Catalog · Nexora

DevOps beginner

Docker and Containers: A Working Mental Model

What a container really is (namespaces, cgroups, layered filesystems), then the practice: small reproducible images, multi-stage builds, layer caching that speeds up CI, container networking and volumes, and multi-service local environments with Compose.

KM Kwame Mensah 4.7

$49.00

9 hours

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JavaScript

JavaScript intermediate

TypeScript for Large Codebases

Types as design tools. Generics and conditional types, discriminated unions that make invalid states unrepresentable, declaration files, strictness flags introduced incrementally, and monorepo project references that keep builds fast as the codebase grows.

LM Lucas Meyer 4.7

$65.00

12 hours

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Python

Python beginner

Testing Python: Pytest, Fixtures and Property-Based Testing

Tests that catch regressions instead of cementing current behaviour. Fixture composition and scoping, parametrisation, sensible mocking boundaries, property-based testing with Hypothesis, and coverage read as a diagnostic rather than a target.

TN Tomas Nowak 4.7

$45.00

8 hours

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Machine Learning

Machine Learning advanced

MLOps: Shipping Models That Survive Contact With Users

Experiment tracking, model registries, reproducible training pipelines, shadow deployments, drift detection and automated rollback. You will build a pipeline where a retrained model cannot reach production without passing evaluation gates, and where a bad deploy is detected in minutes rather than quarters.

AR Ahmed Rahal 4.7

$119.00

20 hours

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Machine Learning

Machine Learning intermediate

Feature Engineering That Actually Moves Metrics

Most model gains come from features, not architecture. Target encoding without leakage, temporal features that respect causality, aggregation windows, interaction discovery and feature stores. Includes a rigorous ablation methodology so you can prove which features earned their place.

SD Sofia Duarte 4.7

$69.00

11 hours

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Agentic AI

Agentic AI advanced

Multi-Agent Systems: Coordination Patterns

When one agent is not enough: supervisor architectures, hierarchical delegation, shared scratchpads and message-passing protocols. You will implement a research team that plans, splits work, critiques its own output and reconciles conflicting findings, then measure whether the added complexity beat a single well-prompted agent.

PR Priya Raghavan 4.7

$129.00

16 hours

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Cloud

Cloud advanced

Event-Driven Architecture on the Cloud

Decoupling with events buys flexibility and bills you in complexity. Event schema design and versioning, idempotent consumers, the saga pattern for distributed workflows, dead-letter handling, and debugging a flow with no single call stack.

KM Kwame Mensah 4.6

$99.00

13 hours

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Cloud

Cloud intermediate

Cloud Cost Engineering and FinOps

Cloud spend is an architecture problem wearing a finance costume. Cost attribution and tagging discipline, rightsizing with real utilisation data, commitment strategy, egress traps, and the design choices that quietly triple a monthly bill.

SD Sofia Duarte 4.6

$79.00

9 hours

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JavaScript

JavaScript intermediate

Modern React Patterns and Server Components

React changed shape and a lot of received wisdom expired with it. Server versus client components, the boundaries between them, data fetching and caching, state colocation, and the rendering model that explains why your component ran three times.

AB Aisha Bello 4.6

$79.00

13 hours

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Career Skills

Career Skills advanced

From Engineer to Tech Lead

The transition from writing the most code to making the most decisions. Technical planning and sequencing, delegation that develops people, code review as mentorship, managing stakeholder expectations, and protecting focus time for a team that is constantly interrupted.

PR Priya Raghavan 4.6

$79.00

9 hours

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Cloud

Cloud intermediate

Infrastructure as Code with Terraform

Declarative infrastructure that a team can share. State management and locking, module design and composition, workspaces versus directories, importing existing resources, plan review as a code-review artefact, and drift detection in CI.

KM Kwame Mensah 4.6

$85.00

14 hours

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DevOps

DevOps advanced

Kubernetes for Application Teams

Enough Kubernetes to run a service well, without becoming a full-time platform engineer. Deployments and rollout strategies, resource requests and limits that prevent noisy neighbours, probes, autoscaling, secrets, Helm packaging, and debugging a pod that will not start.

KM Kwame Mensah 4.6

$119.00

21 hours

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