Data Quality Intern - SQL & Validation
What this role pays, in context
This listing pays 25% below the median for Data Engineer roles in India, which sits at ₹25K a month.
Median of 11 other live Data Engineer listings in India on this board that state pay. Roles that do not disclose a salary are excluded rather than counted as zero.
Start with the bad rows
In March a duplicate employer record sent the same rejection email to one candidate four times. Nobody spotted it for nine days. This two month internship exists so that problems like that get caught by a test instead of by a complaint. It runs remote within India, with one short check in each morning.
Your remit
You will profile the core tables, candidates, employers, postings and applications, and write up exactly where the data breaks: missing city values, phone numbers sitting in the email column, applications pointing at postings that no longer exist. Then you turn those findings into automated checks, wire them into the nightly run, and build a simple scorecard so each team can see the health of the tables they own. Fixing the worst offenders at source is part of the job too, not just reporting them.
Who does well here
People who are slightly bothered by inconsistency. You will need SQL, a systematic mind and the confidence to tell a team their data is wrong. There is no experience requirement, final year students are encouraged to apply, and the work is genuinely visible because everything downstream depends on it.
Responsibilities
- Profile the candidate, employer, posting and application tables and catalogue the quality issues
- Write automated data quality checks and add them to the nightly pipeline run
- Build a table level data health scorecard shared with each owning team
- Trace duplicate and orphaned records back to the source systems that created them
- Propose and test fixes for the most damaging quality issues
- Keep a log of incidents and the checks introduced to prevent them recurring
Requirements
- Final year student or recent graduate in a technical or quantitative subject
- Confident writing SQL with joins, aggregation and subqueries
- Basic Python for scripting checks and summarising results
- A methodical approach and willingness to document everything you find
- Comfortable working remotely with one short daily check in
Skills
Benefits
- Monthly stipend covering both months of the internship
- Remote across India with flexible working hours
- Certificate of completion and a written manager reference
- Mentorship from the analytics lead with weekly review sessions
MailerMen
MailerMen runs a verified job board covering startup and product roles across twelve markets, and takes on interns across engineering, data, design and marketing to build it.