Top Tech Startups in Ireland in 2027
50 results total - Page 1 of 5
- B2B
- Public StagePublicly traded company
- Top InvestorsThis company has received a significant amount of investment from top investors
- 4.6Highly ratedKlaviyo is highly rated on Glassdoor, with 4.6 out of 5 stars
- 4.5Work / Life BalanceEmployees rate Klaviyo 4.5/5 on Glassdoor for work / life balance
- 4.6Strong LeadershipEmployees rate Klaviyo 4.6/5 on Glassdoor for faith in leadership
- Website
- https://www.klaviyo.com/
- Employees
- 1001-5000
Klaviyo (NYSE: KVYO) is the B2C CRM. Powered by its built-in data platform and AI, Klaviyo combines marketing automation, analytics, and customer service into one unified solution, making it easy for businesses to know their customers and grow faster. Klaviyo (CLAY-vee-oh) helps over 183,000 brands like Mattel, Glossier, Daily Harvest, and Liquid Death deliver 1:1 experiences at scale, improve efficiency, and drive revenue.
- Industries
Jobs
- B2B
- Public StagePublicly traded company
- Top InvestorsThis company has received a significant amount of investment from top investors
- 4.7Highly ratedMongoDB is highly rated on Glassdoor, with 4.7 out of 5 stars
- 4.2Work / Life BalanceEmployees rate MongoDB 4.2/5 on Glassdoor for work / life balance
- 4.6Strong LeadershipEmployees rate MongoDB 4.6/5 on Glassdoor for faith in leadership
- Website
- http://www.mongodb.com
- Employees
- 5000+
- Locations
- Atlanta, Austin, Chicago, New York City, Philadelphia, San Francisco, Palo Alto, London, Toronto, Amsterdam, Melbourne, Paris, Bengaluru, Berlin, New York, Sydney, Bellevue, Tokyo, Dublin, Vienna, Plano, Woburn, Lombard, Alcobendas, München, Frankfurt am Main Süd, Milano, Álvaro Obregón, Gurugram
MongoDB is the leading modern, general purpose database platform, designed to unleash the power of software and data for developers and the applications they build. Headquartered in New York, MongoDB has more than 15,000 customers over 100 countries. The MongoDB database platform has been downloaded over 60 million times and there have been more than one million MongoDB University registrations.
- Industries
Jobs
- B2B
- Scale StageRapidly increasing operations
- Top InvestorsThis company has received a significant amount of investment from top investors
- Valuation $1B+This company has a valuation of $1B or more
- 4.4Highly ratedPantheon Platform is highly rated on Glassdoor, with 4.4 out of 5 stars
- 4.4Work / Life BalanceEmployees rate Pantheon Platform 4.4/5 on Glassdoor for work / life balance
- 4.3Strong LeadershipEmployees rate Pantheon Platform 4.3/5 on Glassdoor for faith in leadership
- Website
- https://pantheon.io/
- Employees
- 51-200
- Locations
- San Francisco
We build best-in-class WordPress and Drupal sites with agile workflows, scalable infrastructure, and a lightning-fast content delivery network. We run your sites on the fastest WebOps Platform on the planet. This includes our unrivaled speed, uptime, and scalability make our high-performance WebOps platform the best place to host WordPress and Drupal sites. We are the only hosting platform to include fully managed and free HTTPS certificates, automated backups, and one-click updates for all WebOps platform plans.
- Industries
- Application PlatformsWeb CMS
Jobs

LILT
Actively Hiring
- B2B
- Growth StageExpanding market presence
- Top InvestorsThis company has received a significant amount of investment from top investors
- 4.1Highly ratedLILT is highly rated on Glassdoor, with 4.1 out of 5 stars
- Growing fastShowed strong hiring growth in the past month
- 4.1Strong LeadershipEmployees rate LILT 4.1/5 on Glassdoor for faith in leadership
- Website
- http://lilt.com/
- Employees
- 51-200
- Locations
- Boston, Indianapolis, New York City, Washington DC, San Francisco, London, Berlin
LILT is a language translation services and technology company. We're building the next generation of localization, making it possible for every organization to communicate with their customers in the language of their choice through LILT's high-quality, scalable, and affordable translation services. We recruit the world's best human translators and equip them with our software, allowing them to translate better and faster than ever. By combining human expertise and machine efficiency in a complete enterprise localization solution, we can deliver technology-enabled translation services to our customers. Lilt is backed by some of the world's leading investors including Sequoia Capital, Intel Capital, and Redpoint. Our customers include some of the largest Fortune 500 companies in the world who rely on Lilt every day to provide more personal customer experiences in 300+ languages. Our team is headquartered in the Bay Area with additional hubs in Indianapolis, Washington DC, Berlin, Dublin, and the UK.
- Industries
Jobs

NextRoll
Actively Hiring
- Top 10% of respondersNextRoll is in the top 10% of companies in terms of response time to applications
- Responds within two weeksBased on past data, NextRoll usually responds to incoming applications within two weeks
- B2B
- Scale StageRapidly increasing operations
- Top InvestorsThis company has received a significant amount of investment from top investors
- Website
- https://www.nextroll.com/
- Employees
- 501-1000
- Locations
- Boston, Chicago, New York City, San Francisco, Salt Lake City, Sydney, Dublin
NextRoll is a leading marketing technology company that empowers businesses to drive sustainable growth while building trusted connections with their audiences. Built on nearly two decades of AI and data expertise, NextRoll delivers its solutions through AdRoll, its flagship brand and connected advertising platform. The AdRoll platform brings together two powerful offerings: the AdRoll product, which helps brands generate awareness, deepen engagement, and drive measurable revenue through AI-powered multi-channel campaigns; and AdRoll ABM, a full-funnel account-based marketing product that unifies buyer insights, predictive AI, and multi-touch advertising to accelerate pipeline and revenue for B2B teams. Together, these solutions give marketers the clarity, efficiency, and performance they need to grow with confidence. NextRoll is a privately held company headquartered in San Francisco, CA.
- Industries
Jobs
- B2C
- Scale StageRapidly increasing operations
- Top InvestorsThis company has received a significant amount of investment from top investors
- YC FundedStartup funded by Y Combinator
- Valuation $1B+This company has a valuation of $1B or more
- Employees
- 201-500
- Locations
- Washington DC, San Francisco
Rocket Money (formerly known as Truebill) is a leading personal finance app with a mission to empower people to live their best financial lives. We offer our 3.4 million members a unique understanding of their finances and a suite of valuable services that save both time and money -- ultimately giving them a leg up on their financial journey. Members can manage their subscriptions, lower their bills, build budgets and automatically set aside money to reach their savings goals. We've saved our members $245 million and counting. In late 2021, we were acquired by Rocket Companies (NYSE: RKT) for $1.275 billion with the goal of creating a centralized destination for consumers to manage their entire financial lives. As paying premium members more than doubled year-over-year in July 2022, we announced our new name, Rocket Money. At Rocket Money, we believe we can do our best work operating as a team. We are committed to using our experience at work to support our own and each other's personal growth journeys. If you are someone who enjoys solving hard problems, likes collaborating and is passionate about our mission; let's talk. We hire from all industries and look for a diverse set of experiences in our talent. To see our open roles go to rocketmoney.com/careers. We're founded by successful veteran entrepreneurs and are backed by YCombinator, Social Capital, and other great investors.
- Industries
Jobs

Smartly.io
Actively Hiring
- Scale StageRapidly increasing operations
- 4.7Highly ratedSmartly.io is highly rated on Glassdoor, with 4.7 out of 5 stars
- 4.6Work / Life BalanceEmployees rate Smartly.io 4.6/5 on Glassdoor for work / life balance
- 4.4Strong LeadershipEmployees rate Smartly.io 4.4/5 on Glassdoor for faith in leadership
- Website
- http://smartly.io
- Employees
- 501-1000
Smartly is the AI-powered advertising technology company transforming ad experiences for brands and their consumers. Our comprehensive advertising platform seamlessly integrates the capabilities of media, creative, and intelligence to power more than 800 billion impressions and generate more than 300 billion creatives annually, delivering tangible business outcomes for brands and advertisers. Smartly is the only company in the industry recognized as a Leader in The Forrester Wave: Creative Advertising Technologies with PwC validating the results it delivers for brands. We manage creative and media for 700+ brands worldwide and $6B in ad spend across the largest media platforms, including Facebook, Google, Instagram, Pinterest, Snap, and TikTok. Our end-to-end technology, unmatched access to media platforms and exceptional customer service help Fortune 500 brands to reach and engage consumers and learn what performs best.Smartly is a multinational and diverse team of 750+ Smartlies from 60+ nationalities, working in 13 countries. Together, we want to create and maintain an inclusive environment where everyone feels respected and heard. Our Diversity, Equity & Inclusion approach is at the heart of it.
- Industries
- Ad TargetingSocial Media Advertising
Jobs

Intercom
Actively Hiring
- B2B
- Scale StageRapidly increasing operations
- Top InvestorsThis company has received a significant amount of investment from top investors
- Valuation $1B+This company has a valuation of $1B or more
- Website
- http://www.intercom.com
- Employees
- 501-1000
- Locations
- Chicago, San Francisco, London, Sydney, Dublin
Intercom is the world’s first customer platform helping internet businesses accelerate growth. Thanks to the internet, the way people communicate is drastically different than it was 10, even 5 years ago. Messengers like WhatsApp have become the preferred mode of communication in every aspect of consumers’ lives, and now that switch is happening with businesses too. Intercom builds a suite of messaging-first products that all modern internet businesses can use to accelerate growth across the customer lifecycle- from acquisition, to engagement, and support. Today more than 25,000 businesses, including New Relic, Sotheby’s, and Shopify, use Intercom to connect with a billion unique people worldwide.
- Industries
- Customer Support Tools
Jobs

CarGurus
Actively Hiring
- B2C
- Public StagePublicly traded company
- 4.1Highly ratedCarGurus is highly rated on Glassdoor, with 4.1 out of 5 stars
- 4.1Work / Life BalanceEmployees rate CarGurus 4.1/5 on Glassdoor for work / life balance
- Website
- http://www.cargurus.com
- Employees
- 501-1000
CarGurus (cargurus.com) is an online auto community that helps consumers research and shop for cars. Our free listings search tool analyzes prices of millions of available listings on the fly, so you can quickly find the best local deals from the best rated dealers. CarGurus was founded by Langley Steinert, co-founder and former Chairman of TripAdvisor.
- Industries
- Comparison ShoppingProduct SearchPrice ComparisonClassifieds
Jobs
- B2C
- B2B
- Public StagePublicly traded company
- Top InvestorsThis company has received a significant amount of investment from top investors
- Website
- http://www.squarespace.com
- Employees
- 501-1000
- Locations
- New York City, West New York
Squarespace makes beautiful products to help people with creative ideas succeed. Our platform empowers millions of people — from individuals and local artists to entrepreneurs shaping the world’s most iconic businesses — to share their stories and create an impactful, stylish, and easy-to-manage online presence.
- Industries
- PublishingBlogging PlatformsWeb CMS
Jobs
Didn't find the job you wanted in this list of startups?
Search for your role at over 30,000+ startups on Wellfound, for free.
- 13,378 jobs in Design
- 76,801 jobs in Engineering
- 12,022 jobs in Marketing
- 29,426 jobs in Sales
& thousands more job opportunities for all other roles
Already have a Wellfound profile?

Can’t find your company? Neither can top tech talent.
Join our community and build your dream team.




