Available for new projects · GMT+8, US/EU overlap 当前可接新项目 · GMT+8，覆盖欧美时段

Senior TS Full-Stack Team.
AI-Assisted. Human-Accountable. 资深 TS 全栈团队
AI 提效 · 人工把关

A remote delivery pod of senior full-stack developers for overseas founders. Fixed-price packages, weekly demos, and a client-owned GitHub repo from day one. 面向海外创业者的资深全栈远程交付团队。固定价格套餐、每周演示，代码仓库从第一天起就归属客户。

Contact Us About Your Project联系描述你的项目 View Selected Work →查看交付案例 →

No obligation · NDA signed before you share anything · Reply within 12h 无义务咨询 · 分享资料前可先签 NDA · 12 小时内回复

20+Projects delivered已交付项目
90%Clients from US/EU客户来自欧美
10+Countries served覆盖国家地区
$3K+Minimum engagement项目起步价

Client rating 4.9/5 across post-project surveys, 2022–2026. 客户评分 4.9/5，来自 2022–2026 项目后回访。

Fixed-Price Packages标准化服务包

Clear scope. Clear price. No surprises.范围清晰 · 价格透明 · 没有惊吓

Landing MVP

$2,400+ fixed起
⚡ 2-week delivery⚡ 2 周交付
  • Responsive home + 3 inner pages响应式首页 + 3 个内页
  • Contact form / email subscription表单 / 邮件订阅
  • Deployed on Vercel, your account部署至你的 Vercel 账号
  • Basic SEO setup included含基础 SEO 配置
Start a project开始项目
Most Popular最受欢迎

SaaS MVP

$9,800+ fixed起
⚡ 6–8 week delivery⚡ 6–8 周交付
  • Next.js + NestJS + PostgreSQL
  • Auth / Stripe payment integration认证 / Stripe 支付集成
  • Admin dashboard后台管理面板
  • Weekly demo + client-owned repo每周演示 + 客户自有仓库
Start a project开始项目

Retainer长期维护

$2,500/mo
⚡ Pause anytime⚡ 可随时暂停
  • Feature dev & performance optimization功能迭代 & 性能优化
  • AI-assisted debugging, human reviewAI 辅助排查，人工复核
  • Weekly sync call每周同步会议
  • Flexible pause & resume灵活暂停与恢复
Discuss retainer咨询维护
Selected Work交付案例

Overseas projects, measurable results海外项目 · 结果可量化

Challenge → Solution → Result. Client names withheld under NDA; metrics from production monitoring.挑战 → 方案 → 成果。客户名称因 NDA 保密，数据来自生产环境监控。

-68%P99 latency
US
2024Express → Next.js + NestJS

US Martech · API Rewrite (Featured)美国 Martech · API 重写（精选）

Challenge: 挑战：
Legacy Express callback hell caused 1.2s P99 latency and frequent front-end timeouts.Express 回调地狱导致 P99 延迟 1.2s，前端频繁超时。
Solution: 方案：
Full rewrite with Next.js + NestJS, PostgreSQL hot data, Redis cache, 18 tasks delivered in parallel.Next.js + NestJS 全栈重写，PG 热数据 + Redis 缓存，拆 18 个任务并行交付。
P99 380ms (-68%) → converted to $2.5K/mo retainerP99 降至 380ms → 转为 $2.5K/月长期维护
-40%support tickets客服工单
DE
2025Next.js + FastAPI + LLM Ops

German SaaS · AI Support Copilot德国 SaaS · AI 客服助手

Challenge: 挑战：
Support team drowning in repetitive tickets; needed GDPR-compliant AI answers.重复工单淹没客服团队，需要符合 GDPR 的 AI 应答。
Solution: 方案：
RAG pipeline on EU-hosted infra, human-in-the-loop review, admin analytics panel.欧盟区部署 RAG 管线 + 人工复核 + 管理分析面板。
Tickets -40% in 3 months, GDPR audit passed3 个月工单量降 40%，通过 GDPR 审计
3 mo0 → 1 launch从 0 到 1 上线
CA
2022Next.js + NestJS + WebSocket

Campus Social Platform · Canada北美校园社交平台

Challenge: 挑战：
Build a campus social app from scratch: IM, feed, matching.从 0 到 1 搭建校园社交 APP：即时通讯、动态、匹配推荐。
Solution: 方案：
NestJS microservices + Next.js admin + WebSocket real-time messaging.NestJS 微服务 + Next.js 管理后台 + WebSocket 实时通讯。
Delivered in 3 months → converted to retainer3 个月交付 → 转为长期维护
30+cases closed签约案件
CA
2022Next.js + NestJS + Antd Pro

Immigration Consulting Platform · Canada加拿大移民咨询平台

Challenge: 挑战：
Advisors needed professional consulting + case management system.移民顾问需要专业的客户咨询 + 案件管理系统。
Solution: 方案：
Antd Pro admin + NestJS RBAC + Stripe subscription billing.Antd Pro 中后台 + NestJS RBAC 权限 + Stripe 订阅支付。
Live in 2 months, 30+ cases signed on platform2 个月上线，帮客户签下 30+ 案件
12Kdownloads / 6 mo半年下载量
FI
2023Ionic + NestJS + Redis

Nordic B&B Booking App · Finland北欧民宿预订 APP

Challenge: 挑战：
Cross-platform app + Google Maps / Stripe / SMS integration.跨平台 APP，需对接 Google Maps / Stripe / 短信。
Solution: 方案：
Ionic cross-platform + NestJS third-party API aggregation + Redis cache.Ionic 跨端 + NestJS 聚合第三方 API + Redis 缓存。
iOS/Android in 5 months, 12K downloads in 6 months5 个月双端交付，上线半年 1.2 万下载
2K+peak concurrent峰值在线
EU
2023–24WebRTC + Laravel + Stripe

Live Commerce App · Europe欧洲直播带货 APP

Challenge: 挑战：
Low-latency live streaming + product showcase + cross-border payment.低延迟直播 + 商品橱窗 + 跨境支付。
Solution: 方案：
WebRTC low-latency streaming + Laravel catalog + Stripe multi-currency.WebRTC 低延迟直播 + Laravel 商品系统 + Stripe 多币种。
Shipped in 4 months, 2,000+ peak concurrent viewers4 个月交付，直播间峰值 2000+ 在线
$80KGMV month one首月 GMV
UK
2023–24Monorepo + Next.js + Electron

Knowledge Monetization Platform · UK英伦知识付费平台

Challenge: 挑战：
Consistent web + desktop experience, digital goods + membership.Web + 桌面端一致体验，数字作品交易 + 会员订阅。
Solution: 方案：
Monorepo + Next.js (web) + Electron (desktop) + NestJS (API) + blockchain provenance.Monorepo + Next.js + Electron + NestJS + 区块链确权。
3 platforms in 6 months, $80K GMV first month6 个月三端交付，首月 GMV $80K
3 moto launch交付周期
AU
2023Uniapp + NestJS + Map SDK

Student Rental Platform · Australia澳洲留学生租房平台

Challenge: 挑战：
Asymmetric rental info; needed WeChat Mini Program + H5.租房信息不对称，需要微信小程序 + H5 双端。
Solution: 方案：
Uniapp cross-platform + NestJS + Map SDK + real-time chat.Uniapp 跨端 + NestJS + 地图 SDK + 实时聊天。
Live in 3 months, covering major Melbourne campuses3 个月交付，覆盖墨尔本主要高校房源

* Anonymized case studies independently delivered by 3RX. Client names and exact figures under NDA — references available on a call. * 以上为 3RX 独立交付的脱敏案例，客户名称与具体数据因 NDA 保密，可在电话中提供背书参考。

AI & IP PolicyAI 与知识产权政策

AI-accelerated. Never AI-outsourced.AI 加速交付，但绝不把责任外包给 AI

🔒Your code never trains public models你的代码不会进入公开模型

Client code is never sent to public LLM APIs without written consent. Enterprise / self-hosted endpoints only.未经书面同意，客户代码绝不发送至公开大模型接口，仅使用企业版或自建端点。

👀100% human code review100% 人工代码审查

Every AI-assisted line passes senior engineer review and CI checks before merge. Accountability stays with humans.所有 AI 辅助代码在合并前必经资深工程师审查与 CI 检查，责任始终在人。

📜Full IP transfer知识产权全额转移

Repo lives in your GitHub org from day 1. Full source code + docs handover on final payment. You own everything.仓库从第一天起就在你的 GitHub 组织下，尾款结清后移交全部源码与文档，一切归你。

✍️NDA / DPA ready可签 NDA / DPA

Happy to sign your NDA before any materials are shared. GDPR-compliant data processing agreements for EU clients.分享任何资料前可先签你的 NDA；欧洲客户可签符合 GDPR 的数据处理协议。

How We Work协作流程

One point of contact. Zero chaos.一个联系人，零混乱

1

Scoping需求梳理

Email / chat → written spec → fixed quote within 48h.邮件/私信沟通 → 书面需求文档 → 48 小时内固定报价。

2

Task Split拆分派单

Work broken into trackable tasks in your Linear/GitHub.工作拆分为可追踪任务，直接进你的 Linear/GitHub。

3

Weekly Sync & CR周同步 & CR

Weekly video demo + senior code review on every PR.每周视频演示 + 每个 PR 资深工程师 Code Review。

4

Deliver & Iterate交付 & 迭代

Milestone acceptance, docs handover, optional retainer.里程碑验收、文档移交，可转长期维护。

🛠 Your tools, your ownership: client-owned GitHub repo from day 1 · Slack / Teams · Linear · CI/CD on your infra 🛠 用你的工具，归你所有：仓库从第一天起归属客户 · Slack / Teams · Linear · CI/CD 部署在你的基础设施
What Clients Say客户评价

Trusted across 10+ countries来自 10+ 国家客户的信任

★★★★★

"They cut our API latency by 68% and communicated better than agencies we hired locally. The weekly demos kept everyone aligned.""他们把 API 延迟降了 68%，沟通比我们本地找的外包还顺畅，每周演示让所有人保持同步。"

J
Jason M.CTO, Martech SaaS · USCTO，营销科技 SaaS · 美国
★★★★★

"Fixed price, fixed timeline, and they actually delivered on both. The repo was in our GitHub from day one — zero vendor lock-in anxiety.""固定价格、固定周期，而且两项都兑现了。仓库第一天就在我们的 GitHub，完全不担心被绑定。"

S
Sofia L.Founder, EdTech · UK创始人，教育科技 · 英国
★★★★★

"The 442 payment structure made it easy to trust a remote team we'd never met. Two years on retainer and counting.""442 付款方式让我们能放心跟从未谋面的远程团队合作，维护合作已进入第二年。"

M
Marcus T.Product Lead, PropTech · Australia产品负责人，地产科技 · 澳洲
Payment付款方式

442 milestones. You never pay for vapor.442 里程碑付款，你永远不为空气买单

40%Deposit on contract签约订金
40%Midpoint delivery中期交付
20%Acceptance + source code验收 + 移交源码
🌐 Wise💳 PayPal🏦 Bank transfer (SWIFT)银行转账💱 USDT💳 支付宝 / 微信

Formal contract & invoice for every project. USD, EUR, GBP, CNY and more accepted. Alipay / WeChat Pay available for CNY clients. 每个项目均签正式合同并提供发票。支持美元、欧元、英镑、人民币等多种货币。

FAQ

Questions every founder asks us每位客户都会问的问题

How do we handle the time zone difference?时差问题怎么解决？
We're GMT+8 with a guaranteed 4-hour overlap window for US (morning EST) and EU (afternoon CET) calls. Async-first: Loom videos, written updates, and a weekly live demo — you're never blocked waiting on us.我们位于 GMT+8，保证与美国（EST 上午）和欧洲（CET 下午）各有 4 小时重叠通话窗口。异步优先：Loom 视频、书面进展、每周直播演示，不会因等我们而阻塞。
Who owns the code and IP?代码和知识产权归谁？
You do — 100%. The repository lives in your GitHub organization from day one, and full IP transfer is written into the contract. No lock-in, no hostage code.100% 归你。仓库从第一天起就在你的 GitHub 组织下，合同明确写入知识产权全额转移，绝不绑定。
How exactly do you use AI in development?你们具体怎么用 AI 开发？
AI accelerates scaffolding, test generation and debugging — typically saving 20-30% of routine time, which is why our fixed prices stay low. Your code is never sent to public model APIs without consent, and every line passes senior human review.AI 用于加速脚手架、测试生成与调试，通常节省 20-30% 常规工作量——这也是我们固定价格能做低的原因。未经同意代码不会发给公开模型接口，每行代码都经资深工程师人工审查。
What if I'm not happy mid-project?项目进行到一半不满意怎么办？
The 442 structure protects you: you only pay the next milestone after accepting the current one. If we miss the mark, you walk away with everything delivered so far — code, docs, and credentials.442 结构保护你：验收当前里程碑后才支付下一笔。如果我们不达标，你可以带着已交付的一切离开——代码、文档、账号权限。
Can you sign our NDA / DPA before we talk details?谈细节前能先签我们的 NDA / DPA 吗？
Yes — send it over before we discuss any details. For EU clients we sign GDPR-compliant data processing agreements.可以，讨论任何细节前发过来即可。欧洲客户我们会签符合 GDPR 的数据处理协议。
Who will I actually talk to?我实际对接的人是谁？
One senior tech lead — the same person from first message to final delivery. No account managers relaying messages, no telephone game.一位资深技术负责人——从第一次沟通到最终交付都是同一个人。没有客户经理传话，信息零损耗。

Let's talk about your project聊聊你的项目

Tell us what you're building. You'll get a written scope and fixed quote within 48 hours — no obligation.告诉我们你在做什么，48 小时内给你书面需求梳理与固定报价——无义务。

✉️ hello@3rxai.com 💬 WhatsApp
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