Workato
Posted 2w ago

Senior Data Scientist

Workato
Sofia, Sofia City Province, Bulgaria
OnsiteFull Time
Responsibilities
  • building models
  • deploying models
  • improving models
Requirements
  • 3+ years in ML/ML engineering or data science
  • Strong Python
  • Hands-on NLP/LLM experience
  • Software engineering fundamentals, and ability to design
  • Deploy, and monitor production ML systems
Technical tools mentioned
PythonNLPLLMAmazon RedshiftSnowflake

Job description

About Workato

Workato delivers enterprise infrastructure for the agentic era, redefining iPaaS and helping enterprises unify data, applications, processes, and AI into a single, governed platform. A leader in Enterprise MCP and trusted by 50% of the Fortune 500, Workato’s cloud-native architecture connects every application, data source, and process to power real-time orchestration at scale. With enterprise-grade security and continuous innovation at its core, Workato provides the trusted foundation for organizations to automate with confidence and operationalize AI across the business. To learn more, visit www.workato.com

Why join us?

Ultimately, Workato believes in fostering a flexible, trust-oriented culture that empowers everyone to take full ownership of their roles. We are driven by innovation and looking for team players who want to actively build our company. 

But, we also believe in balancing productivity with self-care. That’s why we offer all of our employees a vibrant and dynamic work environment along with a multitude of benefits they can enjoy inside and outside of their work lives. 

If this sounds right up your alley, please submit an application. We look forward to getting to know you!

Also, feel free to check out why:

  • Business Insider named us an “enterprise startup to bet your career on”

  • Forbes’ Cloud 100 recognized us as one of the top 100 private cloud companies in the world

  • Deloitte Tech Fast 500 ranked us as the 17th fastest growing tech company in the Bay Area, and 96th in North America

  • Quartz ranked us the #1 best company for remote workers

Responsibilities

We are looking for an exceptional Middle / Senior Machine Learning Engineer / Data Scientist to join our growing AI team. In this role, you will design, build, deploy, and improve ML/LLM-powered services and features that power intelligent automation and AI-driven product experiences across the Workato platform. You will work closely with our Engineering, Product, and Design teams to define and track product metrics and evaluation strategies, design customer-facing experiments and dive deep to provide actionable insights.This role is ideal for someone who combines strong ML/LLM intuition, software engineering skills and a practical mindset for shipping reliable, scalable AI systems.

In this role, you will also be responsible to:

  • Build and improve AI services using LLMs and custom machine learning models for production use cases.

  • Design, develop, and operate ML/LLM systems end-to-end, from prototyping to deployment and monitoring.

  • Write high-quality Python code that is testable, maintainable, and efficient.

  • Improve validation, observability, and performance monitoring for ML services (quality, latency, reliability, cost).

  • Partner cross-functionally with product managers, platform engineers, and other stakeholders to ship AI-powered product capabilities.

  • Evaluate and improve existing implementations by identifying bottlenecks, bugs, and opportunities for optimization.

  • Design controlled experiments to test the features for our AI-based products and perform deep analysis from the results to find actionable insights

  • Contribute to technical design and code reviews, helping raise engineering quality across the team.

  • Experiment and iterate on model behavior, prompting, retrieval, tool use, or orchestration strategies to improve user outcomes.

Requirements

Qualifications / Experience / Technical Skills

  • Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, Statistics, or equivalent practical experience

  • 3+ years of experience in Machine Learning Engineering, Data Science, or a similar role.

  • Strong Python programming skills.

  • Hands-on experience with NLP and/or LLM-based systems.

  • Strong understanding of software engineering fundamentals (testing, code quality, debugging, version control).

  • Ability to work collaboratively in a fast-moving environment and drive projects with ownership.

Nice to Haves

  • Experience with tool-use agents or workflow-aware AI systems.

  • Experience building AI products in enterprise SaaS environments.

  • Experience with A/B testing and statistical significance techniques.

  • Experience with LLMOps/MLOps tooling and practices (monitoring, evaluation pipelines, model rollout, CI/CD).

  • Experience working with modern data warehouses such as Amazon Redshift Snowflake.

(REQ ID: 2898)

About Workato

Enterprise platform for automating business workflows and integrating applications.

Year founded
2013
Employees
1348
Organization type
Private
Latest investment
Raised $200.00M Series E (2021) — led by Battery Ventures
Headquarters
US

Similar jobs

Data Scientist roles near Sofia, Sofia City Province
1mo
Save
Mark Applied
Hide
Senior Data Scientist
Sofia, Sofia City Province, Bulgaria
HybridFull Time
Experian
ExperianLondon Stock Exchange: EXPN: Provides data and analytical tools to manage credit risk.
Experienced data scientist with strong statistics and ML background, production model monitoring, data quality and governance knowledge, and experience with large-scale data platforms.
Python, Spark, Hadoop, NLP
1mo
Save
Mark Applied
Hide
Senior Data Scientist (m/f/x)
Berlin or Wroclaw or Prague or Athens or Budapest or Rome or Lisbon or Bucharest or Belgrade or Sofia or Madrid or Kyiv
RemoteFull Time
GRID
GRID: Esports data platform providing real-time in-game data infrastructure.
5+ YOE5+ years in data science or quantitative research, expert probability and ML knowledge, production-grade Python skills, experience designing backtesting frameworks and working with high-frequency streaming data.
Python, MLFlow, Airflow
1mo
Save
Mark Applied
Hide
Data Scientist
Sofia, /, Bulgaria
OnsiteFull Time
Yettel Bulgaria
Yettel Bulgaria: Provides mobile, fixed-line, and digital telecommunications services in Bulgaria.
Experience or degree in data science/applied ML, proficiency with Python and SQL, knowledge of pandas/scikit-learn/TensorFlow, experience with ML lifecycle and production deployment, fluency in English.
Python, SQL, pandas, scikit-learn, TensorFlow, Google Cloud Platform (GCP), Vertex AI, BigQuery, Airflow, LangChain, Git
1mo
Save
Mark Applied
Hide
Data Scientist
Sofia, /, Bulgaria
HybridFull Time
A1
A1Vienna Stock Exchange: TKA: Provides mobile, fixed-line, internet, and digital television services.
1+ YOE1+ year data science/ML experience, Python and core libraries, SQL, EDA and visualization, familiarity with SDLC/Agile, Git/Jira, and ability to translate business requirements into models.
Python, Pandas, NumPy, Scikit-learn, SQL, Jupyter Notebooks, Matplotlib, Seaborn, Tableau, Microsoft Power BI, Git, GitHub, Jira, SDLC, Agile, Scrum, LLMs, TensorFlow, PyTorch, Spark, Databricks, MLflow, Docker
1mo
Save
Mark Applied
Hide
Data Scientist
Sofia or Varna
HybridFull Time
myPOS
myPOS: Integrated card payment processing and business banking services.
3+ YOE3+ years applied data science experience; strong Python (pandas, numpy), ML (scikit-learn, XGBoost/LightGBM), deep learning (PyTorch/TensorFlow), SQL, BigQuery/GCP; experience shipping models to production and working with LLMs.
Python, pandas, numpy, scikit-learn, XGBoost, LightGBM, PyTorch, TensorFlow, SQL, GCP, BigQuery, MLflow, Weights & Biases, REST APIs, LangChain, LlamaIndex, AutoGen, OpenAI, Anthropic, SHAP, LIME, Airflow, Prefect, Dagster, Kafka, Pub-Sub, Spark
2mo
Save
Mark Applied
Hide
Data Scientist - Predictive Analytics (Sofia, BG)
Sofia, Sofia City Province, Bulgaria
HybridFull Time
dormakaba
dormakabaSIX Swiss Exchange: DOKA: Manufactures and services building access and security systems.
2+ YOEMaster's in a quantitative field required; 2+ years in data science or predictive analytics; strong forecasting and demand planning expertise; experience with SAP, Salesforce, Python, Microsoft Azure, Microsoft Fabric; Databricks a plus; fluent English.
SAP, Salesforce, Python, Microsoft Azure, Microsoft Fabric, Databricks
2mo
Save
Mark Applied
Hide
Data Scientist (f/m/d) @ A1 Competence Delivery Center
Sofia, Sofia City, Bulgaria
HybridFull Time
A1 Group
A1 GroupVienna Stock Exchange: TKA: Integrated telecommunications provider of mobile, fixed, and digital services.
3+ YOEData Scientist with Python, ML, and conversational AI experience; fine-tuning models, building data pipelines, and applying NLU and generative AI.
Python, WatsonX, RESTful APIs, NLU, Generative AI, Data Pipelines
2mo
Save
Mark Applied
Hide
Data Scientist (f/m/d) @ A1 Competence Delivery Center
Sofia, Sofia City, Bulgaria
HybridFull Time
A1 Group
A1 GroupVienna Stock Exchange: TKA: Provides telecommunications and digital services in Central and Eastern Europe.
3+ YOEData Scientist with 3+ years experience, Python, ML, NLP, fine-tuning, data pipelines, conversational AI.
Python, Machine Learning, Natural Language Understanding, WatsonX, RESTful APIs