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Software Development Engineer 1

Wexinc

  • Bengaluru, India
  • Not disclosed
  • Internship
  • Posted Oct 24, 2026
HR
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About the role

WEX is a global technology and financial services company that enables businesses to manage payments, fleet, and travel solutions across the world. With a presence in more than 30 countries, WEX combines deep industry expertise with cutting‑edge digital platforms to help clients streamline operations and improve cash flow. The company invests heavily in innovation, leveraging cloud, AI, and data analytics to build next‑generation products. As a fast‑growing organization, WEX offers a collaborative environment where fresh talent can work alongside seasoned engineers, product managers, and data scientists, gaining exposure to real‑world problems that impact millions of users. The role of Software Development Engineer 1 (SDE‑1) is designed for recent graduates and early‑career professionals who are eager to start their software engineering journey. As an SDE‑1, you will be part of a dynamic development team responsible for designing, coding, testing, and maintaining scalable backend services that power WEX’s payment and fleet management platforms. You will collaborate with cross‑functional teams, participate in code reviews, and contribute to continuous improvement of development processes. The position offers a clear growth trajectory, with opportunities to advance to senior engineering roles, lead projects, or specialize in areas such as cloud architecture, data engineering, or product management. **Key Responsibilities:** 1. Write clean, efficient, and maintainable code in Java, Python or C++ for backend services. 2. Design and implement RESTful APIs that integrate with internal and external systems. 3. Develop and optimize database schemas and write complex SQL queries. 4. Participate in code reviews, providing constructive feedback and adhering to coding standards. 5. Conduct unit testing, integration testing, and assist in debugging production issues. 6. Collaborate with product owners and UX teams to translate requirements into technical solutions. 7. Contribute to performance tuning and scalability enhancements of existing services. 8. Maintain version control using Git and follow CI/CD pipelines for automated deployments. 9. Document technical designs, APIs, and operational procedures. 10. Stay updated with emerging technologies and suggest improvements to the tech stack. **Tech Stack:** Java/Python/C++, Spring Boot/Flask, MySQL/PostgreSQL, Git, Docker, Kubernetes, REST APIs, Agile Scrum. **Growth Path:** Starting as an SDE‑1, you can progress to SDE‑2, Senior Engineer, Tech Lead, and eventually Architect or Manager roles, with regular performance reviews and mentorship programs. **Why Join WEX?** The company offers a vibrant culture that encourages learning, innovation, and work‑life balance. Employees benefit from global exposure, competitive compensation, and a supportive environment that values diversity and inclusion. Joining WEX as a fresher provides a solid foundation for a long‑term career in technology and finance.

Eligibility & process

Who can apply

Bachelor's degree in Computer Science, Information Technology, Electronics, or related engineering discipline; Minimum 60% aggregate (or CGPA 6.0/10); Graduating batch 2023‑2025; No active backlogs at the time of joining; Strong foundation in programming and data structures; Good communication skills.

Skills & stack

Java Python C++ Data Structures & Algorithms Algorithms Object Oriented Programming SQL

Selection process

  1. Round 1: Online Coding Assessment
  2. Round 2: Technical Interview (coding & system design)
  3. Round 3: HR Interview

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 (Java, Python, C++, Data Structures & Algorithms, Algorithms, Object Oriented Programming, SQL) & 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 Wexinc 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 Wexinc as a Software Development Engineer 1?
Highlight Wexinc'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.
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.
Wexinc Not disclosed
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