Sr. Software Engineer

LinkedIn is the world's largest professional network, built to create economic opportunity for every member of the global workforce.

Mountain View, CA, USA

$121,000 - $198,000

Security

Senior Software Engineer

Hybrid

5,000+ Employees

2+ years of experience

Enterprise SaaS

Description For Sr. Software Engineer

LinkedIn, the world's largest professional network, is seeking a Senior Software Engineer to join their Security Infrastructure team. This role is crucial in building and maintaining the security infrastructure that protects LinkedIn's massive scale operations and member data.

The position focuses on ensuring service identity management, strong attestation, and secure communication across LinkedIn's infrastructure. You'll be working on authentication and authorization solutions that impact LinkedIn's entire infrastructure, making this an exciting opportunity to work on security at scale.

As a Senior Software Engineer, you'll be part of the SecInfra team, whose vision is to provide non-repudiable identity for every resource and ensure all data access is safe and cryptographically protected. The team builds highly reliable and scalable services that enable engineering teams across LinkedIn to create and integrate secure features while protecting member data.

The role offers exciting challenges in building secure, performant, and user-intuitive solutions that operate 24x7. You'll work with cutting-edge open-source projects and have the opportunity to influence their development. The team has a multi-year roadmap focused on building secure and usable authentication authorization solutions.

LinkedIn offers a hybrid work environment, combining remote work with office presence, and provides comprehensive benefits including health and wellness programs. The company culture is built on trust, care, inclusion, and fun, creating an environment where everyone can succeed. This is an excellent opportunity for someone passionate about security infrastructure and eager to work on solutions that impact millions of users worldwide.

Last updated 3 months ago

Responsibilities For Sr. Software Engineer

Design and develop secure, performant, and user intuitive solutions for security infrastructure at LinkedIn's massive scale
Drive rapid product innovation and delivery while maintaining engineering excellence
Produce high quality software that is unit tested, code reviewed and checked in regularly
Participate in design and code reviews
Partner with peers, leads and internal customers to define scope and prioritize features
Mentor other engineers
Work with the open-source community

Requirements For Sr. Software Engineer

Java

Python

Rust

Kubernetes

BA/BS Degree in Computer Science or related technical discipline, or related practical experience
2+ years of industry experience in software design, development, and algorithm related solutions
2+ years' experience programming in object-oriented languages
Hands on experience developing distributed systems, large-scale systems, databases and/or Backend APIs
Experience with Security and/or Cryptography preferred
Experience with technologies such as Kubernetes, SPIRE, GraphQL, GRPC, Apache Kafka, cert-manager

Benefits For Sr. Software Engineer

Medical Insurance

401k

Health and wellness programs
Time away programs
Annual performance bonus
Stock options
Comprehensive benefits package

LinkedIn is the world's largest professional network, built to create economic opportunity for every member of the global workforce.

Mountain View, CA, USA

$121,000 - $198,000

Security

Senior Software Engineer

Hybrid

5,000+ Employees

2+ years of experience

Enterprise SaaS

Find the length of the longest substring without repeating characters in a given string s. Provide examples and edge cases to consider, such as empty strings or strings with only one character. Optimize for performance and time/space complexity, especially for large inputs.

Data Structures & AlgorithmsMedium

Given a string s, find the length of the longest substring without repeating characters. For example: Input: s = abcabcbb Output: 3 Explanation: The answer is abc, with the length of 3. Input: s = bbbbb Output: 1 Explanation: The answer is b, with the length of 1. Input: s = pwwkew Output: 3 Explanation: The answer is wke, with the length of 3. Notice that the answer must be a substring; pwke is a subsequence and not a substring. Input: s = Output: 0 Implement an algorithm in your chosen language to efficiently determine the length of the longest substring without repeating characters in the given input string. Consider the time and space complexity of your solution. Can you optimize your approach to achieve the best possible performance, especially for very large input strings? What are the edge cases to consider, such as empty strings or strings with only one character?

Strings

Sliding Windows

How would you design the LinkedIn feed?

System DesignMedium

Let's design the LinkedIn feed. Consider the user experience, key features, scalability, and personalization aspects. For instance, how would you prioritize content from connections versus suggested content? How would you handle different content types like text, images, videos, and articles? How do you design a system to ensure that the feed remains responsive even with millions of active users? How would you personalize the feed to show users content they are most likely interested in, and what data would you use to achieve this personalization? Finally, how would you prevent the spread of misinformation or harmful content within the feed?

Graphs

Dynamic Programming

Database Problems

Why do you want to work at LinkedIn?

Behavioral

Okay, let's explore your interest in LinkedIn. To help me understand your motivations, could you elaborate on why you are particularly interested in working at LinkedIn? I'm looking for specific reasons beyond just wanting a job. For instance, are you drawn to LinkedIn's mission of connecting professionals? Perhaps you're excited about the scale of the platform and the impact you could have on millions of users? Or maybe you admire the company's culture and values, such as its emphasis on transformation, integrity, collaboration, and results. It would be helpful to hear about specific projects or initiatives at LinkedIn that resonate with you. Have you been following LinkedIn's work in AI, education, or small business support? Are there any particular LinkedIn products that you find innovative or impactful? Are you inspired by the work of a specific team? Furthermore, how do you see your skills and experience aligning with LinkedIn's goals? What unique contributions do you believe you can make to the company, and how would working at LinkedIn help you grow professionally? I'm interested in understanding how your personal values align with LinkedIn's core principles, and why you believe this is the right place for you to advance your career.

Interested in this job?

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