Engineering Ic interview prep.

Behavioural questions to expect

1. Walk me through your CV.
2. Tell me about your most impactful technical project.
3. Tell me about a weakness, a failure, or feedback you've received and worked on.
4. Why services-firm engineering - and why the firm vs a product company or internal IT?
5. Which technical area or stack would you want to focus on, and why?
6. Why the firm?
7. How would you describe the firm's engineering practice + tech stack in your own words?
8. How does engineering actually drive value at an IT services firm?

Technical concepts to master

• DSA + language + framework fluency

  Core DSA (the services-firm screen set) · OOP + design patterns · Language + framework specifics · SQL + database fundamentals

• Solution + integration design at engagement scale

  Realistic enterprise-scale estimation · Platform pattern choice (config vs custom vs hybrid) · Integration patterns · Security + data handling in enterprise

• Client communication + ambiguity

  Translating technical to business · Handling ambiguous requirements · Demoing working software · Handling scope + change discussions

• Quality + testing + handoff on client systems

  Testing strategy (unit + integration + UAT) · Defect triage + management · Code quality + maintainability · Knowledge transfer + handoff

Practical drills

• Implement a function that takes a list of customer transactions (timestamp + amount + customer_id) and returns the top-N customers by total spend in the last 30 days. Walk me through your approach + the tradeoffs at scale.
• A retail client wants to integrate their existing on-prem ERP with a new cloud-based e-commerce platform so orders flow from the website to the ERP for fulfilment + inventory updates flow back to the website. 50K orders / day at peak, 99.5% uptime required. Walk me through the design.
• A client's order-management system (built by the firm 18 months ago; you didn't write it) is reporting intermittent failures - ~5% of orders show as 'stuck' in a processing state for over an hour, not progressing. Client is escalating. Walk me through how you'd diagnose + fix + estimate time-to-recovery.

Smart-question anchors

• Tech stack + projects - the role's first engagement, the stack + platform, expected scope at 6-12 months
• Partner-platform priorities - major cloud / SaaS / package certifications the firm is investing in
• Vertical + offering - the verticals + technical offerings the role focuses on, growth bets
• Ramp + learning - how the firm supports learning new stacks between engagements, certification paths
• Career ladder + growth - analyst -> consultant -> senior -> tech lead -> architect; what each transition requires

Sourced from

The Interview Guys — Accenture Interview Questions 2026 · GeeksForGeeks — TCS / Infosys / Cognizant Technical Interview Question Banks · InterviewBit — Service-Based Company Interview Prep Guide · Deloitte / Capgemini Technology Consultant Interview Prep — Glassdoor + WSO threads · Hello Interview — System Design in a Hurry (selection) · Tech Interview Handbook — Behavioral Interview Questions