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Certifications其他PSD I
其他助理级项目管理

Professional Scrum Developer I (PSD I)

PSD I 认证验证开发团队成员在 Scrum 框架下综合运用软件工程最佳实践(TDD、CI/CD、结对编程)交付高质量产品增量的专业能力。

Try the first chapter freePractice questions
65
Official exam questions
90 min
Exam duration
70/100
Passing score
JR ACADEMY / CERTIFICATION PREP

JR Academy practice bank

287practice questions
Build your foundation3 learning chapters
Practice with purposeFocused practice · answer explanations
Test your readinessMock exams · review

287 practice questions available

OverviewLearning pathFAQReviews
01

Understand the certification

Scrum.org 面向开发者的认证,考 Scrum 框架 + 软件工程实践(TDD/CI/CD/结对编程)。如果你已有 PSM I,PSD I 的边际价值不大 — 两者 Scrum 基础部分重合约 50%。

Professional Scrum Developer I(PSD I)由 Scrum.org 颁发,专门面向在 Scrum 团队中从事开发工作的技术人员。考试 80 题 / 60 分钟 / $200 USD,通过分数 85%(68/80),终身有效无需续期。首次未通过可免费重考一次。

PSD I 与 PSM I 的核心区别:PSM I 100% 考 Scrum 框架知识(Scrum Guide 2020),PSD I 约 50% 考 Scrum 框架 + 50% 考软件工程最佳实践。工程实践部分覆盖:TDD(Test-Driven Development,红绿重构循环)、CI/CD(持续集成的定义和实施条件)、结对编程(Pair Programming 的适用场景和反模式)、代码审查(Code Review 的有效实践)、技术债务管理(识别和偿还策略)、Definition of Done 与代码质量标准。

考试的难点在于 85% 的通过线 + 60 分钟的时间压力。80 题 60 分钟 = 每题 45 秒,没有回头检查的时间。Scrum.org 的考试风格是:题目本身不长,但选项之间的区别很微妙 — 经常两个选项都"基本正确",要选"最 Scrum"的那个。

PSD I 没有工作经验要求,理论上任何人都可以考。但如果完全没有软件开发经验,TDD 和 CI/CD 的实践题会很难答。

Exam at a glance

Exam code
PSD I
Provider
其他
Format
single-choice / multiple-choice
Language
English
Validity
3 years
Official certification page

Skills in focus

测试驱动开发(Test-Driven Development / TDD)持续集成与持续部署(CI/CD)结对编程(Pair Programming)与代码审查(Code Review)技术债务管理(Technical Debt Management)Definition of Done 制定与代码质量标准Scrum 框架下的跨功能团队协作

Learning outcomes

  • 深入理解 TDD 红绿重构循环和测试优先设计原则在 Sprint 中的实际应用
  • 掌握 CI/CD 流水线在 Scrum 团队中的最佳实践,包括自动化测试与持续部署策略
  • 清晰理解技术债务的识别与偿还策略,以及 Definition of Done 中代码质量标准的制定
  • 以充分准备通过 PSD I 考试,在 Scrum 开发团队中展现软件工程专业能力

Who this is for

  • 软件开发工程师(前端、后端、全栈),希望在 Scrum 团队中提升专业工程能力
  • DevOps 工程师与 QA 工程师,需要理解 Scrum 框架下的持续集成与测试实践
  • 已持有 PSM I 的 Scrum Master,希望深入了解 Scrum Developers 的工程职责
  • 技术团队负责人,希望在团队引入 TDD、CI/CD 等现代开发实践

Before you start

  • 熟悉 Scrum Guide 2020 基础概念(Scrum 角色、事件、Artifacts)
  • 具备基础编程经验,了解软件开发生命周期
  • 建议了解单元测试和版本控制(Git)基础知识
02

Your learning path

3 chapters

01PSD I 考试概览:Scrum 开发团队职责与软件工程实践框架Free02TDD、CI/CD、代码质量与 Scrum 工程实践核心知识Free03Exam Preparation & Practice100 min
View the full learning path

Plan your preparation

Learning hours
61h
With relevant experience
2-3 weeks
Starting from scratch
4-6 weeks
Daily study
1-2h

Included in your preparation

  • 305+ 道题深度覆盖 TDD、CI/CD、代码质量等 PSD I 高频考点,含详细中文解析
  • 模拟真实 PSD I 考试:80 题,60 分钟限时,挑战 85% 通过线
  • AI 辅导重点讲解软件工程实践在 Scrum 框架中的应用场景和常见误区
  • 智能错题追踪,精准识别 TDD 测试设计、CI/CD 流水线配置等薄弱技术概念

1. 第一阶段:Scrum Guide 2020 精读(3-5 天)

Scrum Guide 2020 只有 13 页(scrum.org 免费下载),但每句话都可能出题。重点理解:Scrum 的三大支柱(Transparency/Inspection/Adaptation)、三个角色的职责边界(尤其是 Developers 的自组织范围)、五个 Event 的目的和时间箱。PSD I 的 Scrum 基础题跟 PSM I 完全一样,这部分必须满分。

2. 第二阶段:软件工程实践专项(1-2 周)

TDD 红绿重构:写一个失败的测试(Red)→ 写最少代码让测试通过(Green)→ 重构代码(Refactor)。考试会考 TDD 三步的正确顺序和每步的目的。CI/CD:持续集成的 4 个条件(共享代码库、自动化构建、自动化测试、频繁提交)必须背。结对编程的 Driver/Navigator 角色区分也是考点。

3. 第三阶段:Scrum.org Open Assessment + 模考(1 周)

Scrum.org 免费提供 Scrum Open Assessment(30 题模考)和 Developer Open Assessment。必须在 Open Assessment 上稳定 100% 才有信心考 PSD I — 因为真实考试难度更高(选项更模糊)且通过线 85%。考前一天再过一遍 Scrum Guide 和 TDD/CI/CD 的关键定义。

03

Career value

LinkedIn 全球搜 "PSD I" 或 "Professional Scrum Developer" 的岗位几乎没有直接要求 — 开发者岗位看的是技术栈和项目经验,不是 Scrum 认证。PSD I 的价值更多是个人学习层面:系统了解 Scrum 框架下的工程实践规范。

在实际招聘中,PSM I(Scrum Master)的认可度远高于 PSD I(Developer)。原因很简单:Scrum Master 是一个独立角色需要认证来证明资质,而 Developer 的能力通过代码面试和项目经验来评估。

最适合考 PSD I 的人:1) 刚从瀑布/传统开发转到 Scrum 团队的开发者,想系统学习 Scrum 下的工程实践;2) 已有 PSM I 的人想补充开发视角;3) 考 Scrum.org 认证收集者(PSM I + PSPO I + PSD I 三件套)。

不适合的人:简历上只需要一张 Scrum 认证的人(直接考 PSM I 更划算)、非开发岗位(PM/BA 等,考 PSPO I)。

Software Developer (Scrum Team)Full Stack EngineerDevOps EngineerQA Engineer软件开发工程师全栈工程师
澳洲
AUD 90,000 – 140,000
美国
USD 85,000 – 135,000
新加坡
SGD 65,000 – 110,000

Preparation tips

  • **45 秒一题不能犹豫** — 读完题 + 选项,10 秒内没有答案就选第一直觉然后跳过。回头改答案的时间几乎没有。
  • **选"最 Scrum"的答案** — Scrum.org 的出题风格是:多个选项看起来都行,但只有一个最符合 Scrum Guide 的原文表述。
  • **Open Assessment 100% 是底线** — 如果 Scrum Open 和 Developer Open 打不到 100%,说明 Scrum 基础还有漏洞,真实考试会更难。
  • **Definition of Done 是跨领域考点** — Scrum 基础和工程实践都会考 DoD 的定义、维护责任(Developers 决定)、和质量标准的关系。

Common mistakes

  • **低估 85% 通过线** — 12 道容错空间,80 题 60 分钟没有检查时间。Scrum 基础题必须接近满分才能给工程实践题留容错。
  • **TDD 三步顺序搞错** — Red → Green → Refactor 是固定顺序。考试会给变体场景(比如"先重构再写测试")让你判断对错。
  • **混淆 Continuous Integration 和 Continuous Deployment** — CI = 频繁合并代码 + 自动构建 + 自动测试。CD(Deployment)= 自动部署到生产环境。PSD I 考的是 CI 的定义和实施条件,不是 CD。
  • **Scrum Guide 2020 的变化没注意** — 2020 版把 "Development Team" 改成了 "Developers",取消了 "self-organizing" 换成 "self-managing"。用旧版 Scrum Guide 备考会在措辞题上丢分。
04

Before you register

How difficult is the PSD I exam?

The exam is 60 minutes long with 80 questions, requiring an 85% passing score. It focuses on software development practices within the Scrum framework, including TDD, CI/CD, pair programming, and software design. We recommend 1-2 months of systematic preparation.

How much does the PSD I exam cost?

The PSD I exam costs $200 USD, administered by Scrum.org. The certification is valid for life with no renewal required. You get one free retake if you don't pass on the first attempt.

Does the PSD I exam require writing code?

The exam does not require actual coding, but it tests conceptual understanding of software engineering practices such as Test-Driven Development (TDD), Continuous Integration/Continuous Deployment (CI/CD), code refactoring, and technical debt management. Understanding how these practices apply within Scrum teams is essential.

What development practices does the exam cover?

Key topics include: software design principles within Scrum, Test-Driven Development (TDD) and Behavior-Driven Development (BDD), Continuous Integration and Continuous Deployment (CI/CD), pair programming and code review, technical debt management, cross-functional team collaboration, and implementing the Definition of Done.

What is the difference between PSD I and PSM I?

PSD I targets development team members and focuses on software engineering practices and technical skills within Scrum. PSM I targets Scrum Masters and focuses on Scrum framework theory and team facilitation. They complement each other, and developers are encouraged to pursue both.

How can I prepare effectively for PSD I?

Start by thoroughly reading the latest Scrum Guide, focusing on the Developers' responsibilities. Then study software engineering best practices (TDD, CI/CD, design patterns, etc.). Use our platform's 287 practice questions for systematic training, and the AI tutoring feature can help you deeply understand each topic.

05

Learner experiences

Loading reviews…

已有 PSM I(97%),PSD I 的 Scrum 基础题对我来说是送分。TDD 和 CI/CD 的题目是区分度 — 不是问你"TDD 是什么",而是"在以下场景中应用 TDD 的正确做法是什么"。有实际 TDD 经验的人明显有优势。60 分钟 80 题确实紧,我做完只剩 3 分钟。

全栈开发 4 年

SaaS 公司 Scrum Team · 90% · 2 weeks

零 Scrum 经验从头学,Scrum Guide 读了 3 遍才真正理解 Sprint Planning 的两个话题(What + How)。工程实践部分靠吃老本 — 之前写过单元测试所以 TDD 题能答。85% 通过线是真的高,80 题只能错 12 道,险过。建议 Open Assessment 打不到 95% 就别急着考。

J. Li

后端开发,转行 1 年 · 86% · 5 weeks

06

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Start with the first chapter.

2 free chapters · Full preparation from $29

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