Library / fintech

Fintech

Market technology and platform concepts.

• FinTech Ecosystem: From Legacy Banking to Next-Gen FinanceAPI-first stacks, embedded finance, and mobile-first distribution reshape how markets meet users.
• Using Node.js with Market Data APIsEvent-driven IO suits streaming quotes; mind backpressure and reconnect logic for WebSockets.
• Quantitative Finance Basics in PythonNumPy vectors for returns, pandas for panels, statsmodels for inference — clarity beats cleverness.
• Pandas & NumPy for Financial ModellingVectorised ops for returns/covariance; rolling windows for betas; chained assignments are foot-guns.
• REST vs WebSocket for Financial InfrastructureRequest/response vs persistent streams — choose based on freshness, fan-out, and state sync.
• Dockerising Financial Software StacksReproducible builds, pinned dependencies, secrets via vaults — containers simplify ops at the cost of observability depth.
• Open Banking & the Financial API EconomyPSD2-style access tokens, TPP licensing, and customer consent UX define the rails.
• How AI-Assisted Robo-Advisors WorkRisk questionnaires map to template portfolios; rebalancing + tax overlays + human escalation on edge cases.
• Web Scraping Macroeconomic Data ResponsiblyRespect robots.txt, throttle requests, cache courteously — legal + ethical guardrails first.
• Alternative Data for MarketsSatellite, card spend, app panels — edge decays as adoption grows; compliance and bias audits required.
• High-Frequency Trading (HFT) — A Technology PrimerCo-location, FPGA/ASIC messaging, queue position games — vastly different from retail latency.
• RegTech: Compliance Automation in FinanceKYC/AML surveillance, trade surveillance, MiFID reporting — machines assist humans, not replace accountability.
• Cloud Infrastructure in FinanceRegion pinning for data residency, multi-AZ failovers, encrypted volumes — shared responsibility model.
• Data Science Behind Personal Finance AppsCategorisation models, cash-flow forecasting, nudging — accuracy hinges on transaction labelling quality.
• Big Data Analytics & Market Trend DetectionStore cheap, analyse thoughtfully — MapReduce/Spark style pipelines for historical market breadth.
• UI/UX Dynamics on Trading PlatformsInformation hierarchy, micro-interactions on risk fields, dark mode legibility — UX errors cost money.
• Cybersecurity in Trading EcosystemsHardware keys, withdrawal allowlists, phishing-resistant MFA — assume breach.
• API Observability & Rate Limits in FinanceStructured logs, metrics on 429s, backoff with jitter — production hygiene for data integrations.
• Node.js + Redis Sub-Second Financial Price Cache ArchitecturePub/sub fan-out, TTL discipline, stampede shields, Redis cluster trade-offs — honest staleness SLAs for market data.
• PostgreSQL TimescaleDB for Tick & OHLC WarehousesHypertables, compression tiers, retention, continuous aggregates — scaling research & BI without losing SQL.
• FIX Protocol — Sessions, Sequencing and Integration DisciplineHeartbeats, gap fill, incremental updates, venue-specific tag governance — mental model for engineers.
• Docker Compose for Reproducible Quant Research StacksService graphs, pinned images, seed scripts, secret injection and CI parity for notebook-to-service pipelines.
• Rate Limiting Market Data APIs — Consumer & Provider PerspectivesToken bucket, exponential backoff with jitter, per-tenant fairness and abuse containment for websocket farms.
• WebSocket Order Book Streaming in Node.js — Backpressure & Snapshot+DeltaInitial snapshot integrity, delta application, memory bounds, slow consumer shedding and binary vs JSON choices.
• Missing Data in Financial Time Series — Imputation Without LookaheadMCAR/MAR/MNAR taxonomy, forward-only fills, Kalman-style smoothers vs naive ffill dangers in backtests.
• Puppeteer Pipelines for Central Bank & Regulator Document HarvestingHeadless ethics, rate respect, DOM brittleness, PDF extraction and legal TOU compliance for macro feeds.
• AWS EC2 Elastic IP Patterns for Always-On Algorithmic ConnectivityElastic IP attachment, failover scripts, ENI pinning, monitoring heartbeats vs naked dynamic public IP churn.
• JWT Authentication for FinTech APIs — Rotation, Replay and Secret HygieneRS256 vs HS256, short-lived AT + refresh RT, JWKS pinning, revocation strategies and SSRF pitfalls on introspection URLs.

Educational glossary content only — not investment advice.