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Senior Software Engineer - Python, Data Engineering, AI

Zenoti

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What engineering roles keep asking for: AWS (16%), Python (14%) — counted across their open postings here.

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Preparing for this interview

Interviews for engineering roles keep coming back to AWS, Python. Practise those questions before you sit with Zenoti.

Questions you are likely to be asked

  1. Why do you want to join Zenoti?
  2. What is your experience with Databricks? Tell me one thing you learned the hard way.
  3. Walk me through a model you built, from the data to how it was used.
  4. How did you know your model was actually good, and not just good on your test set?
  5. Tell me about a time the data was messy or wrong. What did you do?

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Zenoti provides an all-in-one, cloud-based software solution for the beauty and wellness industry. Our solution allows users to seamlessly manage every aspect of the business in a comprehensive mobile solution: online appointment bookings, POS, CRM, employee management, inventory management, built-in marketing programs and more. Zenoti helps clients streamline their systems and reduce costs, while simultaneously improving customer retention and spending. Our platform is engineered for reliability and scale and harnesses the power of enterprise-level technology for businesses of all sizes

Zenoti powers more than 30,000 salons, spas, medspas and fitness studios in over 50 countries. This includes a vast portfolio of global brands, such as European Wax Center, Hand & Stone, Massage Heights, Rush Hair & Beauty, Sono Bello, Profile by Sanford, Hair Cuttery, CorePower Yoga and TONI&GUY.

Our recent accomplishments include surpassing a $1 billion unicorn valuation, being named Next Tech Titan by GeekWire, raising an $80 million investment from TPG, ranking as the 316th fastest-growing company in North America on Deloitte’s 2020 Technology Fast 500™. We are also proud to be recognized as a Great Place to Work CertifiedTM for 2021-2022 as this reaffirms our commitment to empowering people to feel good and find their greatness. To learn more about Zenoti visit: https://www.zenoti.com

 

 


What you'll do
• Design, build, and operate batch and incremental ETL/ELT pipelines in Python (Glue Python-shell, PySpark, AWS Batch/Docker, Lambda).
• Model curated and Iceberg tables; write and tune Trino/Athena SQL; own partitioning, compaction, and cost/performance of the lake.
• Build ingestion from external APIs (Salesforce, Adyen, Intercom, Jira, New Relic, etc.) with incremental anchors, retries, and idempotent writes.
• Extend the data-quality framework and anomaly-detection checks; own alerting and on-call for pipeline health.
• Lead workstreams on the Databricks-on-Azure lakehouse: Delta Lake tables, Databricks Workflows/Jobs, Unity Catalog, and migration of existing curation logic.
• Ship via PRs with tests, infra-as-code (CloudFormation / Terraform), and CI/CD; participate in code review and design reviews.
• Partner with Product, Finance, and Customer Success analysts on metric definitions; expose datasets to QuickSight and to the AI/MCP layer with clear, documented semantics.
• Mentor junior engineers and raise the bar on engineering practices (testing, observability, documentation).

Must have
• 5-7 years of data engineering in production: building, deploying, and operating pipelines that other teams depend on daily. Analyst, BI-developer, or drag-and-drop ETL-tool-only experience does not count toward this.
• Strong Python (3.x): pandas/pyarrow, packaging, virtual envs, writing testable modules and shared libraries — not just notebooks.
• Apache Spark / PySpark at scale: DataFrame API, partitioning, joins/skew, shuffle tuning, reading/writing Parquet.
• Advanced SQL on a distributed engine (Trino/Athena, Spark SQL, Databricks SQL, BigQuery, Snowflake, or Redshift): window functions, CTEs, incremental/merge patterns, query-plan-level tuning.
• Lakehouse fundamentals: columnar formats (Parquet), partitioning strategies, and hands-on experience with at least one open table format — Apache Iceberg or Delta Lake (schema evolution, time travel, compaction/OPTIMIZE, MERGE INTO).
• Cloud data platform on AWS or Azure — at minimum object storage (S3/ADLS), serverless or managed compute (Glue/EMR/Lambda or ADF/Synapse/Functions), a catalog (Glue Data Catalog / Unity Catalog / Hive), and IAM/RBAC basics.
• Orchestration of DAG-based workflows with dependency management, retries, and failure alerting (Step Functions, Airflow, Databricks Workflows, Dagster, or equivalent).
• Incremental ingestion from REST APIs and databases: pagination, rate limits, watermark/anchor-based CDC, idempotent upserts, backfill design.
• Git + PR-based workflow + CI/CD — you've shipped through a review gate and a promotion path (dev → qa → prod) and can debug a failing build.
• Data quality & observability mindset: row-count/freshness/schema checks, alerting on failures, and root-causing a bad number in a dashboard back to its source.
• Clear written communication: design docs, runbooks, PR descriptions that a reviewer can follow.

Good to have
• Databricks hands-on (any cloud): Delta Live Tables / Lakeflow, Unity Catalog, Workflows, Photon, cluster/SQL-warehouse sizing, Databricks Asset Bundles. Databricks Data Engineer Associate/Professional certification is a plus.
• Azure data stack: ADLS Gen2, Azure Data Factory, Azure Key Vault, Entra ID service principals, Azure DevOps or GitHub Actions for deployment.
• AWS depth: Glue (Python-shell and Spark), Athena v3/Trino internals, Iceberg on Athena, Step Functions, Batch, ECR, CloudFormation, CodeBuild/CodePipeline, Secrets Manager.
• Infrastructure as code: CloudFormation, Terraform, or Bicep.
• Docker for packaging batch jobs; basic familiarity with .NET-based jobs coexisting in a Python pipeline.
• Migration experience — moving pipelines/data between clouds or from a hand-rolled lake to a managed lakehouse, including parity validation.
• Streaming/near-real-time: Kafka, Kinesis, Event Hubs, Spark Structured Streaming.
• Relational sources: SQL Server / MySQL extraction (pyodbc, CDC), reverse-ETL back into an application DB.
• BI serving: QuickSight, Power BI, or Tableau — dataset design, row-level security, SPICE/import vs direct query trade-offs.
• AI/LLM data surfaces: exposing governed datasets to agents via MCP or similar, vector stores (Pinecone), metadata/catalog curation for LLM consumption, dbt-style semantic modeling.
• Statistics for data quality: anomaly detection, churn/adoption scoring, or similar analytical pipelines.
• SaaS-domain familiarity: subscription billing (Zuora), payments (Adyen), CRM (Salesforce), or support/telephony data (Intercom, Gong, RingCentral).
• Experience mentoring or leading a small pod of engineers.
 

Zenoti provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws. This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation and training.

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Listed on greenhouse · posted 2026-09-29. ApplySarthi collects openings and links to application pages; the role is advertised by Zenoti, not by us.