Semrush is a brand visibility platform, empowering marketers to command their online presence and create measurable impact. We unify SEO authority and AI visibility, so brands are found, cited, and chosen everywhere search happens. That’s how Semrush gained the trust of over 28 million users—from scaling startups to Fortune 500 companies.
Here, you own the way you work, but we move as one unbeatable team.
We don’t just lead the market, we’re busy creating the world where Semrush is an unfair advantage for every marketer.
We move fast in ways to help you grow. Here, you have room to experiment, keep what works, and learn quickly from what doesn’t.
Ready to share our ambition and make an impact? Then, this role may be for you.
About the role
Build and improve LLM- and NLP-based systems used in AI Search optimization products
Design evaluation frameworks and benchmarks for LLM outputs, prompts, and model behavior
Work on brand extraction, domain mapping, entity extraction, and related algorithmic tasks
Optimize LLM pipelines for quality, cost, throughput, and reliability
Write clean, production-quality Python code
Collaborate with Product, Engineering, and other Data Scientists to turn product problems into working technical solutions
Examples of our projects:
Brand Extraction and Domain Mapping – extracting brand names, mapping corresponding domains, and other relevant entities from LLM-generated responses
LLM quality evaluation and optimization – building benchmarks to evaluate prompt and model quality, while improving throughput, latency, and cost
Algorithm development – designing and improving algorithms for product aliases, brand hierarchies, and other domain-specific problems
About you
Move together. Raise the bar. Learn fast—grow faster. That’s the default. And here’s what else is needed to succeed in this role:
Hard Skills:
5+ years of experience as a Data Scientist, Machine Learning Engineer, or in a similar role
Strong knowledge of machine learning, statistics, and classical NLP techniques
Strong Python and SQL skills
Practical experience working with LLMs or LLM-based systems
Understanding of how to evaluate model quality using datasets, benchmarks, or experiments
Ability to write clean, maintainable, and reliable code
Ownership mindset and ability to work with ambiguous product problems
Soft Skills:
You care about delivering working solutions, not just experiments
You balance execution speed with code quality, reliability, and maintainability
You communicate clearly and collaborate well across Data Science, Product, and Engineering
Not required, but a plus
Hands-on experience with LLM PEFT (Parameter-Efficient Fine-Tuning) methods
Experience with RAG, AI agents, or agent-based systems
Experience deploying ML or LLM-based solutions in production
Experience with GCP, Vertex AI, or GitLab CI
Experience with asynchronous Python, high-throughput API calls, or large-scale data processing
Experience with monitoring, experiment tracking, or reproducible research practices
About the team
We are a Data Science team focused on LLM- and NLP-powered products for AI Search optimization. We work on AIO, AI Summarization, Brand Extraction and Domain Mapping, building AI-driven solutions for SEO analysis, entity extraction, and domain understanding.
Our stack:
Python
Google Cloud Platform
ClickHouse, PostgreSQL
ClearML, Docker, LangFuse, DVC
LLM APIs: OpenAI, Google, Anthropic, Perplexity
About the perks
Unlimited PTO
Hobby & team building budget allowance
Employee Support Program
Loss of family member financial aid
Employee Resource Groups
A little more about us
Semrush is the leading brand visibility platform, empowering marketers to command their online presence and create measurable impact.
Built on the industry’s most expansive proprietary dataset, Semrush delivers AI-driven insights across GEO, SEO, Agentic Search Optimization, content marketing, paid media, and social strategy. The company was founded in 2008 and is headquartered in Boston, MA with a global presence across North America, Europe and Asia.
We’ve built something people are proud to be part of. And the awards agree: Great Place to Work, DEI Workplace, Diversity Champion Award, International Inclusion Award, Most Women Friendly Employers, Best Place for Working Parents. All thanks to 1700+ employees who build the company every day.
About our Diversity, Equity, and Inclusion commitments
Semrush is an equal opportunity employer. Building a better future for marketers around the world unites people from all backgrounds. Even if you feel that you don’t 100% match all requirements, don’t be discouraged to apply! We are committed to ensure that everyone feels a sense of belonging in the workplace.
We do not discriminate based upon race, religion, creed, color, national origin, sex, pregnancy, sexual orientation, gender identity, gender expression, age, ancestry, physical or mental disability, or medical condition including medical characteristics, genetic identity, marital status, military service, or any other classification protected by applicable local, state or federal laws.
Ready to be a part of this mission? Join us!
Carmen Sánchez de Muniáin Muro
Talent Acquisition Specialist
At Semrush, we take a serious and comprehensive approach to hiring new people. We welcome those who are professionals in their field and passionate about their work to join our team.
A “five-minute interview” or “get a job in three clicks” approach is not the way we work.
During the interview, we ask candidates to talk about themselves and their background in detail. We try to discover the most important aspects about the way someone works and their personality before a job offer is made.
Once the resume is received it will be reviewed by a member of the Talent Acquisition team. We try to provide feedback within three working days.
Flexible approach for an interview format
In order for the online meetings to be productive, we suggest following these tips to make sure you are set up well:
- Join the interview from a laptop or desktop computer (not a smartphone). You may need to print something or present your screen during the interview.
- Please turn on your camera. Visual communication is especially important for us.
- Choose a quiet place to talk. Attending an interview from the street is not a good idea.
- Keep your phone at hand in case there are technical issues that mean we have to continue the interview by direct call.
Product & Tech
Engineers, data specialists, product managers, and product designers work closely together as one team at Semrush. Everyone shares a strong product mindset—thinking not only about how things are built, but about the value they create for our customers.
Our P&T teams are based across most Semrush office locations—in Spain, Germany, the Netherlands, Poland, Cyprus, the Czech Republic, Serbia, and even Vietnam! As the name suggests, they all work on creating and developing Semrush products.
There’s a dedicated branch focused on developing new products, another driving growth strategies & innovation, and a third responsible for technical excellence. Importantly, a separate team oversees product operations to ensure all processes run smoothly. This structure helps us stay focused while keeping our finger on the pulse, and improve our products in line with the constantly evolving tech environment.
A transparent career framework supports our colleagues in deepening their expertise and developing into Staff and Principal roles. For those eager to lead people and teams, management paths are also available. For instance, there’s a possibility to become a Tech Lead Manager (TLM) within the engineering scope where you’ll be able to combine team leadership with hands-on technical work.
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