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JAVA Lead(Payments/Fintech)- Bangalore

Grid Dynamics

  • Bengaluru, India
  • 20-25 Lacs PA
  • 8-12 Yrs
  • Posted Today
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Recruiter / hiring contact
fjayaraj@griddynamics.com at Grid Dynamics
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About the role

Lead Java Microservices Engineer / Technical Lead (Backend) Company:

Grid Dynamics Location

Bengaluru / Bangalore (Hybrid)

Experience

812 years (B.E/B.Tech) OR 6+ years (M.E/M.Tech/MS) Role Category: Software Development / Engineering Leadership Employment Type: Full-Time, Permanent

Job Overview

Grid Dynamics is seeking an experienced Lead Java Engineer to join our engineering team in Bangalore. In this role, you will architect, design, and scale enterprise microservices, mentor junior engineers, and drive technical excellence using modern backend frameworks, container platforms, and CI/CD automation pipelines.

Key Responsibilities

  • Architect, design, and build resilient, distributed microservices using Java 8+, Spring Boot, Vert.x, and Apache frameworks.
  • Lead engineering discussions, conduct code reviews, and provide hands-on technical mentorship to junior and mid-level developers.
  • Build and integrate RESTful APIs, handling data exchange with JSON and XML over HTTP.
  • Deploy, manage, and scale containerized services using Docker and Kubernetes.
  • Design robust relational database schemas and optimize queries (RDBMS), with exposure to NoSQL solutions.
  • Integrate application-level security, identity federation, and token-based authentication standards (OAuth 2.0 / OpenID Connect).
  • Drive CI/CD automation and build pipelines using Git, Maven, and Jenkins.
  • Collaborate cross-functionally with frontend teams; experience with React or modern JavaScript is a plus.

Required Skills

& Qualifications Education &

Experience

Bachelor’s Degree in Computer Science, Computer Engineering, or related technical field with 8–12 years of software engineering experience. OR Master’s Degree in Computer Science, Computer Engineering, or related technical field with 6+ years of software engineering experience. Minimum 2 years in a technical lead role mentoring engineers.

Core Backend: Strong expertise in Java 8 or higher, Spring Boot, Vert.x, and Apache frameworks. Architecture: In-depth experience in Microservices architecture, REST APIs, JSON, and XML. DevOps & Containers: Proven experience with Docker containerization and Kubernetes orchestration.

Databases: Relational databases (PostgreSQL / MySQL / Oracle); hands-on exposure to NoSQL systems (MongoDB, Cassandra, or Redis) is desirable. Build & Tools: Git, Maven, Jenkins, or equivalent build and CI/CD tools. Security: Solid understanding of OAuth, API security, and authentication/authorization protocols.

Frontend (Good to have): React or advanced JavaScript. How to Apply Interested candidates can share their profiles directly. Could you please email me your updated resume at fjayaraj@griddynamics.com along with: Current CTC: Expected CTC: Notice Period: Once I have these, I’ll review and get back to you with the next steps.

Eligibility & process

Who can apply

Experience: 8-12 Yrs. Open to matching qualifications.

Skills & stack

Boot Payments Spring Boot Microservices Bootstrap React Java Java Fullstack

Selection process

  1. Online Assessment / Technical Interview Rounds / HR Review

Prep kit

20 resources
Study material 4
πŸ“– Aptitude Practice Questions & Mock Tests Curated logical, quantitative, and verbal reasoning problems for the initial online screening round. 🎯 Company-Specific Interview Preparation Corner Detailed interview experiences, exam formats, and previous test questions for Grid Dynamics and tech roles. πŸ“ Technical Placement Question Bank High-yield coding cheat sheets, core CS fundamentals (OOP, DBMS, OS, Networks), and rapid revision guides. πŸ’» Algorithm, DSA & Live Code Debugger Practice Hands-on problem sets to improve coding speed and step-by-step memory debugging.
Company-specific guides 4
πŸ“– APTITUDE & LOGIC Aptitude Practice Questions & Online Mock Tests Curated logical, quantitative, and verbal reasoning problems to sharpen reasoning skills required for the initial screening test. 🎯 COMPANY GUIDE Grid Dynamics Interview Preparation Corner Comprehensive guide covering typical interview formats, common questions, and preparation tips for Grid Dynamics and off-campus tech roles. πŸ“ MOCK TESTS & PAPERS Comprehensive Interview Prep Resources & Syllabus Collection of previous year questions, company-specific test patterns, and interview experiences for technical and HR rounds. πŸ’» CODING PRACTICE Algorithm and Data Structure Problem Set Practice problems to improve coding proficiency and algorithm problem-solving speed for technical rounds.
Likely coding questions 4
πŸ’» Two Sum & Two Pointers Array Optimization Easy / Medium Asked in 85% tech rounds ⚑ Live debugger πŸ’» Reverse Linked List & Detect Cycle (Floyd's Algorithm) Medium Frequently asked in core rounds ⚑ Live debugger πŸ’» SQL Nth Highest Salary with DENSE_RANK() & Subqueries Medium Top standard database question ⚑ Live debugger πŸ’» Valid Parentheses & Stack Implementation Easy / Medium Standard online assessment problem ⚑ Live debugger
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 (Boot, Payments, Spring Boot, Microservices, Bootstrap, React, Java, Java Fullstack) & 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 Grid Dynamics Core Values, Learning Agility & Offer Terms Demonstrate passion, strong communication, and readiness for full-time collaboration.
Technical questions 5
Explain OOP (Object-Oriented Programming) principles with real-world examples in Boot. Answer
Model answer: 1. Encapsulation (data hiding via private fields/getters). 2. Abstraction (hiding implementation complexity). 3. Inheritance (code reusability). 4. Polymorphism (method overriding/overloading).
What is the time and space complexity of QuickSort vs MergeSort? Answer
Model answer: QuickSort: Average O(N log N) time, O(log N) space. Worst O(N^2). MergeSort: Guaranteed O(N log N) time, but requires O(N) auxiliary space.
Explain the difference between SQL Indexing (B-Tree vs Hash) and when not to use an index. Answer
Model answer: Indexes speed up SELECT queries via B-Trees. However, they slow down INSERT, UPDATE, and DELETE operations because indexes must be updated on disk. Avoid on low-cardinality columns (e.g., boolean flags).
What happens under the hood when you enter a URL in a browser? Answer
Model answer: 1. DNS lookup (resolves IP). 2. TCP 3-way handshake (SYN, SYN-ACK, ACK). 3. TLS negotiation for HTTPS. 4. HTTP GET request sent. 5. Server responds with HTML/CSS/JS. 6. Browser renders DOM & CSSOM tree.
What is the difference between REST and GraphQL APIs? Answer
Model answer: REST uses multiple fixed endpoints with possible over/under-fetching. GraphQL uses a single endpoint allowing clients to query exact fields in a single request.
Behavioural & HR questions 3
Why do you want to join Grid Dynamics as a JAVA Lead(Payments/Fintech)- Bangalore?
Highlight Grid Dynamics's market reputation, recent tech innovations, and how your skills in Boot 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.

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