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Applications open Full-Time Job

Software Engineer (Python/Go, Infrastructure)

Sauce Labs

  • Gurugram, India
  • Competitive Package
  • Fresher (0-1 Yrs)
  • Posted Yesterday
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About the role

Location - Hybrid

This is a hybrid role based out of our Gurugram, India office, 3 days in the office, 2 days remote.

About Us

Sauce Labs is the world’s largest full-lifecycle, test automation platform, and the company behind Selenium. Trusted by 80% of the world’s top ten largest financial institutions and over 300,000 enterprise users, Sauce Labs provides the only AI platform capable of turning business intent into autonomous testing and quality assurance. With a proprietary dataset of 8.7 billion test runs, Sauce Labs empowers the Fortune 2000 to bridge the gap between AI-driven code generation and enterprise-grade software quality.

Learn more at http://saucelabs.com.

Release Assurance at the Speed of AI | Meet the new Sauce Labs

The Role

As a Software Engineer in the Platform Services team, you will be responsible for maintaining and improving core architecture for applications developed in the company. Feature teams implement new ideas and improve existing ones based on the vision of the Product Team and feedback from our customers. Platform Services has high visibility and importance within the company as it’s job is to provide common foundations for those teams to build on, merge and deployment strategy, monitoring, and give technological guidance to developers throughout the company.

Responsibilities

  • Design, build and operate backend services for authentication, authorisation and account management.
  • Model multi-tenant account structures — organisations, teams, membership and roles — and keep the model correct as the product grows.
  • Design and evolve public and internal APIs, including versioning and backward compatibility.
  • Integrate enterprise identity: single sign-on over SAML and OIDC, and provisioning over SCIM.
  • Build event-driven integrations over Kafka, including schema design and compatibility.
  • Keep services available and fast on the request path, across several regions.
  • Own what you build in production: metrics, tracing, alerting, and on-call for your own services.

Requirements

Languages and frameworks

  • Python 3.12+ — Expert
  • Go 1.23+ — Intermediate
  • FastAPI — Advanced
  • Django and Django REST Framework — Advanced

Datastores

  • MongoDB — Intermediate — document modelling, indexing, schema migrations, and the trade-offs of denormalisation
  • MySQL — Intermediate — schema migrations, transactions, reasoning about query cost
  • Redis — basics
  • LDAP / directory services — basics

Messaging And API Contracts

  • Kafka — basics— consumer groups, partitioning and ordering, idempotent consumption, retries and dead-letter handling
  • REST and OpenAPI — Intermediate

Identity And Access

  • Multi-tenancy modelling — Advanced — organisations, teams, membership and roles; the difference between a hierarchy and a relation, and the consequences of each
  • Token-based authentication, JWT — Advanced — issuing, validating, claims design, expiry and revocation
  • OIDC — Advanced
  • SAML — Advanced
  • Session management — Advanced — where a session lives, how it is inspected and revoked
  • Role-based and attribute-based access control — Advanced
  • SCIM provisioning — Familiarity

Infrastructure And Delivery

  • Docker — Intermediate
  • Kubernetes — Advanced — deploying, inspecting and debugging a service
  • Helm — Intermediate
  • CI/CD pipelines (GitLab CI or equivalent) — Intermediate

Observability

  • OpenTelemetry and distributed tracing — Advanced
  • Prometheus and PromQL — Advanced — diagnosing from metrics, not only reading dashboards
  • Grafana — Advanced
  • Log querying at scale — Advanced

Please note our privacy terms when applying for a job at Sauce Labs.

Sauce Labs is proud to be an Equal Opportunity employer and values diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender identity/expression/status, sexual orientation, age, marital status, veteran status or disability status.

Security Responsibilities At Sauce

At Sauce, we will commit to supporting the health and safety of employees and properties, partnering with internal stakeholders to learn and act on ever-evolving security protocols and procedures. You’ll be expected to fully comply with all policies and procedures related to security at the department and org wide level and exercise a ‘security first’ approach to how we design, build & run our products and services.

Eligibility & process

Who can apply

Employment type: Full-time

Skills & stack

Python Django FastAPI REST APIs MySQL MongoDB Redis Docker

Selection process

Details are shared by the recruiter after shortlisting.

Prep kit

20 resources
Study material 4
Company-specific guides 4
Likely coding questions 4
Round-wise strategy 4
Round 1: Online Assessment (OA) Aptitude, Quantitative Logic & 2 Coding Problems Focus on accuracy and speed. Practice arrays, strings, and standard arithmetic puzzles.
Round 2: Technical Interview 1 Core Tech Stack (Python, Django, FastAPI, REST APIs, MySQL, MongoDB, Redis, Docker) & Live Code Tracing Explain your thought process aloud. Analyze time & space complexities before coding.
Round 3: System Design & Problem Solving Database Schemas, APIs & Architecture Basics Clarify edge cases, diagram schemas cleanly, and discuss scalability trade-offs.
Round 4: HR & Cultural Fit Discussion Sauce Labs Core Values, Learning Agility & Offer Terms Demonstrate passion, strong communication, and readiness for full-time collaboration.
Technical questions 5
What is the difference between WHERE and HAVING clauses in SQL? Answer
Model answer: WHERE filters rows before any groupings are applied, while HAVING filters aggregated groups after GROUP BY has executed.
Explain SQL Window functions: ROW_NUMBER(), RANK(), and DENSE_RANK(). Answer
Model answer: ROW_NUMBER() assigns unique sequential integers. RANK() assigns identical ranks to ties and skips ranks. DENSE_RANK() assigns identical ranks to ties without skipping rank numbers.
How do you handle NULL and missing values during data cleaning in Python/Pandas? Answer
Model answer: Use .isna().sum() to identify missing values. Impute with mean/median using .fillna() or remove with .dropna(subset=[...]) depending on variance impact.
What is the difference between Star Schema and Snowflake Schema in Data Warehousing? Answer
Model answer: Star Schema has denormalized dimension tables directly connected to the central Fact table. Snowflake Schema normalizes dimension tables into sub-dimensions to minimize redundancy.
How do you calculate MoM (Month-over-Month) growth in SQL? Answer
Model answer: Use LAG(revenue, 1) OVER (ORDER BY month) to fetch the previous month's revenue and compute (revenue - prev_revenue) / prev_revenue * 100.
Behavioural & HR questions 3
Why do you want to join Sauce Labs as a Software Engineer (Python/Go, Infrastructure)?
Highlight Sauce Labs's market reputation, recent tech innovations, and how your skills in Python directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Use the STAR method: Situation (project context), Task (what needed solving), Action (specific tools/logic applied), Result (quantifiable positive outcome).
How do you handle strict deadlines or sudden scope changes?
Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.
Sauce Labs Competitive Package
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