Topics & Knowledge Explorer

Topics

Browse the modern catalog

Seven categories, dozens of articles — find what you need by topic, technology, or difficulty.

AI Engineering

Foundations of AI, machine learning workloads, computer vision, NLP, document intelligence, knowledge mining, generative AI and agentic AI patterns for production systems.

Explore topic

Cloud & DevOps

Containers, microservices, infrastructure-as-code, CI/CD pipelines, GKE, AWS deployments, observability, and the toolchain that ships production fintech systems.

Explore topic

System Design

Strategy pattern, configuration-driven orchestration, decision platforms, account linking, scalable APIs, and service composition patterns for high-volume systems.

Explore topic

Engineering Leadership

Operating notes for engineering leaders: measuring team health, running 1:1s, managing individuals, building credibility, performance management, and feedback craft.

Explore topic

Data & Platforms

Database internals, MongoDB aggregation, replication and sharding, feature flag platforms, and integration patterns for data-heavy workloads.

Explore topic

Algorithms & Interviews

Top algorithm patterns, problem walk-throughs, and a practical guide for system-design and language-specific technical interviews.

Explore topic

Projects & Case Studies

Selected case studies on credit and fraud risk technology, rule engines, platform rewrites, cloud migrations, and digital transformation across fintech and healthcare.

Explore topic

Knowledge Explorer

Search every modernized article

Live search, category filters, and difficulty levels — built directly on top of the migration manifest.

Showing 19 of 19 items

Projects & Case StudiesAdvanced

Market App: Serverless Financial Intelligence Platform

A clean rebuild of a market-alerts, pairs, quant, and autotrading platform into Lambda zip APIs behind API Gateway and CloudFront, with AI-assisted planning and auditable Alpaca execution.

AWSTerraformLambdaCloudFront

9 min read Modernized

Algorithms & InterviewsAdvanced

A Practical Map of Quantitative Finance Algorithms

An industry-standard map of the core algorithms used in quantitative finance, grouped by application area with purpose, use cases, and practical notes.

Quant FinanceAlgorithmsMachine LearningPortfolio Optimization

14 min read Modernized

AI EngineeringFoundational

AI Foundations: From Machine Learning to Agentic AI

A modern, opinionated entry point into AI workloads — machine learning, computer vision, NLP, document intelligence, knowledge mining, generative AI, and agentic AI.

AIGenAIAgentic AINLP

6 min read Modernized

AI EngineeringIntermediate

Agentic AI in Lending: Orchestration Beats the Model

Agentic AI is already in lending — every credit decisioning workflow is a stitched-together agent system. The hard problem is not the model; it is the orchestration that turns each step into an auditable, accountable action.

Agentic AILendingFintechDecisioning

4 min read Modernized

AI EngineeringAdvanced

A Production Architecture for Agentic Lending

Stop trying to build one omniscient agent. Decompose the loan lifecycle into 5 specialized, governed agents — each with a clear job, clear boundaries, and clear escalation paths.

Agentic AILendingArchitectureCompliance

6 min read Modernized

System DesignAdvanced

7 Principles for Reliable Loan Orchestration

Most agentic lending systems do not fail because the AI was bad. They fail when Experian times out, the page is refreshed mid-pull, or a regulatory timer slips. Here are the 7 principles — with code — that prevent that.

OrchestrationTemporalWorkflowSaga

7 min read Modernized

System DesignIntermediate

Configuration-Driven Orchestration in Practice

How to build orchestrators whose behavior is steered by configuration — Strategy pattern, reflection, functional composition, and dependency injection — with versioning baked in from day one.

OrchestrationStrategy PatternKotlinArchitecture

8 min read Modernized

System DesignIntermediate

Orchestrator Service: A Reference Component Map

A modernized component map for an internal orchestrator service — workflow engine, integration layer, automation, monitoring, security, analytics, and admin UI.

OrchestrationWorkflowArchitecture

6 min read Modernized

Cloud & DevOpsFoundational

Containers and Docker for Production Engineers

A practical refresher on containers, Docker engine, images, build caches, base images, and the mental models that keep production deployments boring.

DockerContainersDevOps

7 min read Modernized

Cloud & DevOpsIntermediate

Microservices, CI/CD, and the Real Tradeoffs

When microservices help and when they hurt, plus a clear-eyed view of CI/CD patterns for containerized systems.

MicroservicesCI/CDArchitecture

6 min read Modernized

Cloud & DevOpsFoundational

Engineering Tooling Baseline

The minimum local toolchain a backend / platform engineer should have installed to follow along with the rest of the cloud and devops content.

ToolingSetupDevOps

3 min read Modernized

Engineering LeadershipFoundational

Measuring the Health of an Engineering Team

Ten leading indicators that tell you whether an engineering team is healthy — from morale and collaboration through delivery predictability and retention.

LeadershipTeam HealthOperations

5 min read Modernized

Engineering LeadershipFoundational

Managing Individuals

Ten behaviors that compound over time — trust, expectations, feedback, growth, delegation, recognition, balance, openness, adaptability, and intervention.

Leadership1:1sCoaching

5 min read Modernized

Engineering LeadershipFoundational

Running Effective 1:1s

A repeatable structure for 1:1s that keeps them useful — shared agenda, personal check-in, progress review, growth, coaching, and tracked actions.

Leadership1:1s

4 min read Modernized

Engineering LeadershipIntermediate

Feedback Templates That Actually Land

Ready-to-adapt feedback patterns for QA engineers, senior software engineers, and architects — covering recognition, behaviors to grow, and clear next steps.

LeadershipFeedbackPerformance

5 min read Modernized

Algorithms & InterviewsIntermediate

Top Algorithm Patterns for Interviews

A categorized index of the patterns that explain most LeetCode-style problems — sliding window, two pointers, DP, DFS/BFS, hashing, greedy, and beyond.

AlgorithmsInterviewsPatterns

8 min read Modernized

Data & PlatformsIntermediate

Feature Flags as a Platform Capability

Why feature flags belong to platform engineering — CI/CD decoupling, risk mitigation, A/B testing, dark launches, and a tour of credible tools.

Feature FlagsRelease EngineeringPlatform

6 min read Modernized

Projects & Case StudiesAdvanced

Case Study — Decisioning Platform at Jenius Bank

How the Credit, Fraud & Risk Technology team rebuilt the decisioning platform: cut P99 from 200ms to 5ms, scaled throughput 3.3x, and shipped 96+ releases without P1 incidents.

Risk TechDecisioningPerformanceMigration

7 min read Modernized

Projects & Case StudiesAdvanced

Case Study — Rackspace to GCP Migration at Achieve

Migrating consumer lending platforms from Rackspace to GCP, adopting Kubernetes (GKE), and rebuilding the Salesforce platform from Classic to Lightning.

Cloud MigrationKubernetesSalesforce

6 min read Modernized