designs for Print and Web -Clipping path/Background Removal -Image Editing/Retouch/Manipulation -Brand development -Business Cards -Brochures/Flyers/Posters -Infographic Let's Create Together!

I build production-grade AI systems: LLM applications, RAG pipelines, AI agents, graph-based knowledge systems, and the backend infrastructure required to make them reliable. I’m a senior software engineer with 20 years of professional experience across fullstack development, distributed systems, real-time applications, cloud infrastructure, and complex integrations. Over the last several years, my work has focused on LLM infrastructure, LangChain/LangGraph, OpenAI APIs, semantic systems, RDF/JSON-LD, Neo4j, vector search, and production AI workflows. My strength is not just building AI demos. It is turning ambiguous product ideas into maintainable, scalable systems with clear architecture, reliable data flow, strong backend foundations, and production-ready implementation. Recent work includes: architecting AI orchestration systems with LangGraph, building RAG pipelines with structured retrieval and tool execution, designing graph-based knowledge systems using RDF, JSON-LD, and Neo4j, creating scalable event-driven backends on AWS, developing real-time AI-powered applications, integrating complex third-party APIs and data sources, improving reliability, performance, and maintainability of existing systems. Clients typically bring me in when they need: AI agents and autonomous workflows, Retrieval-Augmented Generation, LangChain/LangGraph architecture, LLM orchestration and tool execution, knowledge graphs and semantic data models, graph and vector-based retrieval systems, AI workflow automation, scalable Node.js/TypeScript backends, real-time and event-driven systems, AWS serverless and cloud-native infrastructure, technical leadership on complex or ambiguous projects. I have worked exclusively as a full-time freelancer for more than 10 years. I’m used to taking ownership, communicating clearly, adapting quickly to existing teams, and delivering reliable systems without heavy supervision. Best fit: complex AI/backend projects where architecture, reliability, and long-term maintainability matter more than quick demos. ⸻ Core Expertise AI & LLM Systems: LangChain, LangGraph, LangSmith, OpenAI APIs, AI agents, tool orchestration, RAG pipelines, vector search, structured outputs, prompt engineering, streaming LLM applications, AI workflow automation. Knowledge Graphs & Semantic Systems: RDF, JSON-LD, Neo4j, graph databases, semantic data modeling, knowledge graph architecture, graph and vector retrieval, entity modeling, data integration. Backend & Infrastructure: Node.js, TypeScript, Python, NestJS, Express, Koa, GraphQL, REST APIs, WebSockets, PostgreSQL, Redis, DynamoDB, Elasticsearch, RabbitMQ, AWS, Docker, Kubernetes, Terraform. Frontend: React, Next.js, Redux, Apollo GraphQL, Relay, Storybook, real-time collaborative interfaces. ⸻ Technology Stack TypeScript, JavaScript, Python, Node.js, React, Next.js, NestJS, Express, GraphQL, REST, WebSockets, PostgreSQL, MongoDB, Redis, DynamoDB, Elasticsearch, RabbitMQ, AWS Lambda, API Gateway, S3, IAM, CloudFormation, Docker, Kubernetes, Helm, Terraform, LangChain, LangGraph, LangSmith, OpenAI APIs, RDF, JSON-LD, Neo4j, vector search, Jest, Cypress, Selenium, Puppeteer.

Full-time freelancer with more than 8 years of experience in the Administrative Area, specialized as Administrative Assistant/ Customer Service/ Data Entry/ Translation. My main objective is to make everything easy for you. I’m Detail-orientated, Self-motivated, Easy to work with, Goal-driven with great communication skills, and strong values. Over the past years, I have worked with individuals and businesses, creating a great impact and value. From and through these experiences, I have developed exemplary skills including but not limited to; Key Characteristics/Skills: Administrative support/ Customer Service/ Data entry/ Translation/ Inventory Management / Listing Management/ Order Processing / Order Fulfillment/ Inbound Inquiries/ Shipping Label/ Drop Shipping/ Multitasking/ Following Procedure/ Time Management/ Virtual Assistant/ Multiple Email Inbox Handling/ Call Handling/ Answering Product Questions / Internet Research/ Scheduling / File Management / Accounting/ Bookkeeping/ Spanish. Software/Applications/Websites: Microsoft Office/ Google Suite/ QuickBooks/Trello/ Asana/ Instagram/ Facebook/ Dropbox/ Zoom/ Photoshop/ Amazon/ Walmart/ Shopify/ WordPress. Also, I am very much open to tasks that offer room for growth and opportunities to gain additional skills. Thank you for your interest and consideration.