Catalog · Nexora

Agentic AI intermediate

Agentic RAG: Retrieval That Reasons

Naive RAG retrieves once and hopes. Agentic RAG grades what it retrieved, rewrites the query when results are thin, and decides when it has enough context. Covers relevance grading, query rewriting loops, hybrid dense plus keyword retrieval, reciprocal rank fusion and LLM-as-judge re-ranking, with honest evaluation of when each technique actually helps.

DO Daniel Okafor 4.8

$79.00

10 hours

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DevOps

DevOps intermediate

Incident Response and On-Call Engineering

The skill of staying calm and effective while production burns. Incident command roles, communication cadence, mitigation before diagnosis, alert hygiene that protects sleep, and blameless postmortems that produce fixes instead of blame.

AR Ahmed Rahal 4.7

$69.00

8 hours

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Deep Learning

Deep Learning advanced

Distributed Training with FSDP and DeepSpeed

When a model no longer fits on one GPU. Data, tensor and pipeline parallelism, fully sharded data parallel, activation checkpointing, and the communication patterns that decide whether adding GPUs actually makes training faster.

HT Hiroshi Tanaka 4.7

$129.00

15 hours

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DevOps

DevOps intermediate

Observability: Logs, Metrics and Traces

Instrument a distributed system so incidents are short. Structured logging, metric cardinality discipline, OpenTelemetry tracing across service boundaries, SLOs and error budgets, and alerts that page a human only when a human is needed.

AR Ahmed Rahal 4.7

$79.00

12 hours

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DevOps

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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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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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 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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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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Agentic AI

Agentic AI intermediate

LLM Observability with LangSmith

You cannot debug what you cannot see. Instrument agent runs with distributed tracing, attach custom metadata and tags so runs are filterable, build evaluation datasets from production traffic, and set up regression tests that catch quality drops before users do. Includes selective tracing so your traces stay signal, not noise.

MA Marta Alves 4.6

$59.00

6 hours

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DevOps

DevOps beginner

CI/CD with GitHub Actions

Pipelines that fail fast and tell you why. Workflow and job structure, matrix builds, effective caching, reusable workflows, OIDC for keyless cloud auth, environment protection rules, and deployment gates. Includes a supply-chain hardening pass.

MA Marta Alves 4.5

$45.00

7 hours

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