India's Most Complete Job-Ready Combo Course

C++ DSA System Design → Get Hired.

// from zero to ₹30+ LPA in 6 months

INFONEXUS IT Institute's Combo Course combines C++20, 500+ DSA Problems, Low-Level Design, and High-Level System Design into one job-ready program — structured exactly around the 4-round FAANG interview format.

View Curriculum ↓
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Live Batch: Starting Soon
12 Seats Remaining
500+ DSA Problems Included
15 Mock Interviews Included
why_infonexus_combo

The Only Course That Covers
All 4 Interview Rounds

INFONEXUS IT Institute's C++ DSA & System Design Combo is engineered around the exact 4-round format used at Amazon, Google, and Microsoft — leaving zero gaps in your preparation.

Round 1 — C++ & Coding Fundamentals

Master C++20 syntax, STL mastery, memory management, templates, and smart pointers — forming the foundation for every subsequent problem-solving round.

Round 2 — DSA Problem Solving

500+ curated problems across arrays, linked lists, trees, graphs, DP, backtracking, and heaps — mapped directly to the difficulty and patterns used in FAANG screening rounds.

Round 3 — Low-Level Design (LLD)

Design real systems at class-level: parking lot, ATM, chess engine, elevator system, e-commerce cart — using SOLID principles and 10+ Gang-of-Four design patterns in C++.

Round 4 — High-Level System Design

Architect distributed systems at production scale: YouTube, WhatsApp, Uber, Twitter, Instagram — covering CDN, caching, message queues, sharding, and load balancing.

15 Full Mock Interviews

INFONEXUS provides 15 full mock interviews with industry engineers — simulating live FAANG interview conditions with real-time feedback on code quality and system thinking.

Placement Guarantee

100% placement assistance: resume review, LinkedIn optimization, referrals to 200+ tech companies, salary negotiation coaching, and offer letter guidance — until you are placed.

C++ DSA System Design course at INFONEXUS IT Institute Indore — students at computers
6 Mo.// complete_program
program_overview

Zero to FAANG-Ready
in One Course

INFONEXUS IT Institute's combo course is the only program that simultaneously builds C++ depth, DSA problem-solving speed, Low-Level Design ability, and High-Level System architecture — matching the complete skill set top tech companies test across 4 interview rounds.

C++20STLGraphsDPSegment TreeTrieSOLIDDesign PatternsKafkaRedisCassandra
learning_roadmap

Your 6-Month Journey to FAANG

A precise, week-by-week roadmap from C++ basics to your first FAANG offer — designed by engineers who cracked it.

W1–4
// weeks_01–04 · phase_one

C++20 Foundations & STL Deep Dive

Master modern C++ from scratch — OOP, templates, smart pointers, move semantics, and the complete STL including containers, iterators, and C++20 Ranges. Zero to confident in C++ in 4 weeks.

C++20STLTemplatesSmart PointersRanges
W5–8
// weeks_05–08 · phase_two

Core DSA — Arrays, Trees, Heaps & Sorting

Solve 150+ problems across arrays, strings, linked lists, stacks, queues, binary trees, BST, and heaps. Master sliding window, two-pointer, and prefix sum patterns that appear in 60% of screening rounds.

ArraysTwo PointerBinary TreesHeapsSorting
W9–14
// weeks_09–14 · phase_three

Advanced DSA — Graphs, DP & Advanced Structures

Master graph algorithms (Dijkstra, Bellman-Ford, topological sort, SCC), dynamic programming (250+ problems across all DP patterns), and advanced structures: Trie, Segment Tree, DSU, Fenwick Tree.

GraphsDP MasteryTrieSegment TreeDSU
W15–18
// weeks_15–18 · phase_four

Low-Level Design — SOLID, Patterns & LLD Interviews

All 23 Gang-of-Four design patterns implemented in C++. Design Parking Lot, Chess Engine, ATM System, Elevator, LRU Cache, Rate Limiter. LLD rounds at top companies — cracked with confidence.

SOLIDGoF PatternsLLD Case StudiesUML Diagrams
W19–24
// weeks_19–24 · phase_five

High-Level System Design — Production Scale Architecture

Design YouTube, WhatsApp, Uber, Twitter, Google Search, and Paytm from scratch. Master consistent hashing, Kafka, Redis, Cassandra, CDN, microservices, rate limiting, and CAP theorem in depth.

Distributed SystemsKafkaRedisCAP TheoremHLD Case Studies
W25–26
// weeks_25–26 · phase_six · final

Mock Interviews, Career Launch & Placement Drives

15 full mock interviews simulating FAANG 4-round process. ATS-optimized resume, LinkedIn profile, open-source portfolio. Salary negotiation scripts. Placement drives with 200+ hiring companies.

15 Mock InterviewsResume & LinkedInPlacement DrivesOffer Negotiation
course_curriculum

18 Modules. 3 Levels.
One Destination — Top Tech.

Every module is reverse-engineered from real FAANG interview feedback — covering exactly what top companies test, in exactly the right sequence.

INFONEXUS C++ DSA System Design combo course — FAANG-ready students at computers

C++ + DSA + System Design — Full Combo

// 6 months · 18 modules · 500+ problems · 15 mock interviews · 200+ hiring partners

// basic_level — C++ Foundations & Core DSA
⏱ 8 Weeks
📋 150+ Problems
🎓 No Prior C++ Needed
📜 Foundation Certificate
01

Modern C++17/20 — Syntax, Memory & OOP

  • Variables, references, pointers — value vs reference semantics
  • Classes, constructors, destructors, copy/move semantics
  • Templates: function templates, class templates & SFINAE basics
  • Smart pointers: unique_ptr, shared_ptr, weak_ptr — RAII pattern
  • Lambda expressions, auto, range-for, structured bindings (C++17)
  • Concepts & Constraints (C++20): type-safe generic programming
02

STL Mastery — Containers, Iterators & Algorithms

  • Sequence containers: vector, deque, list, array — when to use each
  • Associative containers: map, set, unordered_map, unordered_set
  • STL algorithms: sort, binary_search, lower_bound, partial_sort
  • Iterators: begin/end, reverse, inserter, back_inserter patterns
  • C++20 Ranges & Views: filter, transform, take, zip pipelines
  • Custom comparators, functors & lambda in STL algorithms
03

Arrays, Strings & Two-Pointer Patterns

  • Sliding window: fixed & variable window for subarray problems
  • Two-pointer: pair sum, container with most water, trap rainwater
  • Prefix sum & difference arrays for range query problems
  • String manipulation: KMP pattern search & Z-algorithm in C++
  • Frequency maps using unordered_map for anagram/group problems
  • 50+ LeetCode medium problems — arrays & string patterns
04

Linked Lists, Stacks & Queues

  • Singly & doubly linked list in C++ — pointer manipulation mastery
  • Reverse linked list, merge sorted lists, detect & remove cycle
  • Stack using array & STL — monotonic stack patterns for interviews
  • Next greater element, largest rectangle in histogram using stack
  • Queue, circular queue, deque — sliding window maximum using deque
  • LRU Cache implementation using doubly linked list + unordered_map
05

Recursion, Backtracking & Sorting

  • Recursion: call stack, base case design & recursion tree analysis
  • Backtracking: N-Queens, Sudoku Solver, subsets, permutations, combinations
  • Merge Sort & Quick Sort — implementation, pivot strategies & analysis
  • Heap Sort using STL priority_queue & custom comparator
  • Counting Sort, Radix Sort — when linear time sorting applies
  • Binary Search — 10+ patterns: first/last occurrence, rotated array, peak
06

Trees — Binary Trees, BST & Heaps

  • Binary tree: recursive DFS — inorder, preorder, postorder & iterative
  • Level-order BFS using queue — zigzag, right view, level averages
  • BST: insert, delete, search, validate, LCA & k-th smallest element
  • Min-Heap & Max-Heap in C++: priority_queue with custom comparator
  • Heap problems: top-K elements, merge K sorted arrays, median stream
  • AVL tree concepts & Red-Black tree properties for interview questions

⚡ Basic Level Outcome: Students solve 150+ problems, master C++20 fundamentals, STL, and core data structures — passing screening rounds at product companies with confidence.

// advanced_level — Graphs, DP, LLD & System Design Foundations
⏱ 10 Weeks
📋 250+ Problems
🎓 Prerequisite: Basic Level
📜 Advanced Certificate
07

Graphs — BFS, DFS, Shortest Paths & Advanced

  • Graph representations: adjacency list & matrix in C++ STL
  • BFS & DFS — iterative C++ implementations with visited tracking
  • Dijkstra's algorithm using priority_queue — O((V+E) log V)
  • Bellman-Ford, Floyd-Warshall for negative weights & all-pairs
  • Topological sort: Kahn's BFS algorithm & DFS-based approach
  • Cycle detection directed/undirected, bipartite check, SCC (Kosaraju)
08

Dynamic Programming — Patterns & Optimization

  • DP paradigms: memoization vs tabulation — time/space analysis
  • 1D DP: Fibonacci, coin change, house robber, jump game patterns
  • 2D DP: grid paths, LCS, LIS, edit distance, wildcard matching
  • 0/1 Knapsack, unbounded knapsack, partition equal subset sum
  • DP on trees: subtree DP, rerooting technique, diameter variants
  • Bitmask DP: TSP, set cover & DP on profiles for combinatorics
09

Advanced Data Structures — Tries, DSU & Segment Trees

  • Trie: insert, search, prefix match, auto-complete & word dictionary
  • Disjoint Set Union with path compression & union by rank — O(α)
  • Segment Tree: range sum, range min/max, point update — O(log N)
  • Lazy propagation segment tree for range update queries
  • Fenwick Tree (BIT): prefix sum, range sum, 2D BIT — O(log N)
  • Sparse Table for static range minimum query in O(1) after O(N log N)
10

Low-Level Design (LLD) — SOLID & Design Patterns

  • SOLID principles with C++ examples — SRP, OCP, LSP, ISP, DIP
  • Creational patterns: Singleton, Factory, Abstract Factory, Builder
  • Structural patterns: Adapter, Decorator, Proxy, Facade, Composite
  • Behavioural patterns: Observer, Strategy, Command, Iterator, State
  • LLD case studies: Parking Lot, ATM System, Library Management
  • Chess Engine & Elevator System — full UML + C++ implementation
11

System Design Foundations — Scalability & Databases

  • Scalability fundamentals: vertical vs horizontal scaling — when & why
  • SQL vs NoSQL: PostgreSQL, MongoDB, Cassandra — trade-offs by use case
  • Indexing strategies: B-Tree, Hash, composite & covering indexes
  • Caching: Redis vs Memcached, write-through, write-behind, cache-aside
  • Load balancing: Round Robin, Least Connections, IP Hash algorithms
  • CDN design, DNS resolution & HTTP/2 vs HTTP/3 for system design
12

System Design II — Distributed Systems & Microservices

  • CAP Theorem: consistency, availability, partition tolerance trade-offs
  • Consistent Hashing: virtual nodes, ring DHT & load distribution
  • Message queues: Kafka architecture, topics, partitions & consumer groups
  • Microservices: service discovery, API gateway, circuit breaker, saga pattern
  • Rate limiting: token bucket, leaky bucket & sliding window algorithms
  • Design case study: Design Uber/Ola — location, matching & surge pricing

🔴 Advanced Level Outcome: Students master graphs, DP, advanced data structures, LLD with design patterns, and distributed system fundamentals — ready for technical rounds at product companies paying ₹15–25 LPA.

// professional_level — Expert Algorithms, HLD & FAANG Interview Mastery
⏱ 8 Weeks
📋 100+ Hard Problems
🎓 Prerequisite: Advanced Level
📜 Industry Cert + LOR
13

Competitive Programming — Expert Algorithm Techniques

  • Advanced DP: digit DP, DP on DAGs, interval DP (matrix chain mult.)
  • String algorithms: Aho-Corasick, Suffix Array, Suffix Automaton
  • Number theory for CP: Sieve, Euler's totient, modular exponentiation
  • Game theory: Sprague-Grundy theorem, Nim variants & combinatorial games
  • Computational geometry: convex hull (Graham scan), line sweep algorithms
  • Codeforces Div 1/2 contest strategy — upsolving & problem rating system
14

C++ Performance Engineering & Concurrency

  • Memory model: stack vs heap, memory layout, cache line optimizations
  • Move semantics, RVO/NRVO, copy elision & perfect forwarding
  • std::thread, std::mutex, condition_variable — thread-safe data structures
  • std::atomic, lock-free programming & CAS (Compare-And-Swap) operations
  • C++20 Coroutines: co_await, co_yield for async I/O patterns
  • Profiling with perf, Valgrind & sanitizers — identifying bottlenecks
15

High-Level Design — Real System Architecture at Scale

  • Design YouTube: CDN for video, transcoding pipeline, recommendation feed
  • Design WhatsApp: end-to-end messaging, presence, push notifications
  • Design Twitter: tweet fanout, timeline generation, trending hashtags
  • Design Instagram: image storage, news feed, follow graph at 1B users
  • Design Paytm/Payment Gateway: ACID transactions, idempotency, fraud
  • Design Google Search: web crawling, indexing, PageRank & query serving
16

Advanced LLD — Real-World System Design at Class Level

  • Design an in-memory key-value store (Redis-like) in C++
  • Design a thread-safe LRU Cache with O(1) get/put — C++17 impl.
  • Design a rate limiter: token bucket in C++ with std::atomic
  • Design a URL shortener: base62 encoding, hash collision resolution
  • Design a notification system: observer + strategy + queue patterns
  • Design a log aggregation system: Kafka-like publish-subscribe in C++
17

FAANG Mock Interview — System Design & DSA Rounds

  • 15 full mock interviews: coding round, LLD round, HLD round, HR round
  • Amazon-style OA simulation: timed two-problem set with auto-judging
  • Google interview simulation: whiteboard system design with live feedback
  • Company-specific DSA question banks: Amazon, Microsoft, Google, Meta
  • Behavioural interview: STAR framework for leadership principles (Amazon)
  • Written feedback report from senior engineers after each mock session
18

Career Launch — Resume, Portfolio & Offer Negotiation

  • Resume crafting: quantified impact statements, ATS optimization for C++ roles
  • GitHub portfolio: clean README, contribution graph, open-source contributions
  • LinkedIn profile: keyword optimization for recruiters at FAANG companies
  • Cold outreach templates to engineering managers at target companies
  • Offer evaluation: base, RSU, signing bonus, growth trajectory comparison
  • Salary negotiation: counter-offer scripts with data — ₹10–45 LPA range

🔵 Professional Level Outcome: Students are fully FAANG-interview ready — with expert algorithms, production-grade C++ skills, complete HLD/LLD ability, 15 mock interviews, and a career launch strategy targeting ₹22–45 LPA.

live_projects

Build Real Systems.
Not Toy Projects.

Every project is production-relevant and goes directly on your GitHub portfolio — giving interviewers concrete proof of your skills.

LRU Cache C++ implementation project
// Basic

Thread-Safe LRU Cache

Implement an LRU cache with O(1) get/put using doubly linked list + unordered_map in C++. Add thread-safety with std::mutex.

C++17STLstd::mutexunordered_map
Graph pathfinding visualizer C++ project
// Basic

Graph Pathfinding Visualizer

Build a CLI-based graph visualizer showing BFS, DFS, Dijkstra, and A* in action with step-by-step animation using C++ STL.

C++20GraphsDijkstraA*
Parking lot system design LLD C++ project
// Advanced

Parking Lot System (LLD)

Full OOP design using Strategy, Factory, and Observer patterns. Supports multiple vehicle types, floors, pricing strategies, and ticket generation.

SOLIDDesign PatternsOOPUML
In-memory database C++ advanced project
// Advanced

In-Memory Key-Value Store

Redis-inspired key-value store in C++ with TTL expiry, LRU eviction, pub/sub channels, and a basic RESP protocol parser.

C++20ConcurrencyRedis DesignRESP
Distributed URL shortener system design project
// Professional

Distributed URL Shortener (HLD)

Complete HLD: base62 encoding, Cassandra for storage, Redis caching, consistent hashing for distribution, rate limiting, and analytics service.

HLDCassandraRedisConsistent Hashing
Real-time chat system design FAANG project
// Professional

Real-Time Chat System (WhatsApp-scale)

Production HLD: WebSocket gateway, message fanout, presence service, Kafka for async delivery, end-to-end encryption architecture, and push notifications.

KafkaWebSocketsHLDMicroservices
course_comparison

Why INFONEXUS vs
Other DSA Courses?

See exactly what separates the INFONEXUS C++ DSA & System Design Combo from typical online courses and bootcamps.

Feature INFONEXUS Combo Typical Online Course Bootcamp
C++20 Modern Syntax & STL✓ Full Coverage⚡ Partial✗
500+ Curated DSA Problems✓ 500+ Problems⚡ 100–200⚡ 50–100
Low-Level Design (LLD) with GoF Patterns✓ All 23 Patterns✗✗
High-Level System Design (HLD)✓ 6 Real Systems⚡ Basics Only✗
Mock Interviews with Industry Engineers✓ 15 Sessions✗⚡ 2–3 Only
C++ Concurrency & Performance Engineering✓ Full Module✗✗
Placement Support with 200+ Companies✓ 100% Support✗⚡ Limited
Live Projects for GitHub Portfolio✓ 6+ Projects⚡ 1–2⚡ 2–3
Competitive Programming (Codeforces Div 1)✓ Included✗✗
Salary Negotiation Coaching✓ Included✗⚡ Basic HR Prep
batch_schedule

Upcoming Batch Schedule

Choose the batch that fits your lifestyle — weekday evenings, weekends, or online. All sessions are recorded for 12 months.

Morning Batch

9:00 AM – 12:00 PM
Mon, Wed, Fri
🔴 4 Seats Left
📍 Indore Campus + Online

Evening Batch

7:00 PM – 9:30 PM
Mon – Fri
🔴 6 Seats Left
📍 Indore Campus + Online

Weekend Batch

10:00 AM – 2:00 PM
Sat & Sun
🟢 8 Seats Available
📍 Indore Campus + Online

Online Fast-Track

Flexible Timing
Live + Recorded Sessions
🟢 12 Seats Available
🌐 100% Online — Pan India

// all_batches_include: recorded_sessions · doubt_clearing · ta_support · placement_assistance

placement_results

Real Numbers From
Real Placements

INFONEXUS IT Institute's C++ DSA Combo graduates are placed at top tech companies. These are verified outcomes — not estimates.

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// companies_that_hire_our_graduates

AmazonMicrosoftGoogleMetaFlipkartZomatoPhonePeRazorpaySwiggyAtlassianAdobeOracleSalesforceUber
faculty

Trained by Engineers Who
Cracked FAANG

Every INFONEXUS C++ DSA instructor holds a verified FAANG offer letter — teaching from direct interview experience, not theory.

Vivek Singh — Lead DSA Trainer at INFONEXUS IT Institute

Vivek Singh

// Lead DSA Trainer

Ex-Amazon SDE-2 · C++ Expert · 11+ Yrs
Ananya Rao — System Design Lead at INFONEXUS

Ananya Rao

// System Design Lead

Ex-Google SWE · IIT Bombay · 9+ Yrs
Rohit Kapoor — Competitive Programming Expert at INFONEXUS

Rohit Kapoor

// Competitive Prog. Expert

Ex-Microsoft · Codeforces LGM · 10+ Yrs
Prerna Joshi — LLD & Design Patterns Trainer at INFONEXUS

Prerna Joshi

// LLD & Design Patterns

Ex-Uber SDE · BITS Pilani · 8+ Yrs
alumni_success

4200+ Engineers.
One Destination.

Verified placements from INFONEXUS C++ DSA & System Design Combo graduates at top tech companies.

★★★★★

The INFONEXUS combo course is the real deal. The LLD module alone got me through round 3 at Amazon. I've seen online courses skip design patterns entirely — INFONEXUS covers all 23 GoF patterns with real C++ implementations. Got SDE-2 offer at ₹42 LPA.

Siddharth Nair INFONEXUS alumni
Siddharth Nair
SDE-2 at Amazon
₹42 LPA
★★★★★

I failed 3 FAANG interviews before INFONEXUS. The system design module — especially CAP theorem, consistent hashing, and the WhatsApp case study — completely changed how I think architecturally. Cleared Google's 5-round process on the next attempt.

Meghna Sharma INFONEXUS alumni
Meghna Sharma
SWE-3 at Google India
₹58 LPA
★★★★★

Complete beginner in C++ — I came from Python. Within 6 months at INFONEXUS, I was solving Codeforces Div 1 C problems and designing distributed systems confidently. The 15 mock interviews built real interview confidence. Microsoft offer at ₹28 LPA.

Aryan Khanna INFONEXUS alumni
Aryan Khanna
SDE at Microsoft
₹28 LPA
faq

Questions About the
Combo Course

Everything you need to know before joining INFONEXUS IT Institute's C++ DSA & System Design Combo program.

INFONEXUS's C++ DSA Combo is built around the exact 4-round FAANG interview format — C++ coding (Round 1), DSA problem solving (Round 2), Low-Level Design with design patterns (Round 3), and High-Level System Design (Round 4). Most courses only cover Rounds 1-2 and skip LLD and HLD entirely, leaving students unprepared for senior SDE roles.
Yes. The Basic module starts from C++ syntax, memory model, pointers, and OOP from scratch. Students from Python, Java, and other languages transition smoothly. C++ is the preferred language for DSA at FAANG because of its STL efficiency and pointer-level control — learning it from scratch in this program is common and fully supported.
Yes — both in depth. LLD is covered in Advanced Level (Modules 10 & 16) using SOLID principles and all 23 GoF design patterns with real C++ implementations including parking lot, chess engine, ATM, and in-memory Redis. HLD is covered in Advanced and Professional levels — designing YouTube, WhatsApp, Twitter, Instagram, Uber, Paytm, and Google Search at production scale with full component-level architecture.
Students solve 500+ curated problems across all three levels: 150+ at Basic level (easy-medium), 250+ at Advanced level (medium-hard), and 100+ hard problems including Codeforces Div 1 level at Professional level. Problems are selected from LeetCode, Codeforces, GFG, and company-specific question banks from Amazon, Google, and Microsoft.
INFONEXUS C++ DSA & System Design graduates have received verified offers ranging from ₹10 LPA (entry-level, Basic+Advanced) to ₹58 LPA (Professional level, FAANG). The average package across all 2024 graduates is ₹18 LPA. Top placements include Amazon SDE-2 at ₹42 LPA, Google SWE-3 at ₹58 LPA, and Microsoft SDE at ₹28 LPA.
INFONEXUS offers live online classes (Zoom) and offline classes at the Indore campus. All sessions are recorded for 12 months. Weekday batches (Mon-Fri, 7-9 PM) and weekend batches (Sat-Sun, 10 AM-2 PM) are available for working professionals. Doubt-clearing sessions run every weekday evening with dedicated teaching assistants.
next_batch_starting_soon

Get Job-Ready
in 6 Months.

4200+ INFONEXUS engineers placed at top tech companies. Your preparation starts with a free demo class — zero payment, zero commitment required.

✓ C++20 Mastery ✓ 500+ DSA Problems ✓ LLD + HLD ✓ 15 Mock Interviews → ₹18 LPA Avg Package
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