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REQUIREMENT_ID_319 β€’ 3-DAY_ACTIVE_POLICY

Software Development Engineer 1

Company
Company WEX
Type
Opportunity Type Full-Time Job
Salary
Stipend / Salary 15 - 25 LPA
Location
Location Bangalore, Karnataka
Posted Date
Posted Date Today
Java C# Golang Python SQL relational databases ELT data pipelines cloud Terraform GitHub Actions TDD BDD microservices vertical slice architecture monitoring incident response data modeling big data CI/CD infrastructure as code
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Aptitude and Logical Reasoning Practice Open Resource β†—
Helps sharpen problem‑solving skills essential for coding and system design interviews at WEX.
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Interview Preparation and Mock Sessions Open Resource β†—
Provides insights into common interview questions and mock interview practice for tech roles.
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Project‑Based Learning and Portfolio Building Open Resource β†—
Guides building real‑world projects that showcase data pipelines and cloud deployments.
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Algorithmic Coding Challenges Open Resource β†—
Offers a vast collection of coding problems to improve algorithmic thinking for WEX interviews.

Bachelor’s degree in Computer Science, Software Engineering, or a related field (B.E/B.Tech/B.Sc). Minimum 1 year of software engineering experience is a plus. No backlog allowed. Candidates should have a strong foundation in programming, SQL, and data pipelines.

1
Round 1: Technical coding (data structures, algorithms, SQL)
2
Round 2: System design and technical deep dive
3
Round 3: HR interview
WEX is a global financial technology company that empowers businesses with payment and business solutions across corporate payments, mobility, fleet, travel and other commercial use cases. The company’s technology backbone supports high‑volume transaction and operational platforms that generate terabytes of data daily. As a result, WEX places a premium on building reliable, scalable, and secure data pipelines and risk engineering platforms that turn raw data into actionable insights. The Software Development Engineer 1 (SDE‑1) role is an entry‑level position within WEX’s Risk Engineering organization based in Bangalore. The role blends traditional software engineering with data engineering, cloud infrastructure, and modern DevOps practices. You will design, develop, test, and maintain end‑to‑end data pipelines that ingest, clean, enrich, and serve large datasets to downstream analytics and risk models. Key responsibilities include: 1. Collaborating with stakeholders to understand business and technical requirements. 2. Designing, coding, and testing new data products and microservices. 3. Building and maintaining ELT pipelines that process data from source systems to data warehouses. 4. Implementing data quality checks, monitoring, and alerting for production data flows. 5. Supporting metadata management, data catalogs, and master data management initiatives. 6. Writing automated tests using TDD/BDD and integrating them into CI/CD pipelines. 7. Managing cloud infrastructure with Terraform and GitHub Actions. 8. Participating in incident response, root‑cause analysis, and performance tuning. 9. Documenting design decisions and best practices for the team. 10. Continuously learning new technologies and contributing to process improvements. Tech stack: Java, C#, Golang, Python, SQL, relational databases (PostgreSQL, MySQL), ELT tools, cloud platforms (AWS/GCP), Terraform, GitHub Actions, CI/CD, microservices, vertical slice architecture, monitoring tools (Prometheus, Grafana), data modeling, and big‑data frameworks. Growth path: Starting as an SDE‑1, you can progress to SDE‑2, Senior Engineer, Data Engineer, Cloud Engineer, Platform Engineer, or even move into product or architecture roles. The role offers exposure to both software development and data engineering, giving you a versatile skill set that is highly valued across fintech and tech companies. Why join WEX? The company offers a collaborative culture that encourages experimentation, mentorship, and rapid learning. You’ll work on high‑impact projects that directly influence risk decisions for millions of customers. With a competitive salary, comprehensive benefits, and a focus on professional growth, WEX is an excellent launchpad for a career in technology and data. Overall, the SDE‑1 role at WEX is ideal for fresh graduates or early‑career engineers who want to blend software development with data engineering in a fast‑moving fintech environment.

WEX β€” Data Analytics & SQL Interview Guide

Previously asked questions, exam syllabus, coding benchmarks & round strategy.

APTITUDE & LOGIC πŸ“–
Aptitude Practice Questions & Online Mock Tests

Curated logical, quantitative, and verbal reasoning problems to sharpen reasoning skills required for the initial screening test.

Open Resource β†—
COMPANY GUIDE 🎯
WEX Interview Preparation Corner

Comprehensive guide covering typical interview formats, common questions, and preparation tips for WEX and off-campus tech roles.

Open Resource β†—
MOCK TESTS & PAPERS πŸ“
Comprehensive Interview Prep Resources & Syllabus

Collection of previous year questions, company-specific test patterns, and interview experiences for technical and HR rounds.

Open Resource β†—
CODING PRACTICE πŸ’»
Algorithm and Data Structure Problem Set

Practice problems to improve coding proficiency and algorithm problem-solving speed for technical rounds.

Open Resource β†—
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 (Java, C#, Golang, Python, SQL, relational databases, ELT, data pipelines, cloud, Terraform, GitHub Actions, TDD, BDD, microservices, vertical slice architecture, monitoring, incident response, data modeling, big data, CI/CD, infrastructure as code) & 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
WEX Core Values, Learning Agility & Offer Terms
Demonstrate passion, strong communication, and readiness for full-time collaboration.
What is the difference between WHERE and HAVING clauses in SQL? Answer β–Ό
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 β–Ό
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 β–Ό
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 β–Ό
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 β–Ό
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.
Why do you want to join WEX as a Software Development Engineer 1?
Preparation Tip: Highlight WEX's market reputation, recent tech innovations, and how your skills in Java directly solve their team's objectives.
Describe a challenging bug or academic project roadblock and how you resolved it.
Preparation Tip: 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?
Preparation Tip: Explain your prioritization strategy, proactive communication with mentors/peers, and agile mindset.

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