Multithread effectively and personalize outreach to convert deals faster
Elevate social presence and drive business growth from social media
Identify and prioritize high-intent leads, and improve sales effectiveness
Find and connect with ICP attendees, and improve event outcomes
1&1 Internet Development GmbH is a significant software engineering and product development entity associated with IONOS, one of Europe's largest web hosting and cloud service providers. Headquartered in Karlsruhe, Germany, 1&1 Internet Development focuses on creating and enhancing the technologies that power IONOS's diverse portfolio of services, including web hosting, domain registration, website builders, e-commerce solutions, and cloud infrastructure. It plays a crucial role in driving innovation and maintaining the technical excellence of IONOS's offerings for millions of customers worldwide.
Primary software engineering and product development center for IONOS, focusing on web hosting technologies, cloud services, and internet applications.
Modern tech campus located in a key German technology hub, designed to foster agile development and innovation. Includes collaborative workspaces, development labs, and employee-focused amenities.
An engineering-driven culture that emphasizes agile methodologies, innovation, continuous improvement, and collaboration among development teams. There's a strong focus on technical expertise and delivering high-quality digital products.
Serves as a critical R&D and engineering backbone for IONOS, responsible for developing and maintaining core products and services offered to a global customer base. Its location in Karlsruhe leverages a strong local tech talent pool.
While core development for 1&1 Internet Development is heavily concentrated in Germany (Karlsruhe, Montabaur, Berlin), its work supports the global operations of its parent company, IONOS. IONOS serves customers in numerous countries, operates data centers across Europe and North America, and maintains international sales and support offices. Distributed development teams, including those in locations like Romania, contribute to a unified global platform for web hosting, domain registration, cloud solutions, and other digital services.
BrauerstraĂźe 48
Karlsruhe
Baden-WĂĽrttemberg
Germany
Address: IONOS SE, Elgendorfer Str. 57, 56410 Montabaur, Germany
Central hub for German and European operations, strategic R&D, and overall company direction for IONOS.
Address: IONOS SE, Greifswalder Str. 207, 10405 Berlin, Germany
Key R&D center in one of Europe's leading tech cities, attracting specialized talent for advanced technology projects and product development.
Address: IONOS Romania S.R.L., AFI Park Floreasca, Building A, 2nd floor, 169A Floreasca Street, District 1, Bucharest, Romania
Supports global product development initiatives and enhances IONOS's engineering capabilities by tapping into the skilled tech workforce in Eastern Europe.
Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.
As of April 2025, 1&1 Internet Development' leadership includes:
1&1 Internet Development has been backed by several prominent investors over the years, including:
IONOS has focused on strengthening its leadership for continued growth, particularly following its IPO. Key changes in the last year include a new CFO appointment.
Discover the tools 1&1 Internet Development uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.
Employees at 1&1 Internet Development, as part of IONOS, generally use standardized corporate email formats. The most common pattern observed for IONOS employees is [first].[last]@ionos.com.
[first].[last]@ionos.com
Format
achim.weiss@ionos.com
Example
80%
Success rate
IONOS Group Newsroom • May 8, 2024
IONOS Group SE announced sustained revenue growth and enhanced profitability for the first quarter of 2024. This performance was driven by strong results in its Cloud Solutions and Web Presence & Applications segments, leading the company to reaffirm its financial outlook for the full year....more
IONOS Group Newsroom • April 24, 2024
IONOS revealed a strategic collaboration with Partnera aimed at leveraging artificial intelligence and cloud technologies to provide improved services and support for small and medium-sized businesses (SMBs), focusing on facilitating their digitalization and growth....more
IONOS News • March 7, 2024
IONOS launched new AI-powered tools, including an AI Site Generator and AI-driven text creation functionalities within its website builder. These features are designed to assist SMBs in efficiently building and optimizing their online presence and marketing activities....more
See where a company’s workforce is located, by country or region.
View past and recent funding rounds with amounts and investors.
Understand company revenue estimates and financial scale.
Track active roles and hiring trends to spot growth signals.
Discover what a company offers—products, platforms, and solutions.
Get the company’s official SIC and NAICS classifications.
Analyze visitor volume, engagement, and top traffic sources.
Explore LinkedIn, Twitter, and other active social profiles.
Identify top competitors based on similar business traits.
Explore companies in depth — from the tech they use to recent funding, hiring trends, and buyer signals — all in one powerful view.
Highperformr AI helps you surface the right accounts and enrich your CRM with verified company and contact insights, so your teams can prioritize and engage faster.
Thousands of companies, including 1&1 Internet Development, are just a search away.