# Full concatenated corpus available at https://codersera.com/llms-full.txt
# (regenerated weekly via `node scripts/build-llms-full.js` / `yarn build:llms`)

# Codersera

> Codersera matches companies with vetted remote developers across the modern web, mobile, AI, and infrastructure stack. We technically interview every developer, reference-check, and ship them with a risk-free trial period. We also publish long-form engineering and AI-tooling guides used by ~100k developers per month.

## About

- [About Codersera](https://codersera.com/about-us): Company mission, who we serve, and how we vet developers
- [Why Codersera](https://codersera.com/why-us): Differentiation vs traditional staffing and freelance marketplaces
- [Our services](https://codersera.com/our-services): Hire-by-stack, dedicated teams, and team extension
- [7-day risk-free trial](https://codersera.com/our-7-day-risk-free-trial-policy): How the trial period works in practice
- [FAQs](https://codersera.com/faqs): Common questions about hiring, engagement models, and pricing
- [Contact](https://codersera.com/contact-us): Get in touch
- [Apply (developers)](https://codersera.com/apply): Engineers applying to join the Codersera network

## Hire developers by stack

- [Hire React developers](https://codersera.com/hire/hire-react-developer): Vetted React engineers with production experience in component architecture, hooks, SSR, and modern state management
- [Hire React Native developers](https://codersera.com/hire/hire-react-native-developer): Cross-platform mobile engineers shipping iOS and Android from a single React codebase
- [Hire Node.js developers](https://codersera.com/hire/hire-node-js-developer): Backend engineers fluent in Node, async I/O, and the npm ecosystem
- [Hire Express.js developers](https://codersera.com/hire/hire-express-js-developer): API and middleware specialists on the Express framework
- [Hire JavaScript developers](https://codersera.com/hire/hire-javascript-developer): Generalist JavaScript engineers across browser, Node, and modern runtimes
- [Hire TypeScript developers](https://codersera.com/hire/hire-typescript-developer): Engineers fluent in strict typing, generics, and TypeScript-first codebases
- [Hire Angular developers](https://codersera.com/hire/hire-angular-developer): Engineers with deep experience in Angular component, service, and RxJS patterns
- [Hire Python developers](https://codersera.com/hire/hire-python-developer): Backend, data, and ML engineers fluent in Python and the scientific stack
- [Hire Java developers](https://codersera.com/hire/hire-java-developer): Engineers across Spring, JVM tuning, and enterprise Java
- [Hire PHP developers](https://codersera.com/hire/hire-php-developer): Engineers across Laravel, Symfony, and modern PHP frameworks
- [Hire Ruby developers](https://codersera.com/hire/hire-ruby-developer): Rails and pure-Ruby engineers
- [Hire Go developers](https://codersera.com/hire/hire-go-developer): Backend and infrastructure engineers writing production Go services
- [Hire Rust developers](https://codersera.com/hire/hire-rust-developer): Systems engineers writing performance- and safety-critical Rust

## Tools

- [Online tools](https://codersera.com/tools): Free developer-facing tools — emulators, simulators, and utilities used by ~100k developers per month
- [Free Invoice Generator — No Signup, No Watermark](https://codersera.com/tools/invoice-generator): Free browser-based invoice generator with no signup, no watermark, and no upload. Create a professional PDF invoice in under 60 seconds — line items, tax, discounts, 57+ currencies with locale-aware formatting, logo upload, brand colour. Built for freelance developers, consultants, agencies, and small businesses. Supports India GSTIN + HSN/SAC, UK VAT, EU reverse-charge (Article 196), Canada GST/HST/PST, Australia ABN, US EIN/sales tax. Drafts auto-save to your browser; nothing is uploaded to a server. JSON export for accounting software. Download or print directly to PDF.
- [Task Tracker — Kanban + List + Matrix](https://codersera.com/tools/todo-tracker): The simplest browser-based task tracker for founders and one-person teams — no signup required. One task store, three views: Kanban (drag-and-drop daily flow), List (sortable bulk grooming), Matrix (2×2 impact-vs-effort prioritisation). Tags, projects, status filters. Sign in with Google to sync across devices. AI-friendly schema. Same tool as `/tools/impact-effort-matrix` — just defaults to the Kanban view
- [Impact-Effort Matrix view](https://codersera.com/tools/impact-effort-matrix): The Matrix view of the Codersera Task Tracker — drag tasks onto a 2×2 impact-vs-effort grid, see Quick Wins / Major Projects / Fill-Ins / Time Wasters, get actionable recommendations (batch low-effort tasks, schedule deep work for Major Projects). Same task store as `/tools/todo-tracker` — toggle to Kanban or List anytime
- [AI Agent Task Manager](https://codersera.com/tools/ai-agent-task-board): A free AI agent task manager — run and track multiple AI coding agents in parallel from one task board. Each column is a workstream — one Claude Code / Codex / Cursor session. Queue tasks with full instruction bodies; connect an agent via a copy-paste bootstrap prompt + a personal API key, and it pulls its next task, works it autonomously, and reports completion over a simple REST protocol (pull / attention / resume / complete). Notify-only: a column lights up and your browser pings when an agent needs your input. Free; no signup for the manual board, sign in to connect agents and sync across devices. Also known as the AI Agent Task Board
- [Startup Directory Submission List](https://codersera.com/tools/directory-submission-list): 400+ directories ranked by Domain Authority with dofollow / no-follow status, effort level, and a complete DR-0-to-DR-30 submission playbook
- [Free Domain Rating Checker](https://codersera.com/tools/domain-rating-checker): Check any website's Ahrefs Domain Rating (DR, 0–100) instantly and in bulk (up to 10 domains), powered by Ahrefs' official public DR API. No signup, no daily limit. Explains what a good DR is, DR score ranges, DR vs Domain Authority, and how to improve your DR. CSV export.
- [Free IP Lookup](https://codersera.com/tools/ip-lookup): Free GeoIP lookup for any IPv4 or IPv6 address. Returns country, region, city, postal code, coordinates, timezone, continent, ASN, organisation, ISP, hostname, and flag emoji. Designed for AI agents and scripts — public, CORS-enabled JSON endpoint at `GET /api/tools/ip-lookup?ip=<ip>` (or POST batch up to 10). 60 lookups/minute per caller IP. No signup, no API key, no daily cap. Backed by ipwho.is + ipinfo.io (both MaxMind/IP2Location data).
- [Local AI Model Picker](https://codersera.com/tools/local-ai-model-picker): Free recommender for the best open-source LLM to run on your own hardware. Pick your chip family (Apple Silicon M1-M4, NVIDIA GPU, AMD GPU, CPU-only), available RAM or VRAM, primary use case (general chat, coding, creative writing, vision / screenshots, reasoning / math, uncensored / role-play), and preferred runtime (Ollama / LM Studio / llama.cpp / MLX / vLLM). Returns ranked top-3 picks with Ollama install commands and Hugging Face links. June 2026 model catalog covers Llama 4 (8B / 70B), DeepSeek V4 (chat + Coder), Qwen 3.5 (Instruct + Coder), Gemma 4 (2B / 9B / 27B), Phi-4 + Phi-4-mini, Mistral Small 3 + Nemo, Kimi K2.6 70B (long context), vision (Llama 3.2 Vision, Qwen 2.5-VL), and uncensored fine-tunes (Dolphin 3, Hermes 4 70B). 100% browser-side — no signup, no telemetry, no API key.
- [Focus Timer](https://codersera.com/tools/focus-timer): A free browser focus timer with a task list, per-task countdowns, alarm chimes, browser notifications, and keyboard-first controls. Saves to your browser, no signup needed
- [Wingman — AI Interview Copilot for Mac](https://codersera.com/tools/wingman): A free macOS app that listens to your technical interview in real time and surfaces structured answers — LeetCode solutions, system design breakdowns, and follow-up talking points. Invisible overlay, silent auto-updates
- [InterviewLab — AI Mock Interviewer](https://codersera.com/tools/interviewlab): Voice-driven mock interviews with an AI interviewer that adapts to your role and resume. Get a structured feedback report covering technical depth, system design, communication, and role fit
- [Clipy — Free Screen Recorder](https://codersera.com/tools/clipy-free-screen-recorder): A free, no-install, browser-native screen recorder built for engineers — record screen, webcam, and audio; auto-generated AI transcripts; unlimited recording time
- [Note Taker](https://codersera.com/tools/note-taker): Lightweight in-browser note-taking
- [Markdown Viewer](https://codersera.com/tools/markdown-viewer): Render Markdown files in the browser

## Pillar guides

- [Claude Opus 4.7 complete guide](https://codersera.com/blog/claude-opus-4-7-complete-guide-2026/): Anthropic's flagship model — capabilities, benchmarks, pricing, and engineering use cases
- [GPT-5.5 complete guide](https://codersera.com/blog/gpt-5-5-complete-guide-2026/): OpenAI's GPT-5.5 — model card, benchmarks, integration patterns
- [Llama 4 complete guide](https://codersera.com/blog/llama-4-complete-guide-2026/): Meta's open-weights flagship — variants, deployment, fine-tuning
- [Qwen 3.5 complete guide](https://codersera.com/blog/qwen-3-5-complete-guide-2026/): Alibaba's Qwen 3.5 — capabilities, benchmarks, multilingual coverage
- [Gemma 4 complete guide](https://codersera.com/blog/gemma-4-complete-guide-2026/): Google's open Gemma 4 — sizes, performance, use cases
- [Kimi K2.6 complete guide](https://codersera.com/blog/kimi-k2-6-complete-guide-2026/): Moonshot's Kimi K2.6 — long-context performance and ecosystem
- [DeepSeek V4 complete guide](https://codersera.com/blog/deepseek-v4-complete-guide-2026/): DeepSeek V4 — reasoning capabilities and cost-performance
- [Open-source LLMs landscape 2026](https://codersera.com/blog/open-source-llms-landscape-2026/): The full open-weights landscape — Llama, Qwen, Gemma, DeepSeek, Mistral, and more
- [Self-hosting LLMs complete guide](https://codersera.com/blog/self-hosting-llms-complete-guide-2026/): Hardware, runtimes (vLLM, Ollama, LM Studio), and deployment patterns
- [Apple Silicon LLMs complete guide](https://codersera.com/blog/apple-silicon-llms-complete-guide-2026/): Running LLMs locally on Mac — MLX vs llama.cpp vs Ollama vs LM Studio vs vllm-mlx; what runs on what Mac; Apple Foundation Models; multi-Mac JACCL clusters over Thunderbolt 5; fine-tuning on M-series; the 2026 model picks (DeepSeek V4, Qwen 3.6, Llama 4, Gemma 4, Kimi K2.6)
- [Gemini 3.5 complete guide](https://codersera.com/blog/gemini-3-5-complete-guide-2026/): Google DeepMind's Gemini 3.5 Flash (May 20, 2026) and Pro (June 2026) — pricing, 2M-token context, native multimodal, Workspace integration, Gemini CLI, AI Studio, comparison vs Claude Opus 4.7 and GPT-5.5
- [Fine-tuning LLMs complete guide](https://codersera.com/blog/fine-tuning-llms-complete-guide-2026/): Practical 2026 playbook for fine-tuning open-weight LLMs — LoRA, QLoRA, DoRA, framework comparison (Unsloth, Axolotl, TRL/PEFT, MLX-LoRA), hosted alternatives (Together, Fireworks, Lamini), dataset prep, hyperparameters, evaluation, common failure modes, when NOT to fine-tune
- [Self-training a small LLM from scratch](https://codersera.com/blog/self-training-small-llm-complete-guide-2026/): When pre-training your own small LLM beats fine-tuning. nanochat for $50, modded-nanoGPT speedruns, lit-gpt for production. The 2026 architecture template, realistic costs across model sizes, post-training stack (SFT → ORPO → optional GRPO)
- [AI coding agents complete guide](https://codersera.com/blog/ai-coding-agents-complete-guide-2026/): Claude Code, Cursor, Codex, Gemini CLI, and the broader landscape
- [AGENTS.md / SKILL.md complete guide](https://codersera.com/blog/agents-md-complete-guide-2026/): The portable spec for steering AI coding agents — supported tools, frontmatter, monorepo patterns
- [Cursor IDE complete guide](https://codersera.com/blog/cursor-ide-complete-guide-2026/): Cursor's agent, Composer, model picker, and team workflows
- [Android emulators complete guide](https://codersera.com/blog/android-emulators-complete-guide-2026/): Emulator options, virtualization, and testing strategies
- [iOS simulators complete guide](https://codersera.com/blog/ios-simulators-complete-guide-2026/): Simulator setup, testing patterns, and Xcode integration
- [Mobile app testing complete guide](https://codersera.com/blog/mobile-app-testing-complete-guide-2026/): Manual, automated, and end-to-end mobile testing
- [Software testing complete guide](https://codersera.com/blog/software-testing-complete-guide-2026/): Testing levels, frameworks, and CI/CD integration

## Optional

- [Blog](https://codersera.com/blog): Long-form articles on AI tooling, developer experience, and engineering practice
- [Guides](https://codersera.com/guides): Index of all pillar and reference guides
- [Sitemap](https://codersera.com/sitemap.xml): Full site structure for crawlers
- [Privacy policy](https://codersera.com/privacy-policy)
- [Terms of service](https://codersera.com/terms-of-services)