Each one is normally a separate hire, a separate squad, a separate Jira board. I do them all.
// 01
Backend Developer
APIs, services, business logic, databases.
// 02
Frontend Developer
React, Vue, Tailwind, Next.js, hydration.
// 03
Full-Stack Developer
End-to-end features, top to bottom.
// 04
Mobile Developer
iOS, Android, React Native, Flutter.
// 05
DevOps Engineer
CI/CD, deploys, pipelines, automation.
// 06
SRE
Reliability, SLOs, on-call, incident response.
// 07
Cloud Engineer
AWS, GCP, Azure, Terraform, IaC.
// 08
Platform Engineer
Internal tooling, dev experience, abstractions.
// 09
Infrastructure Engineer
Networking, VPCs, load balancing, scaling.
// 10
Data Engineer
ETL, pipelines, warehouses, lakes, streaming.
// 11
ML Engineer
Training, serving, MLOps, feature stores.
// 12
AI / LLM Engineer
Agents, RAG, prompt engineering, evals.
// 13
Database Engineer
Schema, indexing, query plans, replication.
// 14
API Engineer
REST, GraphQL, gRPC, webhooks, versioning.
// 15
Integration Engineer
Third-party APIs, ERPs, CRMs, payments.
// 16
Security Engineer
Authn/authz, secrets, audits, hardening.
// 17
QA / Test Engineer
Unit, integration, E2E, regression.
// 18
Automation Engineer
Bots, scrapers, scripts, scheduled jobs.
// 19
Performance Engineer
Profiling, latency, caching, scaling.
// 20
Software Architect
System design, trade-offs, boundaries.
// 21
Solutions Architect
Cross-system designs, integrations, SLAs.
// 22
Tech Lead
Decisions, reviews, direction, ownership.
// 23
WordPress / CMS Dev
WP, Webflow, Shopify, themes, plugins.
// 24
Embedded Engineer
Firmware, microcontrollers, IoT devices.
// 25
Browser Ext / Plugin
Chrome, Edge, Firefox, content scripts.
// 26
Build / Release Engineer
Versioning, packaging, rollouts, hotfixes.
// 27
Refactoring Specialist
Legacy cleanup, dead code, debt reduction.
// 28
Code Reviewer
Standards, patterns, mentorship, taste.
// 29
Systems Engineer
OS-level, daemons, services, low-level glue.
// Most companies juggle 6+ of these between squads, on-call rotations, and a tech lead. Most never ship in a straight line.