{"id":5965,"date":"2026-06-08T16:16:08","date_gmt":"2026-06-08T10:46:08","guid":{"rendered":"https:\/\/www.scaler.com\/blog\/?p=5965"},"modified":"2026-06-10T13:40:57","modified_gmt":"2026-06-10T08:10:57","slug":"sde-1-vs-sde-2-vs-sde-3-understand-sde-level-differences","status":"publish","type":"post","link":"https:\/\/www.scaler.com\/blog\/sde-1-vs-sde-2-vs-sde-3-understand-sde-level-differences\/","title":{"rendered":"SDE-1 vs SDE-2 vs SDE-3: Understand SDE Levels"},"content":{"rendered":"\n

In most tech companies, Software Development Engineers (SDEs) are categorized into different levels or tiers based on their skills, experience, and responsibilities. SDE-1, SDE-2, and SDE-3 are the most common divisions across the industry.<\/p>\n\n\n\n

SDE-1<\/strong> typically includes university graduates or freshers with 0\u20132 years of experience. They require guidance and structured training before taking on complex projects.<\/p>\n\n\n\n

SDE-2<\/strong> represents intermediate-level engineers with 2\u20135 years of experience. They take ownership of features, lead smaller projects, and mentor juniors.<\/p>\n\n\n\n

SDE-3<\/strong> (also called Senior SDE, Tech Lead, or Staff Engineer) operates at a senior level with 5\u20138+ years of experience. They drive architectural decisions, influence technical strategy, and lead cross-functional teams.<\/p>\n\n\n\n

Understanding these levels isn’t just about knowing your title \u2014 it’s about understanding what companies expect at each stage, how to progress, and how to position yourself for the next level.<\/p>\n\n\n\n

\"SDE<\/figure>\n\n\n\n

Cross-Company Level Mapping (2026):<\/em><\/strong><\/p>\n\n\n\n

Level Title<\/strong><\/td>Amazon<\/strong><\/td>Google<\/strong><\/td>Microsoft<\/strong><\/td>Meta<\/strong><\/td>Apple<\/strong><\/td>Typical Exp.<\/strong><\/td><\/tr>
Junior \/ SDE-1<\/strong><\/td>L4<\/td>L3<\/td>SDE-1 (Lvl 59\u201361)<\/td>E3<\/td>ICT2<\/td>0\u20132 yrs<\/td><\/tr>
Senior \/ SDE-2<\/strong><\/td>L5<\/td>L4<\/td>SDE-2 (Lvl 62\u201363)<\/td>E4<\/td>ICT3<\/td>2\u20135 yrs<\/td><\/tr>
Senior SDE \/ SDE-3<\/strong><\/td>L6<\/td>L5<\/td>Principal SDE (Lvl 65)<\/td>E5<\/td>ICT4<\/td>5\u20138 yrs<\/td><\/tr>
Staff \/ Principal<\/strong><\/td>L7<\/td>L6<\/td>Partner (Lvl 67+)<\/td>E6<\/td>ICT5<\/td>8+ yrs<\/td><\/tr>
Distinguished \/ Fellow<\/strong><\/td>L8\/L10<\/td>L7\/L8<\/td>Distinguished Eng<\/td>E7+<\/td>ICT6<\/td>12+ yrs<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Note: These are approximations. Exact mapping varies by team, interview bar, and company. An Amazon L5 hire may enter at a higher bar than an internal L4\u2192L5 promotion. For the most current total compensation data (base + RSU + bonus), <\/em>Levels.fyi<\/em><\/a> is the most comprehensive resource.<\/em><\/p>\n\n\n\n

<\/span>What is a Software Development Engineer (SDE)?<\/strong><\/span><\/h2>\n\n\n\n

A Software Development Engineer (SDE) is a professional responsible for designing, developing, testing, and maintaining software applications and systems. SDEs work across the full software development lifecycle \u2014 from requirements gathering and architecture to coding, testing, deployment, and ongoing maintenance.<\/p>\n\n\n\n

SDEs collaborate with product managers, designers, QA engineers, and other cross-functional teams to build software that meets user needs and business goals. Strong programming skills, problem-solving abilities, system design knowledge, and effective communication are essential for success in this role.<\/p>\n\n\n\n

Turn your curiosity into action. Join our free live masterclasses.<\/h3>\n\n\n\n\n\n\n \n \n\n \n