Hire the Best Environment Freelancers in Sofia, BG

Hello and welcome to my Upwork profile! 🤝 I am Mariana, a dedicated professional with 8+ years of experience in Content Moderation, Customer Support, QA Testing, and Data Annotation. I’m a native Portuguese speaker and fluent in English and Spanish. I really enjoy working on tasks that require accuracy, attention to detail, and consistency. My experience has taught me how to handle large amounts of information efficiently while meeting strict deadlines. Here’s how I can help your business: •Content Moderation and Platform Safety: Review and manage UGC and AIGC (user and AI-generated content) submissions quickly by identifying spam, abuse, and policy violations while ensuring fair, consistent moderation; Help maintain a safe and respectful online environment across your platforms. •Customer Support: Provide general account management assistance; greet customers in a polite, friendly, and professional manner; offer chat-based support; Resolve complaints with empathy and respect. •Data Annotation: Deliver high-precision data annotation services for AI and machine learning applications, including image, video, and text labeling for optimal model performance. •QA Testing: Test games, websites and applications in various scenarios; write and execute test cases; Provide feedback in a clear and concise manner. If you are looking for a committed and reliable person with demonstrated experience who can provide fast and accurate results, I’m ready to deliver the quality you need and would be glad to be part of your team. Looking forward to working with you!

I am a graduate of ARC Academy for 3d Art and have experience creating, rendering, UV unwrapping and texturing organic and hard-surface models. I've worked on video games being part of a team of skilled individuals and have also worked individually on commissions. With concepts of my own or other people's, I am able to make ideas into reality!

Hello. I have over 9 years of combined software engineering experience with Javascript. 🔹 ReactNative/React/Redux, AngularJS/Angular 🔹 Node.js (Express, Hapi, Loopback) 🔹 Python (Django, Flask) 🔹 MongoDB, Postgres, MySQL 🔹 Serverless, Microservices, Docker, Amplify CLI, GraphQL/Apollo 🔹 Firebase (Authentication, RealtimeDB/Firestore, Functions) 🔹 AWS Lambda, AppSync, RDS, DynamoDB, API Gateway, Cognito, Mobile Hub 🔹 ML & AI - IBM Watson, Amazon Lex, Google Dialog Flow 🔹 Customer Service & Bot - Amazon Connect, Twilio, Nexmo As a full stack developer, I attach importance client's satisfaction of the project. I will be motivated to deliver 100% qualified and speedy product on every project that I'm a part of. Within the past several years, I have worked in several kinds of team environment, owned and operated my own online business, and worked solo as a full time freelancer. With such a diverse background, I am well versed in high end communication skills, good business practices and self-motivated principles for success. Best regards.

AVAILABLE FOR NEW PROJECTS Rendering style that will set your project far apart for your competitors. TOP RATED Talent UpWork Certified (Top 10%) — helping developers & architects sell with stunning 3D imagery. Hello! I am an Architect specialized in Architectural Visualization and 3D Modeling. I have a great experience in Interior and Exterior Real Estate Visualizations for Marketing Purposes. *Huge experience in Australian and American Real Estate Rendering Projects* *Attention to detail* *Ability to understand clearly CAD files, drawings, specs and to create correct 3d models of the properties* *Respect the deadlines* *Rounds of changes until the final version is approved* *Passion to make amazing look of the properties* Technical knowledge - Revit, CAD, Vray, 3D MAX, Photoshop. --- Hope to hear from you, Nikola Monev

I help purpose-driven brands and nonprofits turn ideas into powerful stories that inspire action and build lasting connections. I’m an experienced PR Manager and Social Media Strategist with over 10 years in communications, including 8 years with international humanitarian NGOs. I specialize in public relations, content creation, copywriting, and storytelling that raise awareness, build authentic connections, and drive real impact. I’ve led powerful awareness and fundraising campaigns for causes supporting human rights, refugees, women, and children, helping organizations strengthen their voices and grow their communities. As a freelancer, I partner with small businesses, entrepreneurs, and nonprofits to craft creative brand strategies, manage engaging social media campaigns, and tell stories that truly resonate. My goal is to help you connect with your audience in meaningful ways and make your message impossible to ignore. ✨ Specialties: Social Media Strategy | Creative Copywriting | PR Campaigns | Brand Storytelling | Content Creation | Awareness & Fundraising Campaigns | NGO Communications | Digital Strategy Let’s bring your message to life — and make your brand stand out for all the right reasons.

I am a software (quantitative) developer with 19 years of experience (from which 15 are as freelancer) During the last 12 years I have specialized one and only on implementing betting and trading strategies. Usually in C# or Java, and had one app using Flutter(nice modern web app). In most of the cases I am coding/using NinjaTrader 8 (NinjaScript) and Betfair API NG. Am coding for NT back from the year of 2010 when version 6.5 was still active and stable... And from 2009 am coding Betfair trading and betting algorithms (this was my first job as freelancer). On the second year UI was added, before that it was clear dataprocessing with multi threaded environment, everything running as background service. Later I have specialized in multi threaded data processing, storing and visualization - like ladders, dynamic tables, multi threaded data processing and betting engines - placing 20+ bets/orders in parallel in stand alone threads. Apps that replicate a lot of the functionalities of the popular apps like BetAngel and others. Synchronized separate thread engine for account balance)exposure and PnL processing. etc. etc... 2000++ threads DB engine for reading, decompressing and storing the BF ADVANCED historical files in a database. In practice as powerful the server is - as many threads can be added, currently it "burns" the CPU with 2000 threads, but if the CPU is doubled - the threads can be doubled to 4000+... Am also specialists in odds and data scraping bots (robots) for online bookmakers and auto bet placers (for bookies that do not have APIs) I can write a lot of things about me but it will be long and boring. When we get in touch I will send you a full CV. Best wishes