Software Engineer Interview Prep Podcast

Prabuddha Ganegoda
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Ace your Software Engineer interviews with confidence. This podcast helps you organize your thinking, strengthen problem-solving skills, and prepare effectively for real technical interviews. Topics covered include: Programming (Java & Python) Data Structures & Algorithms System Design AI for Software Engineers Interview strategies & mindset Whether you're targeting Big Tech, startups, or senior engineering roles, each episode helps you think clearly, solve better, and perform at your best.

  1. 5 DNI TEMU

    The Behavioral Round - STAR/CARL

    The behavioral round quietly decides more FAANG loops than coding or system design — and most engineers spend 300 hours on LeetCode and 45 minutes preparing for it. In this deep dive, we unpack: – Why FAANG weights behavioral signal so heavily (leveling, risk, culture fit)– The STAR framework, dissected letter by letter, with the failure modes at each step– CARL and why the Learning layer is the punchline, not an afterthought– How to choose between STAR and CARL in real time based on the verb in the question– Building a 12-story bank that covers 14 behavioral dimensions– Company-specific calibration: Amazon's Leadership Principles, Google's Googleyness, Meta's core values, Apple's craft focus, Netflix's candor culture– The five anti-patterns that quietly tank candidates who think they did well– Walkthroughs of ten of the most common behavioral questions with model approaches– The five shifts that separate an L5 answer from an L6 answer Whether you're prepping for your first FAANG loop or trying to figure out why your last one downleveled you, this episode gives you the structure, the frameworks, and the homework to fix it.

    46 min

  2. 17 MAJ

    Kafka Architecture and Triage Production Scenarios

    Every scenario includes: Real-world context setting the stageThe interview question as it would be askedA structured model answerExact configuration parameters with values and reasoning

    1 godz.

  3. 17 MAJ

    System Design Interview: Payment Settlement Batch Processing

    Design a batch processing system for end-of-day payment settlement at a payments company that processes 50 million transactions per day. The system must net merchant positions, calculate fees, and initiate fund transfers to merchant bank accounts within a strict bank cutoff window. Walk me through your design, covering reliability, scalability, and how you'd handle failures. Key Takeaways The outbox pattern is the canonical solution to the dual-write problem. Know it cold.Partition keys define ordering and parallelism — choose with intention, usually around the natural aggregation boundary (here, merchant ID).Throttling must be distributed when you have multiple workers — Redis-backed buckets or a sidecar.Idempotency is non-negotiable in payments. Design for at-least-once and dedupe.Retries are tiered: in-process for transient, delay-queue for slower-resolving, DLQ for terminal.Backpressure beats dropping — use Kafka lag as your buffer when downstream is slow.Reconciliation closes the loop — you don't know it worked until ground truth confirms.Corrections are new events — never rewrite history in a financial system.

    10 min

  4. 24 KWI

    Anatomy of `kubectl apply` - Inside the Kubernetes Control Plane

    When I run kubectl apply, the request is sent to the Kubernetes API Server, which acts as the entry point to the cluster. The API Server processes the request through several stages: Authentication – validates the client (certificates, tokens, etc.) Authorization – checks permissions using RBAC Admission Controllers Mutating (e.g., inject defaults, sidecars) Validating (ensure request is compliant) Once validated, the object is persisted. The API Server stores the Deployment object in etcd, which is the cluster’s consistent key-value store. At this point, the desired state is recorded—but nothing is running yet. The Kubernetes Controller Manager detects the new Deployment via the API Server’s watch mechanism. Deployment Controller creates a ReplicaSet ReplicaSet Controller creates the required Pods This is all driven by control loops comparing: Desired state (in etcd) Current state (actual cluster) The Pods are created without a node assigned. The kube-scheduler: Filters nodes (resource constraints, taints, node selectors) Scores remaining nodes (resource availability, affinity rules) Assigns the best node Once scheduled, the kubelet on the node pulls the image and starts the container. "The important thing is Kubernetes is entirely declarative and event-driven.Nothing is executed immediately—instead, components continuously reconcile actual state toward desired state."

    8 min

  5. 18 KWI

    Deep Dive Kubernetes Pod Start and Failure Modes

    What We Cover in This Episode: The Probe Trap, Why telling an interviewer that a "liveness probe failure removes traffic" is an instant red flag (it actually kills and restarts the container!), and why you should never check external databases in your liveness probes. The JWT Myth: Why saying "JWTs are encrypted" will cost you points. We explain how to articulate that standard JWTs are signed, and how to defend against the notorious alg: none attack. Silent Istio YAML Bugs: We expose the most common structural bug candidates write on the whiteboard: putting fault, retries, and route as separate list items in an Istio VirtualService, which silently fails to route traffic. Zero-Trust Security Illusions: Did you know that Istio's RequestAuthentication alone does not reject unauthenticated requests? We explain why you absolutely need an AuthorizationPolicy to actually block traffic. The Sidecar Evolution: How to elevate your answer from a mid-level to a Staff-level by explaining the new Kubernetes 1.29 native sidecars (restartPolicy: Always), effectively solving the old startup race conditions

    32 min

  6. 17 KWI

    The Architecture of Professional REST APIs

    HTTP Contracts & Status Codes: The podcast will cover why returning a 200 OK for an error is a massive anti-pattern. Jenny explains the exact contract of 2xx, 4xx, and 5xx status codes, and emphasizes the use of trace IDs and machine-readable error envelopes so clients know exactly what went wrong and how to fix it. Versioning & Pagination: They will discuss the trade-offs of URI, Header, and Query Parameter versioning, with Jenny recommending URI versioning (/v1/users) for public APIs. For pagination, the episode will strongly contrast Offset Pagination (which can skip records or show duplicates during mutations) with Cursor-Based Pagination (which uses an opaque token for stable, high-performance data fetching). Idempotency & Safe Operations: You will learn how to design systems for network failures. The hosts clarify the difference between a safe operation (like GET) and an idempotent one (like PUT or DELETE), and how to implement client-supplied Idempotency-Key headers for POST requests so you never accidentally double-charge a user. Performance Levers: Jenny walks through using Cache-Control and ETag headers for conditional requests, sparse fieldsets to save bandwidth, and standardizing rate limits using algorithms like the Token Bucket or Leaky Bucket. Expert Territory (HATEOAS & Governance): To close out, they will discuss the Richardson Maturity Model, defining Level 3 (HATEOAS) where the server dictates the next possible actions via hypermedia links. The episode ends with the philosophy that API documentation (via OpenAPI) and contract testing are first-class engineering concerns, because breaking an API is a "social contract violation".

    28 min

  7. 27 MAR

    Mastering OAuth 2.0 & Microservice Security for Senior Interviews

    Are you preparing for a senior security or backend engineering interview and struggling to articulate how to secure microservices in a zero-trust environment? In this deep dive, we break down the definitive guide to OAuth 2.0, OpenID Connect, and advanced token security to help you move beyond textbook definitions and start designing banking-grade architectures.Whether you are designing a Backend-For-Frontend (BFF) or securing a massive microservice mesh, this episode is your ultimate cheat sheet!What We Cover in This Episode:The "Hotel Keycard" Analogy (AuthN vs. AuthZ): We clarify the critical difference between OpenID Connect (verifying your identity at the front desk) and OAuth 2.0 (the keycard that tells the lock what you can access).The "Secret Handshake" (PKCE): Discover why the Proof Key for Code Exchange (PKCE) is now mandatory for public clients to prevent authorisation code interception attacks.The "Clear Backpack" Trap: We reveal why storing tokens in browser localStorage is a major interview red flag, and how the Backend-For-Frontend (BFF) pattern keeps tokens securely on the server.Defeating the "Forged Badge" (JWT Vulnerabilities): We unpack the notorious alg:none vulnerability and exactly what steps a Resource Server must take to validate a JWT signature safely.Zero-Trust Microservices & Token Exchange: Learn how to move past weak shared secrets. We explain how to use private_key_jwt (RFC 7523) for strong service identity, and why you should use Token Exchange (RFC 8693) to maintain a secure chain of custody across microservices.Banking-Grade Security (DPoP & Token Rotation): We dive into the ultimate defenses against token theft: Refresh Token Rotation, which acts as a tripwire to invalidate compromised token families, and DPoP (Sender-Constrained Tokens, RFC 9449), which mathematically binds a token to the client's private key.

    59 min

  8. 25 MAR

    JVM Internals Deep Dive 8-25 LTS

    JVM Architecture Overview — runtime data areas, memory model, flag reference tableClass Loading Subsystem — delegation model, loading phases, JPMS/Jigsaw module systemExecution Engine & JIT — tiered compilation levels (0→4), inlining, escape analysis, loop vectorisation, SIMD intrinsics, speculative optimisation and deoptimisationGarbage Collection Algorithms — deep dives on G1, ZGC (coloured pointers, load barriers, concurrent relocation), and Shenandoah; full comparison table across all collectorsLTS-by-LTS Optimisation History:GC Configuration & Tuning — selection guide, essential flags, unified GC loggingMonitoring & Profiling — JFR, jcmd/jstack/async-profiler, key production metricsVirtual Threads & Modern Concurrency — VT vs platform threads, migration checklist, StructuredTaskScope patternPerformance Tuning Playbook — symptom→root cause table, AppCDS, CRaC, GraalVM NativeEvolution Timeline — Java 8→25 at a glance

    1 godz. 6 min
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O programie

Ace your Software Engineer interviews with confidence. This podcast helps you organize your thinking, strengthen problem-solving skills, and prepare effectively for real technical interviews. Topics covered include: Programming (Java & Python) Data Structures & Algorithms System Design AI for Software Engineers Interview strategies & mindset Whether you're targeting Big Tech, startups, or senior engineering roles, each episode helps you think clearly, solve better, and perform at your best.

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