Top Tech Startups in Bucharest, Romania in 2027

Altinity is the leading service and software provider for ClickHouse - an open source SQL data warehouse offering industry-leading query speeds on petabyte-scale data. Altinity offers the highest expertise on the market to help customers deploy and run the most demanding analytic applications. We also provide innovative software to manage ClickHouse in Kubernetes, cloud, and bare metal environments.

At pubGENIUS we build software that helps great ideas become real products. We’re a US-based development company founded by a former Microsoft engineer, and we’ve been remote since day one. Our team is fully distributed across 10 countries from the U.S. to Europe, Asia, and Africa and we believe that where you live should never limit where you can build. What sets us apart? Our standards: -We value deep knowledge, strong engineering skills, and clear communication. Our hiring process is intentionally tough we select just 1 out of every 1,200 applicants to make sure we build a team that can consistently deliver great work, fast. What unites us is our passion for technology, our love for clean code, and our commitment to helping startups bring their visions to life. Since 2018, we’ve worked on 80+ projects, supported founders from day zero, and helped raise over $15 million in funding for early-stage startups. Whether you’re building your MVP or scaling your product, we’re here to make it happen with speed, quality, and the care of a real partner. What We Do: - We have a solid and proven track record building: - Web applications:SaaS platforms, e-commerce, healthcare, fintech, e-learning, CRMs, and more. - Mobile apps: high-performing apps on iOS and Android using React Native (plus native integrations). - Fractional CTO: Strategic support to help you choose the right tech stack, set up scalable architecture, and move faster without hiring full-time. Who We Work With: Whether you're in healthcare, e-commerce, education, AI, fintech, or something entirely new, our sharp-minded engineers can tackle any complexity. We don’t limit ourselves by industry we’re here to solve real problems with clean, scalable code. How We Think: We’re trying staying ahead. Every decision we make from architecture to stack selection is designed to ensure that the products we build will stand the test of time and evolve with your business.

Braze is the leading customer engagement platform that empowers brands to Be Absolutely Engaging™. Braze helps brands deliver great customer experiences that drive value both for consumers and for their businesses. Built on a foundation of composable intelligence, BrazeAI™ allows marketers to combine and activate AI agents, models, and features at every touchpoint throughout the Braze Customer Engagement Platform for smarter, faster, and more meaningful customer engagement. From cross-channel messaging and journey orchestration to Al-powered decisioning and optimization, Braze enables companies to turn action into interaction through autonomous, 1:1 personalized experiences. The company has been consistently recognized as a Leader in marketing technology by industry analysts, and was named a G2 “Best of Marketing and Digital Advertising Software Product” in 2026. Braze was also named a 2026 Best Places to Work by Built In, a 2025 America’s Greenest Companies by Newsweek, and a 2025 Fortune Best Workplace in Technology™ by Great Place To Work®. The company is headquartered in New York with 15 offices across the Americas, EMEA, and APAC. Learn more at braze.com.

YOCTO is a lifecycle marketing agency for fast-growing DTC and subscription brands. We run email, SMS and retention programs on Klaviyo and Shopify for global brands. Our mission is to become the #1 lifecycle agency for e-commerce brands in the world, and have fun on the way.

Hello! We're a fully remote team of ∼60 people on a mission to help every creator earn a living. We do that by supporting hundreds of brands in their effort to find local creators around the globe, partner with them and monitor their performance. In the long term, we'll be the control centre creators use to earn a living. With nearly 2000 customers partnering with +10k creators a month, we are well on our way to helping a million creators get paid every single year. ? About our products: Modash's flagship product is discovery and analysis. We allow brands to find influencers all over the world, who reach real, targeted audiences and create impactful, relevant content. We list every creator on Instagram, Tiktok and Youtube. We also offer a monitoring product, which collects content for brands and measures it's performance. Imagine you have 1000 creators globally publishing every day - it's a real pain to keep track of what's happening. In Modash, it's the click of a button. Connecting these two powerful tools are lightweight relationship management functionality so teams can work together to scale their creator partnerships. People love this, because it gets them out of sheets and help keeps things updated in a single place. Some of our up-and-coming projects are in stealth mode. They leverage the power of data, the millions of relationships we're fostering and solve key pay-points related to partnerships and finance. Ask us about them in our intro call!

Insomniac Design is an award-winning digital creative agency founded in 1999, based in D.C.’s historic Blagden Alley. We’re an agile, nimble and innovative team organized by functional areas of expertise — Creative, Technology, Strategy, and Management. With offices in the U.S. and Europe, we’re a global team with diverse experience and cultural backgrounds who consistently strive for excellence. We specialize in human-centered design — with projects and work that includes complex web and mobile builds, digital transformation, branding, visual design, content, video and creative services. We’ve worked in the areas of policy, advocacy, government, foundations, commercial brands, and more — with clients like Brand USA, UNICEF, The World Bank, World Health Organization, Amnesty International, BBC Worldwide, National Endowment for the Arts, Lufthansa Airlines, Adobe, and Google. Insomniac Design’s work has won numerous awards such as W3 Awards, Communicator Awards, and the AIB awards. Beyond the U.S., our work in Asia and Africa has been featured in news and media around the world.

Thor’s Hall is building a performance-based network for creators, publishers, marketers and online communities. We help partners monetize their audiences without having to build the technical infrastructure themselves. Thor’s Hall handles dedicated landing pages, campaign tracking, reporting and partner management while our partners focus on bringing quality traffic through the channels they already understand. Our model is simple: if a partnership generates revenue, everyone involved shares in the results. We currently focus on online gaming and iGaming, with the goal of building a wider network of creators, publishers and growth partners across multiple markets. We are still early, which means the people joining now have the opportunity to help shape how Thor’s Hall grows, test new acquisition strategies and potentially develop long-term partnerships as the network expands.

RZLT is the leading Web3, Crypto & AI Native Marketing Agency. We grow the most disruptive brands in the world. We are a diverse team of 35+ innovators from 10 different countries, speaking 8 languages, united by an unstoppable drive for passion, and disruption. If you're eager to dive into the Web3 landscape and thrive, RZLT is the place for you. Join us and be a part of shaping the future of marketing. Check our job openings here: careers-page.com/rzlt-2?mode=preview