Sr Front-End Developer

Company : Eliassen Group
Location : Sunnyvale, CA, 94085
Posted Date : 15 September 2025
Job Type : Other
Category : Software Development
Occupation : Developer
Job Details
Our fast-paced, innovative cybersecurity client, part of a larger established insurance organization, is expanding their software engineering team. They specialize in B2B and B2C SaaS products, protecting millions of customers from cyber threats. With a diverse team based in the San Francisco Bay Area, they offer a collaborative and dynamic environment. They are seeking a Senior Software Engineer with strong JavaScript/TypeScript, ReactJS, and NodeJS experience to join this exceptional team.
We can facilitate w2 and corp-to-corp consultants. For our w2 consultants, we offer a great benefits package that includes Medical, Dental, and Vision benefits, 401k with company matching, and life insurance.
Rate: $85 - $95 / hr. w2
Responsibilities
Feature Development & Delivery
- Deliver new technical features for B2B and B2C SaaS products.
- Work closely with fellow engineers, the Product Manager, and UX Designer to scope engineering requirements and timelines for features.
- Anticipate and communicate blockers and delays before they require escalation.
- Continuously help improve the engineering culture, including practices and processes.
Programming & Implementation
- Write and deliver clean, maintainable, and well-tested code.
- Implement front-end UI components using TypeScript and React Framework.
- Implement RESTful API endpoints using TypeScript and Node.JS.
- Participate in peer code reviews to maintain code quality and adhere to engineering best practices.
- Collaborate with developers to build reusable code and libraries for future use.
- Implement software security requirements
Software Design
- Design API endpoints for features, define schemas, and generate documentation.
- Design reusable and scalable React components for the front-end UI.
- Make sound software design decisions with a focus on customer experience.
- Consistently create optimal designs adhering to architectural best practices.
- Consider system performance, scalability, and reliability when defining technical designs.
Testing & Quality Assurance
- Deliver well-tested code.
- Write unit tests for APIs and front-end components.
Maintenance & Support
- Troubleshoot, debug, maintain, and improve existing software.
- Fix bugs, performance issues, and security vulnerabilities in the software.
- Occasionally be on-call to resolve customer issues and address server alerts as needed.
Experience Requirements
- 5+ years of experience in software engineering.
- Experience writing code in JavaScript/TypeScript, HTML5, CSS3, or related applications.
- Experience with front-end technologies and frameworks, preferably React.
- API design and development experience. Node.JS experience desired.
- Experience with application, network, and cloud security.
- Experience with building and architecting microservices.
- Strong computer science fundamentals and problem-solving/analytical skills.
- Familiarity with version control systems (e.g., Git, SVN).
- Understanding of agile software development lifecycle and DevOps principles.
- Preferred ability to write unit tests. Ideally, experience with testing frameworks such as Mocha, Jest, etc.
- Preferred understanding of SaaS (Software as a Service) product architectures, AWS/Azure/Google Cloud Stack, and networking.
- Required strong verbal and written communication skills, including the ability to communicate and explain technical decisions.
- Education Requirements
- Bachelor's degree in computer science, or equivalent work experience
Skills, experience, and other compensable factors will be considered when determining pay rate. The pay range provided in this posting reflects a W2 hourly rate; other employment options may be available that may result in pay outside of the provided range.
W2 employees of Eliassen Group who are regularly scheduled to work 30 or more hours per week are eligible for the following benefits: medical (choice of 3 plans), dental, vision, pre-tax accounts, other voluntary benefits including life and disability insurance, 401(k) with match, and sick time if required by law in the worked-in state/locality.
Please be advised- If anyone reaches out to you about an open position connected with Eliassen Group, please confirm that they have an Eliassen.com email address and never provide personal or financial information to anyone who is not clearly associated with Eliassen Group. If you have any indication of fraudulent activity, please contact .
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