JOBWAVE VERIFIED

Full Stack Engineer — Tier 3 Technical Escalations & Integration

Experience: 3+ Years (2–4+ years required) Education: 15 Years Full-Time Education — Bachelor's / Master's in CS, IT, MIS, or related Shift Pattern: Rotational Shifts — 6:30 AM–3:30 PM IST / 3:00 PM–12:00 AM IST + Rotational On-Call Core Domain: Database Management, API & Web Integration, Enterprise System Support Work Mode: Not specified Salary: Not specified

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JOBWAVE INSIGHTS

Who is this for?

This role is best suited for a Technical Support Engineer, Database Specialist, Full Stack Developer, or Application Support Engineer with 3+ years of experience who is comfortable handling complex Tier 3 escalations.

The role strongly favors professionals who enjoy root-cause analysis, database troubleshooting, API debugging, Linux diagnostics, enterprise integrations, and high-severity production incidents.

Key Skills

• Advanced SQL and relational database troubleshooting
• Oracle, MSSQL, PostgreSQL, SAP HANA, or IBM DB2
• REST and SOAP API debugging
• JSON, XML, HTTP headers and payload analysis
• Postman and SoapUI
• Linux/Unix command line and shell scripting
• Java and web programming fundamentals
• Enterprise application and ERP environments
• SAP NetWeaver / SAP Mobility exposure
• Network and performance troubleshooting
• Incident management and technical RCA
• Customer communication and escalation handling

Priority Skills

Highest Priority

1. Database troubleshooting and SQL performance tuning
2. REST/SOAP API and payload debugging
3. Production incident and root-cause analysis
4. Linux troubleshooting and log analysis
5. Enterprise application integration

Strong Advantages

• SAP ecosystem knowledge
• Java web application experience
• Network protocol troubleshooting
• VM/NAS/FTP environments
• Big Data/Fast Data exposure
• Experience handling Tier 3 escalations

What to Prepare

• Advanced SQL queries, indexes, execution plans and performance tuning
• Database troubleshooting across multiple relational databases
• REST/SOAP debugging using Postman and SoapUI
• HTTP status codes, headers and network troubleshooting
• Linux commands and application log analysis
• Java web application architecture
• Production incident management
• Root Cause Analysis documentation
• Customer-facing technical communication

What to Focus On

1. Database Diagnostics

Be able to investigate slow queries, database errors, deadlocks, indexing problems, execution plans and data inconsistencies.

2. API & Integration Troubleshooting

Practice tracing an API request from the client through the network/API layer to the application and database. Understand how to inspect JSON/XML payloads, HTTP headers and response codes.

3. Linux & Production Troubleshooting

Be comfortable using commands such as tail, grep, awk, top, netstat and df to investigate application logs, connectivity and server-resource issues.

4. Enterprise Systems

Understand how web applications interact with databases, Java servers, SAP/ERP systems, integration frameworks and supporting infrastructure.

5. Escalation Handling

Prepare examples showing how you handled production incidents, identified root causes, coordinated with multiple teams and communicated with customers under pressure.

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JOB DETAILS

Original Role Information

Role Overview

Although titled Full Stack Engineer, this position primarily operates as a Tier 3 Technical Escalation & Integration Engineer.

The engineer acts as a final technical escalation point for complex enterprise issues, working across:

• Backend databases
• Web APIs and services
• Linux servers
• Java applications
• SAP/integration frameworks
• Enterprise infrastructure

The primary objective is to diagnose complex technical problems, restore system stability and provide sustainable solutions.

Responsibilities

Tier 3 Escalation Ownership

• Own highly complex and sensitive issues escalated from Tier 2.
• Serve as the final technical authority for difficult production incidents.
• Investigate mission-critical enterprise application problems.

Deep-Dive Technical Debugging

• Troubleshoot data-driven web applications.
• Diagnose REST, SOAP, XML and JSON integration issues.
• Investigate network and application performance bottlenecks.
• Perform detailed root-cause analysis.

Database & System Management

• Maintain shared application instances and virtual environments.
• Troubleshoot relational databases across multiple platforms.
• Investigate data integrity, query performance and database-related application failures.

Implementation Support

• Work with client implementation teams before and after go-live.
• Help establish technical support processes.
• Support successful transition from implementation to production operations.

Knowledge & Mentorship

• Create technical Root Cause Analysis documentation.
• Develop troubleshooting guides and best-practice documentation.
• Provide technical guidance to junior engineers and support teams.

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REQUIREMENTS

Experience

• 3+ years of experience in troubleshooting, maintaining or developing data-driven web applications and APIs.
• Experience handling production issues and complex technical escalations.
• Experience working across databases, APIs and enterprise applications.

Education

• Bachelor's or Master's degree requiring 15 years of full-time education.

• Preferred fields include:

  • Computer Science
  • Information Technology
  • Management Information Systems
  • Related technical disciplines

Database Requirements

Experience with one or more of:

• Microsoft SQL Server / MSSQL
• Oracle
• PostgreSQL
• SAP HANA
• IBM DB2

Knowledge should include:

• Advanced SQL queries
• Query optimization
• Indexing
• Execution plans
• Database performance tuning
• Database maintenance
• Troubleshooting data-related application issues

API & Web Services

• REST API troubleshooting
• SOAP web services
• JSON and XML payload analysis
• HTTP headers and status codes
• Postman
• SoapUI
• Web-service integration troubleshooting

Languages & Platforms

• Foundational Java knowledge
• Web programming concepts
• HTTP fundamentals
• ICF Framework exposure
• Linux/Unix administration fundamentals
• Shell scripting
• CLI troubleshooting
• Network protocol debugging

Enterprise Ecosystems

Exposure to:

• ERP systems
• SAP NetWeaver
• SAP Mobility
• Big Data / Fast Data pipelines
• Virtual machines
• NAS
• FTP scripting
• Data security protocols

Soft Skills

• Calm and structured approach during high-severity incidents
• Strong analytical and troubleshooting ability
• Clear customer communication
• Incident documentation
• Cross-team coordination
• Ability to work under production pressure
• Willingness to participate in rotational on-call support

Shift Requirements

Morning Shift

6:30 AM – 3:30 PM IST

Evening Shift

3:00 PM – 12:00 AM IST

• Rotational shifts
• Rotational on-call responsibilities

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QUALIFICATIONS

• 3+ years of relevant technical experience
• 15 years of full-time education
• Bachelor's/Master's degree in CS, IT, MIS or related field
• Strong SQL and database troubleshooting skills
• REST/SOAP integration experience
• Postman and/or SoapUI experience
• Linux/Unix troubleshooting capabilities
• Java/web application fundamentals
• Enterprise systems exposure
• Strong analytical and incident-management skills
• Customer-facing communication experience
• Willingness to work rotational shifts and on-call

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INTERVIEW PREPARATION

Phase 1 — Database & SQL Diagnostics

• Revise advanced SQL across Oracle, PostgreSQL and SQL Server.
• Practice indexes, execution plans and query optimization.
• Review deadlocks and database performance issues.
• Practice diagnosing data inconsistencies and slow queries.

Phase 2 — API & Integration Debugging

• Practice REST API debugging with Postman.
• Practice SOAP/XML troubleshooting with SoapUI.
• Understand JSON/XML payload structures.
• Review HTTP status codes and headers.
• Learn how to isolate network, API gateway and application-layer failures.
• Review SSL/TLS fundamentals.

Phase 3 — Linux & Java Infrastructure

• Practice Linux CLI navigation.
• Use tail, grep, awk, top, netstat and df.
• Practice application-log investigation.
• Review shell scripting fundamentals.
• Refresh Java and object-oriented programming basics.
• Understand web-server/database connection-pool interactions.

Phase 4 — Tier 3 Escalation Scenarios

Prepare 2–3 detailed production incident examples using the STAR method:

• Situation
• Task
• Action
• Result

Focus your examples on:

• Ambiguous production failures
• Database-related incidents
• API/integration failures
• High-severity customer escalations
• Root-cause identification
• Cross-team coordination
• Customer communication
• Technical RCA documentation

Final Interview Focus

Expect scenario-based questions such as:

• How would you troubleshoot a production API returning intermittent 500 errors?
• How would you identify why a database query suddenly became slow?
• How would you determine whether an issue is caused by the network, API layer or application?
• How would you investigate an application failure using Linux logs?
• How would you handle a high-priority customer escalation when the root cause is not immediately clear?
• How would you document the RCA after resolving a production incident?