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Junior Data Engineer

Portless Open · verified Oct 24, 2026
On-site Shenzhen Full-time Junior Data Engineering

At a glance

Junior Data Engineering role at Portless. Shenzhen · full-time.

Pay not stated Data Engineer salary

RoleData Engineering
SeniorityJunior
LocationShenzhen
WorkplaceOn-site
EmploymentFull-time
PostedSep 4, 2026 · 7w ago
Role brief

dataroles summary, based on the employer's posting.

What you'll do

  • Check carrier invoices against internal records, set validation rules, and pursue billing mismatches through resolution
  • Organize customer rate information and run accuracy checks before it feeds into pricing work
  • Help senior engineers test automated workflows while completing daily data queries and validation
  • Load source data into BigQuery, test SQL transformations, document fields, and confirm outputs match source systems
  • Use AI tools for coding, documentation, and reconciliation, then verify results against the underlying data

What you bring

  • A bachelor's degree or higher in computer science, information systems, statistics, or a related discipline
  • Two to three years in data processing, operations, or a related role, with SQL, basic Python, and strong Excel skills
  • Practical use of AI tools for data or engineering work, including writing prompts and checking generated results against source data
  • Careful handling of large datasets, with the ability to spot inconsistencies and maintain data accuracy

Who this fits

This junior role suits someone ready to build technical skills while handling hands-on finance data work and supporting senior engineers. The position is onsite in Shenzhen, China.

From the employer

The Junior Data Engineer supports the Finance department's day-to-day data operations within a 3PL business environment. The primary focus of this role is data processing and verification — including logistics billing reconciliation and customer pricing data preparation — while also assisting senior engineer with the gradual build-out of automated workflows. A foundational technique of programming is expected, with the opportunity to develop technical skills on the job. The role also assists on the build-out of the company's BigQuery data room, and is expected to work AI-first — using AI coding assistants and LLM-based tools as the default approach to day-to-day data work.

  • Billing Verification & Reconciliation: Process and verify logistics carrier invoices; cross-check billing data against system records and internal references; establish validation rules and flag discrepancies and follow up with relevant parties for resolution.
  • Customer Pricing Data Preparation: Assist senior data engineers in collecting, organizing, and maintaining customer rate data; create data quality check rules to support the preparation of customer pricing and perform basic data quality checks to ensure accuracy.
  • Automation Support & Learning: Assist senior data engineers in testing and validating automated workflows; complete daily data query and validation, and proactively learn to take on more technical tasks over time.
  • Ad-hoc Data Tasks: Handle data processing and reporting requests from the Finance department and cross-functional teams as assigned, including data collation, formatting, and basic transformation tasks.
  • BigQuery Data Room Support: Assist the senior data engineer on the BigQuery data room project — loading and staging source data, writing and testing SQL queries and transformation logic, documenting table structures and field definitions, and running data quality checks to confirm that modelled data ties back to the source systems.
  • AI-First Ways of Working: Use AI and LLM-based tools as the default approach to daily work — including AI coding assistants for writing and debugging SQL and Python, and LLM tools for data checks, documentation and reconciliation support. Write and refine prompts, build reusable prompt templates and lightweight AI-assisted workflows for recurring tasks, and always validate AI output against source data before it is relied upon.

Requirements

  • Bachelor's degree or above in Computer Science, Information Systems, Statistics, or a related field.
  • 2–3 years of relevant working experience in data processing, operations, or a related role; logistics or 3PL industry background is a plus.
  • Working knowledge of SQL and basic Python; hands-on exposure to a cloud data warehouse — Google BigQuery in particular — is a strong advantage, and a genuine willingness to grow technically is essential.
  • Comfortable working with large volumes of data manually; proficient in Excel for data collation, cross-referencing, and basic analysis.
  • Demonstrated hands-on use of AI tools (e.g. ChatGPT, Claude, GitHub Copilot, Cursor) in data or engineering work; able to write effective prompts, use AI coding assistants to produce and debug SQL and Python, and critically verify AI output against source data. Candidates should be prepared to describe how they currently use AI in their day-to-day work.
  • Meticulous attention to detail and a strong sense of data accuracy; able to identify inconsistencies in complex datasets.
  • Self-motivated, adaptable, and willing to work in a hands-on, process-building environment where systems are still maturing.
Opportunity

Data Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Data Engineering

Find me work

By the team behind dataroles.

Find me work
Opportunity

Data Engineering work from LinkedIn, X, Reddit and Upwork, in one list.

Each morning you get everything that fits, strongest first.

Find me work

By the team behind dataroles.