Subex
Subex interview process guide: application screening, online assessment, technical rounds, and HR interview for engineering and product roles.
- 3 open jobs
- 1992 founded
- Bengaluru headquarters
About Subex
Subex is a leading digital trust solutions provider headquartered in Bengaluru, India, enabling telecom and enterprise businesses to mitigate risk and optimise operations. The company builds AI-powered solutions for fraud management, revenue assurance, and network intelligence used by telecom operators worldwide.
With between 1,001 and 5,000 employees, Subex serves communication service providers and enterprises across multiple geographies, competing in a specialised niche of telecom analytics and risk management software rather than broad-based IT services.
Subex careers on Jobaaj typically feature openings in software engineering, data science, product management, and implementation and support, hiring both campus graduates and experienced professionals. The company values analytical thinking, strong coding fundamentals, and interest in AI-driven telecom analytics products.
Subex hiring process
1. Application and resume screening
Candidates typically apply through Jobaaj or the Subex careers page, and recruiters shortlist profiles based on relevant software engineering, data science, or telecom domain experience for the open role. Familiarity with analytics, AI, or fraud-management concepts is usually viewed as an advantage.
2. Online assessment
For technical roles, candidates typically take an online coding and aptitude test covering data structures, programming fundamentals, and logical reasoning. The test is usually completed within about 45-60 minutes.
3. Technical interview (first round)
A senior engineer evaluates coding skills, problem-solving, and understanding of relevant technologies used in fraud management or network analytics products. Candidates are often asked to explain a past data-related project in detail.
4. Technical interview (second round)
A technical lead probes system design fundamentals, data modelling, and past project depth for experienced candidates working on analytics or AI-driven products. This round often includes discussion of handling large, high-velocity telecom datasets.
5. Managerial round
A hiring manager assesses ownership, communication, and fit with product and delivery teams working on telecom risk and analytics solutions. The manager also typically explores the candidate's interest in AI-driven products.
6. HR interview and offer
The final round covers compensation, location, and joining timelines, followed by an offer letter. HR also typically shares details of benefits and growth opportunities within the analytics business.
Subex interview rounds
Subex's interview process typically has four to five rounds for most engineering and product roles, with an extra technical round for senior data science or architecture positions.
Round 1: Online assessment
A 45-60 minute online test typically covers data structures, programming fundamentals, and logical reasoning, filtering candidates before the interview stages begin.
- Basic data structures and algorithms questions
- Aptitude and logical reasoning problems
- Simple SQL or database query questions
Round 2: Technical interview
A senior engineer conducts a 45-60 minute discussion on coding, data handling, and relevant project experience in analytics or fraud-management systems.
- Explaining a past project involving data pipelines or analytics
- Basic questions on APIs, databases, or cloud deployment
- Debugging a piece of sample code under time pressure
Round 3: System design or advanced technical round
For experienced candidates, a technical lead evaluates system design thinking and depth in a specific technology stack used for large-scale telecom data processing.
- Designing a system to detect anomalies in telecom traffic data
- Handling high-volume, near real-time data processing
- Choosing between different approaches for scalable analytics
Round 4: Managerial and HR round
A hiring manager and HR representative assess team fit, compensation expectations, and joining timelines, typically over 20-30 minutes.
- Salary expectations and current notice period
- Long-term interest in telecom analytics or AI-driven products
- Comfort working across product, engineering, and client teams
Subex salaries
| Designation | Average salary |
|---|---|
Data Analyst Experience: 1 - 4 years yrs |
₹ 9 Lakhs /year Typical range â‚ą6 L – â‚ą12 L/yr |
Technical Lead Experience: 6 - 10 years yrs |
₹ 27.5 Lakhs /year Typical range â‚ą20 L – â‚ą35 L/yr |
Senior Software Engineer Experience: 3 - 6 years yrs |
₹ 17 Lakhs /year Typical range â‚ą12 L – â‚ą22 L/yr |
Software Engineer Experience: 0 - 2 years yrs |
₹ 6.8 Lakhs /year Typical range â‚ą4.5 L – â‚ą9 L/yr |
Figures are estimates based on typical market ranges for this role and sector, not company-published pay. Actual offers vary by location, skills and negotiation.
Subex interview questions
Question banks most relevant to roles at Subex, with model answers.
Subex interview FAQs
Q1How many rounds does the Subex interview process typically have?
The process typically has four to five rounds, including an online assessment, one or two technical interviews, a managerial round, and a final HR discussion on compensation and joining.
Q2How long does the Subex hiring process usually take?
It typically takes about two to four weeks from application to offer, depending on the seniority of the role and the number of technical rounds involved.
Q3How would you design a system to detect fraudulent activity in telecom traffic?
A good answer covers using rule-based checks alongside anomaly-detection models, processing data close to real time, flagging suspicious patterns for review, and continuously refining models with new fraud patterns.
Q4Why do you want to work at Subex?
Focus on Subex's specialisation in digital trust and telecom analytics, your interest in fraud management or AI-driven products, and how your engineering or data background fits the role.
Q5How would you troubleshoot a sudden drop in accuracy of an analytics model in production?
Explain that you would check for changes in input data quality, monitor for data drift, review recent model or pipeline changes, and retrain or recalibrate the model based on findings.
Q6What is the typical entry point and salary structure for freshers at Subex?
Freshers typically join as software or data engineers; compensation usually follows industry-standard structures for mid-size product and analytics companies, with growth tied to technical depth.
Quick facts about Subex
- How many people work at Subex?
- Subex employs approximately 1001-5000 employees. Headcount figures move over time and are indicative.
- Is Subex a public or private company?
- Ownership: Public Company.
- Who is the CEO of Subex?
- As recorded on this profile, Subrahmanya S. Kumar leads Subex. Leadership can change - check the company's own site for the current position holder.
- What does Subex do?
- Subex operates in Digital Trust Solutions Provider.
3 open jobs at Subex
Apply on Jobaaj, and use this guide to prepare before your first round.
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