Founding Frontend Engineer Job at YC Work at a Startup (Sunnyvale)

Senior Frontend Engineer (Application Security)

At Easygo, our DevSecOps team is at the heart of our engineering, security and o...

Location

Australia , Melbourne

Salary:

Not provided

Easygo Gaming

Expiration Date

Until further notice

Requirements

Bachelor's/Master's degree in Computer Science or equivalent practical experience
7+ years of hands-on experience in software engineering, with a primary focus on security engineering
Strong understanding of code architecture and design principles
Excellent problem-solving skills and the ability to thrive in a fast-paced, dynamic environment
Strong communication skills for effective collaboration with teams and stakeholders
Analytical mindset to address complex technical challenges and devise innovative solutions
Positive attitude and eagerness to learn new technologies to grow as a security engineer

Job Responsibility

Lead by example, and drive the adoption of secure software development lifecycle (SSDLC) practices. This includes performing threat modelling, providing secure coding guidance to development teams, and embedding security requirements early in the design phase
Own, improve, execute and manage various security tests, including SAST, DAST, and SCA, to identify vulnerabilities. Analyse test results and prioritise findings. Fix what you find, and work with developers to ensure timely remediation
Implement and maintain automated security controls within the CI/CD pipeline. This involves integrating security tools to enable continuous security testing and monitoring, making security an integral part of the DevSecOps process
Deploy and configure Web Application Firewalls (WAFs) and Runtime Application Self-Protection (RASP) solutions to protect from real-time attacks. Respond to urgent application security incidents as needed
Take ownership of the platform vulnerability management program. This involves tracking, prioritising, and remediation of security flaws found in applications, ensuring all vulnerabilities are addressed and verified
Actively engage in hands-on coding, testing, debugging, and troubleshooting to ensure code quality, scalability, and maintainability
Write efficient, scalable, and maintainable code, adhering to coding standards and best practices
Innovate within the team by pushing for improvements and driving constructive changes to enhance team performance and efficiency
Analyse complex problems and provide effective solutions, contributing to team goals and initiatives
Lead and independently complete medium-sized projects or initiatives from start to finish

What we offer

Access to over 9,000 courses across our Learning and Development Platform
EAP access for you and your family
Be rewarded with lucrative annual bonuses
Give back with a paid volunteer day
Fuel your day with daily breakfast and open pantries brimming with unlimited snacks and refreshments, all on the house
Break up the week with on site remedial massage Wednesdays
In house full-time barista’s providing you your daily coffee needs
Weekly team lunches and happy hour in the office from 4pm on Fridays
Enjoy a bustling office with the option for up to 2 days work from home per week
Fun office environment with pool tables, table tennis and all your favourite gaming consoles

Fulltime

Founding Full-Stack Software Engineer – AI for Biopharma

Founding Full-Stack Engineer role at Equator, an AI-native startup building next...

Location

Spain , Barcelona

Salary:

70000.00 EUR / Year

Blu Selection

Expiration Date

Until further notice

Requirements

4–6 years of software engineering experience (mid to senior level)
Strong backend engineering skills with Python
Proficiency in React, Next.js, TypeScript, Node.js
Experience building data-heavy or versioned backend systems
Strong clean-code discipline and architectural thinking
English (Advanced/C1+)
Valid Spain work permit (no sponsorship available)

Job Responsibility

Architect scalable, auditable backend systems (Python, PostgreSQL, modern frameworks)
Build APIs enabling seamless collaboration between humans and AI agents
Develop clean, modular frontend interfaces using React, Next.js, and TypeScript
Implement and maintain data-heavy systems and structured knowledge frameworks
Write clean, precise code and contribute to strong engineering standards
Collaborate closely with founders, designers, and early users to deliver impactful features
Influence product, technical direction, and architectural decisions as a founding engineer

What we offer

Gym membership

Fulltime

New

Founding Product Engineer

As our Founding Product Engineer, you'll architect and build engaging user exper...

Location

United States , San Francisco

Salary:

150000.00 - 250000.00 USD / Year

Flint

Expiration Date

Until further notice

Requirements

Frontend engineering experience (Typescript, Next.js, Tailwind CSS)
Regularly use AI IDEs like Cursor or Windsurf to code
Passionate about helping companies make beautiful and performant web presences
Genuinely interested to push the boundaries of what AI is capable of
Take ownership from problem to solution, learning whatever you need to succeed
Love building MVPs, testing them with users, and iterating quickly

Job Responsibility

Architect and build the core product interface using React, Next.js, and Tailwind CSS
Create and implement the configuration systems that control page design elements and components
Be a key stakeholder in discussions on implementing design systems and component libraries in Flint website templates
Build "taste" into the AI by developing algorithms that understand design principles and brand consistency
Prototype rapidly with users and translate learnings into durable features
Own projects end-to-end: from prototypes that test new ideas with users to production systems that serve as the foundation for our platform

What we offer

Historic office in Jackson Square (with 2 rooftops and a shower)
A crazy upside-down battlestation
20 PTO days a year and full health benefits
Lunch and a fully stocked snack bar at the office, incl. Cometeer coffee pods
Dog friendly
Competitive salary + equity

Fulltime

New

Founding Engineer (Full-Stack)

Companies waste billions on bad ads, mismatched landing pages, and poor budget a...

Location

United States , San Francisco

Salary:

150000.00 - 200000.00 USD / Year

YC Work at a Startup

Expiration Date

Until further notice

Requirements

Bachelor’s or Master’s degree in Computer Science or a related field, or equivalent practical experience
Minimum of 2 years full-time experience in software engineering, preferably in early-stage startups
Frontend Expertise: Proficiency in building responsive frontends using React/Next or Vue.js and the Nuxt framework
Backend Expertise: Strong backend development skills in TypeScript/Node.js and experience with PostgreSQL or relational databases
Strong creative judgment with a sense for marketing
Demonstrated ability to work independently
Based in or willing to relocate to San Francisco
on-site presence required (Visa sponsorship will be provided if needed)

Job Responsibility

Full-Stack Development: Design, build, and maintain scalable applications using Node.js, TypeScript, and Nuxt (Vue)
System Architecture: Architect and manage robust database schemas with PostgreSQL and Supabase, ensuring data integrity and performance
Infrastructure & Operations: Manage deployments and background jobs using Render and Inngest, and assist in maintaining dedicated deployments on Microsoft Azure
Product Ownership: Own projects across the full lifecycle, including concept development, implementation, deployment, and ongoing maintenance
User-Centric Design: Apply sound product and design judgment to build user-centric software features aligned with current market and customer needs
Collaboration: Collaborate closely with the operations team and customers via Slack and Notion to ensure technical solutions are aligned with user requirements

What we offer

Be one of the first employees at a well-funded startup
Solve a massive problem in a massive market
Take ownership and grow quickly
Culture: fast-moving, ambitious, fun, humble

Fulltime

New

Founding AI Engineer

Flint is defining the next generation of websites: ones that can constantly buil...

Location

United States , San Francisco

Salary:

150000.00 - 250000.00 USD / Year

Flint

Expiration Date

Until further notice

Requirements

You are a product-first engineer
You have built and deployed AI products that real users depend on
You have extensive hands-on experience with prompt engineering, context optimization, and model fine-tuning
You have strong full-stack engineering skills with experience integrating AI into web applications
You regularly use AI IDEs like Cursor or Windsurf to code
You take ownership of problems from start to finish and are eager to learn whatever you need to succeed
You’re comfortable in a fast-paced environment with evolving requirements
You have enthusiasm for building MVPs and iterating based on user feedback

Job Responsibility

Designing and implementing production-grade agentic systems that power web experiences and marketing workflows, leveraging advanced prompt engineering and multi-agent architectures to do so
Architecting and optimizing RAG (Retrieval-Augmented Generation) systems with context engineering
Strengthening our engineering processes through robust evals, observability, and testing
Developing and maintaining the core application across frontend, backend, and infrastructure
Shaping our technical vision and leading architectural discussions. You'll make foundational decisions that influence both Flint's technical architecture and engineering culture.
Creating and testing prototypes to gather rapid feedback from users

What we offer

Historic office in Jackson Square (with 2 rooftops and a shower)
A crazy upside-down battlestation
20 PTO days a year and full health benefits
Lunch and a fully stocked snack bar at the office, incl. Cometeer coffee pods
Dog friendly
Competitive salary + equity

Fulltime

New

Founding Product Engineer

We're searching for a Founding Product Engineer who'll own the entire user-facin...

Location

United States , San Francisco

Salary:

225000.00 - 275000.00 USD / Year

YC Work at a Startup

Expiration Date

Until further notice

Requirements

Proven experience shipping complete products, not just individual features
Serious frontend skills: comfortable with React/Next.js, CSS, and modern web APIs
A sharp eye for design and motion
Solid backend chops: can build APIs, work with databases, and troubleshoot production issues
Enough infrastructure comfort to handle AWS, containers, and Kubernetes
Ability to move independently in ambiguous situations
Real taste and strong opinions about what makes software feel good to use

Job Responsibility

Take full ownership of product areas: scoping, designing, building, and iterating on them
Build clean, fast, polished web interfaces with Next.js that feel almost native
Write simple, performant backend services in Bun/TypeScript
Deploy and manage infrastructure on AWS (EKS, S3, and the usual suspects) using Kubernetes
Obsess over the small things, from loading states, smooth animations, solid error handling to edge cases
Make smart product tradeoffs with little hand-holding
Help shape our product culture and engineering standards as one of the first engineers on the team

What we offer

bonus
equity
benefits
relocation assistance

Fulltime

Senior Quality Assurance Engineer

As a Senior Quality Assurance Engineer at Corporate Tools, you’ll help us build ...

Location

United States

Salary:

120000.00 USD / Year

Corporate Tools

Expiration Date

Until further notice

Requirements

A bachelor's degree in a technical field or equivalent certification (e.g. ISTQB)
At least 4 years of experience in leading testing efforts for complex software or web products, including test planning and execution
Experience writing and maintaining large, automated test suites
Familiarity with CI/CD pipelines, Agile methodologies, and Version Control Systems like Git
Proficiency with technical tools used for testing (e.g. Android Studio, Selenium, Playwright, Appium, Postman)
Knowledge of SQL for database testing and verification
Able to work in an agile environment with a focus on continuous integration
Strong communication skills and attention to detail
Experience mentoring/coaching in a technical environment
Experience using Jira and Confluence to track and communicate actions, priorities, and goals

Job Responsibility

Conducts Agile QA for bugs and stories completed by the development team
Conducts regression tests against software applications
Build proficiency in writing and maintaining automated tests
Identify, document, and track defects and issues, providing clear and detailed descriptions with steps to reproduce and their potential impact on end-users
Evaluate the user experience of products, providing feedback on usability and accessibility of new and existing features
Anticipate impacts of new features beyond ticket acceptance criteria and develop appropriate edge case tests
Prior to large feature or product releases, collaborate closely with product teams to plan and implement thorough testing
Analyze common bugs found through QA processes and work with software and frontend devs to address them in earlier phases of the development process
Act as a mentor and lead by example, demonstrating effective testing, communication and ticket management techniques

What we offer

100% employer-paid medical, dental and vision for employees
Annual review with raise option
22 days Paid Time Off accrued annually, and 4 holidays
After 3 years, PTO increases to 29 days. Employees transition to flexible time off after 5 years with the company—not accrued, not capped, take time off when you want
The 4 holidays are: New Year’s Day, Fourth of July, Thanksgiving, and Christmas Day
Paid Parental Leave
Up to 6% company matching 401(k) with no vesting period
Quarterly allowance
Use to make your remote work set up more comfortable, for continuing education classes, a plant for your desk, coffee for your coworker, a massage for yourself... really, whatever
Open concept office with friendly coworkers

Fulltime

Software Engineer - UI with React JS

This role has been designed as ‘Hybrid’ with an expectation that you will work o...

Location

India , Bangalore

Salary:

Not provided

Hewlett Packard Enterprise

Expiration Date

Until further notice

Requirements

BS or MS Data Science, Machine Learning, Statistics, Mathematics, Computer Science, or a related field
5-10 years of Proficiency in the core technologies of the web: Javascript, HTML, CSS, ReactJS, NodeJS, and it's core principles
Experience with micro-frontend
Experience with implementing responsive web designs and writing unit and integration tests
Experience in working with one or more of the following infrastructure components like Postgres, Kafka, ElasticSearch, Redis
Familiarity with Git
Experience working in Linux based Operating Systems
Understanding and/or Cloud Programming knowledge with Dockers and Containers is a plus
Developing multi-threaded applications
Programming knowledge with inter-process communication and distributed systems is a plus

Job Responsibility

Assist in design and implementation of micro-service-based cloud network monitoring responsive Web UI Design and Implementation
Contribute to the integration and testing of the developed application
Document software designs and procedures
Use of Juniper router data to develop network monitoring applications
Assist with troubleshooting and root cause analysis of problems found, both in-process and escalations from the field
Demonstrate exemplary behavior in following proper engineering processes to manage risks and systematically achieve high product quality

What we offer

Health & Wellbeing
Personal & Professional Development
Unconditional Inclusion

Fulltime

Founding Frontend Engineer

YC Work at a Startup

Location:
United States , Sunnyvale

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
January 07, 2026

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