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 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

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 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

Founding Engineer

We are looking for a Founding Engineer to join our core product team at Snazzy. ...

Location

India , Bengaluru

Salary:

Not provided

Helpcare AI

Expiration Date

Until further notice

Requirements

1–5 years of professional full stack engineering experience
Strong skills in ReactJS, Golang, PostgreSQL, and GCP (our core stack)
Someone who thrives in high-ownership, low-structure environments
Bias toward action: you prefer building and iterating quickly over endless discussion
A builder’s mindset — you care about product impact, not just clean code
Comfort with ambiguity and ability to work independently with minimal handholding

Job Responsibility

Architect, build, and ship end-to-end features across backend (Golang, PostgreSQL, GCP) and frontend (ReactJS)
Own critical systems: from designing data models to optimizing user experience
Take full responsibility for performance, security, and scalability of our applications
Collaborate closely with founders to turn product vision into working software
Wear multiple hats — from DevOps to debugging — until the team scales

What we offer

Competitive compensation + potential for future leadership role as the team scales

Fulltime

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

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

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