Founding Frontend Engineer Job at Carbon13 (Cambridge)

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

Founding Frontend Engineer

Flick is defining the future interface for AI native filmmaking. Think Figma and...

Location

United States , Sunnyvale

Salary:

100000.00 - 200000.00 USD / Year

YC Work at a Startup

Expiration Date

Until further notice

Requirements

Experience owning and leading technical initiatives on high-performance web applications
Strong expertise with modern front-end tooling (React, TypeScript, build systems, CI/CD)
Deep experience optimizing complex UX interactions, especially in editors, canvases, visual builders, or multimedia tools
Ability to design scalable UI architectures and manage large, dynamic client-side state
A passion for creating fast, intuitive, and beautiful creative interfaces
Startup mindset: you thrive in fast-moving environments, take ownership, and solve ambiguous problems at scale

Job Responsibility

Lead the architecture and development of our editor UI from the ground up (canvas, timeline, node graph, playback)
Rapidly prototype and iterate on new creative workflows to validate ideas and user experience
Establish best practices for code quality, performance, testing, and maintainability
Collaborate closely with design, product, and AI backend teams to shape the end-to-end user experience
Drive key technical and product decisions as part of the founding engineering team

Fulltime

Founding CTO

We’re an early-stage startup building a 0→1 product with strong founder convicti...

Location

United States , Miami

Salary:

125000.00 - 150000.00 USD / Year

G2i Inc.

Expiration Date

Until further notice

Requirements

Proven experience as a Founding Engineer, Lead Engineer, or CTO in an early-stage startup
Demonstrated success building and shipping a 0-to-1 product
Strong full-stack expertise, including backend systems, frontend frameworks, and data modeling
Experience designing systems with scalability and growth in mind
Comfortable working onsite in Miami, especially during the initial months
Willingness to balance execution today with leadership tomorrow

Job Responsibility

Lead the 0-to-1 build of the company’s core product
Architect and implement a cost-efficient, scalable tech stack
Own full-stack development, including backend services, frontend delivery, and data modeling
Make early architectural decisions with scalability and maintainability in mind
Act as a hands-on individual contributor in the early phase
Hire, mentor, and lead the engineering team as the company grows
Partner closely with founders on product vision, execution strategy, and technical trade-offs
Establish best practices for engineering, deployment, and security

What we offer

meaningful equity

Fulltime

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

Senior Software Engineer, Frontend

As a Senior Frontend Engineer at Serval, you'll play a pivotal role in shaping t...

Location

United States , San Francisco

Salary:

200000.00 - 300000.00 USD / Year

Serval

Expiration Date

Until further notice

Requirements

4+ years of experience as a frontend focused software engineer
Experience with zero-to-one development: You should have built new products or systems from the ground up
Deep appreciation for and commitment to delivering outstanding user experiences
Exceptional communication skills and a proven ability to work cross-functionally
Comfortable with the pace and ambiguity of a fast-growing startup environment
Degree in Computer Science or a related engineering field

Job Responsibility

Work closely with our CTO to build new product capabilities from the ground up
Be a champion for user experience, incorporating a deep understanding of our users to guide design decisions alongside the founding team
Set the foundational system architecture and select key technologies for the codebase
Help us ship V1 of Serval and deliver on our technical and product roadmap
Help establish engineering best practices and standards within the team. Mentor junior engineers and contribute to a culture of technical excellence

What we offer

Offers Equity
comprehensive health coverage
flexible PTO
daily lunches and snacks
onsite gym access
regular team events and offsites

Fulltime

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

Founding Full Stack Engineer

Oximy is building the control layer that makes AI safe and manageable for the wo...

Location

United States , San Francisco

Salary:

125000.00 - 250000.00 USD / Year

YC Work at a Startup

Expiration Date

Until further notice

Requirements

Strong full-stack experience
Comfort moving across frontend, backend, and systems code
Experience shipping production software used in real environments
Comfort working close to the OS (or curiosity to learn quickly)
Good judgment around tradeoffs
Clear communication
Bias toward ownership

Job Responsibility

Build core product surfaces
Work closely to the system boundary (network, user kernels etc)
Ship user-facing features, backend services, and native components across macOS and Windows
Work on performance, data correctness, and pipelines
Help shape the architecture that governs how AI usage is observed, interpreted, and acted on at scale
Work on core product surfaces across Pulse, Spend, and Oversight
Build high-signal UIs that explain AI usage to security, IT, finance, and AI teams
Build backend services and APIs that ingest and query large volumes of usage data
Build native macOS and Windows applications that operate close to the OS
Work on performance, reliability, and correctness across the stack

What we offer

Meaningful equity
Early-stage ownership

Fulltime

Founding Frontend Engineer

Carbon13

Location:
United Kingdom , Cambridge ▼
London

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
January 13, 2026

Looking for more opportunities? Search for other job offers that match your skills and interests.

Similar Jobs for Founding Frontend Engineer

Senior Frontend Engineer (Application Security)