Senior Full Stack Engineer Job at Formula Recruitment (London)

Senior Full-stack Engineer, Product Partnerships

Braze's open and flexible customer engagement platform is designed to seamlessly...

Location

United States , New York City

Salary:

154800.00 - 275400.00 USD / Year

Braze

Expiration Date

Until further notice

Requirements

6+ years of full-stack development experience
Strong understanding of design, data structures, and algorithms
Excellent communication and organizational skills
Proven track record of tackling ambiguous and complex problems
Professional experience in Ruby, Ruby on Rails, React, SQL, and NoSQL databases, distributed systems, API design/monitoring/best practices
Professional experience building software at scale
Experience with agile processes

Job Responsibility

Take ownership of large-scale projects, from expanding our e-commerce offerings to optimizing the performance and resiliency of our complex backend systems that power integrations like Shopify
Be a driving force behind our most critical initiatives
Shape the future of our integration platform
Design and code high-impact, foundational features
Contribute to the team's technical and product strategy
Lead by example, mentoring other engineers and ensuring the work of the team is maximally effective

What we offer

Competitive compensation that may include equity
Retirement and Employee Stock Purchase Plans
Flexible paid time off
Comprehensive benefit plans covering medical, dental, vision, life, and disability
Family services that include fertility benefits and equal paid parental leave
Professional development supported by formal career pathing, learning platforms, and a yearly learning stipend
A curated in-office employee experience, designed to foster community, team connections, and innovation
Opportunities to give back to your community, including an annual company-wide Volunteer Week and donation matching
Employee Resource Groups that provide supportive communities within Braze

Senior Full Stack Engineer

We are looking for an experienced Senior Full Stack Software Engineer to join ou...

Location

Estonia , Tallinn

Salary:

Not provided

Bolt

Expiration Date

Until further notice

Requirements

Experience in JavaScript and Node.js / C++ /Java or any OO language
Knowledge of major frontend frameworks and experience with API design and development
University degree in a technical subject (Computer science, Mathematics or similar)
4+ years of experience in software development
Good English and communication skills
Solid understanding of algorithms, data structures, experience with any SQL (MySQL/PostgreSQL)

Job Responsibility

Architecting, designing, developing, and deploying Bolt's growing backend and frontend systems
Designing and building Bolt's growing backend and frontend systems
Coding mostly in TypeScript
Paying attention to detail, proactively fixing upcoming bugs and solving technical challenges
Contributing ideas to our product development roadmap
Giving a hand to your fellow colleagues, participating in code reviews and architecture discussions

What we offer

Rewarding salary and stock option package
Flexibility of working in a hybrid mode with a minimum of 2 days in the office each week
Take care of your physical and mental health with wellness perks

Fulltime

Senior Full Stack Engineer, Data Platform - Experimentation

We are looking for an experienced Senior Full Stack Software Engineer to join ou...

Location

Germany , Berlin

Salary:

Not provided

Bolt

Expiration Date

Until further notice

Requirements

A full-stack engineer with 5+ years of tech experience, including 2+ years in frontend/full-stack roles
Strong Front-end skills: JavaScript/TypeScript, CSS, and HTML
Solid Back-end understanding: experience building APIs and using relational databases (SQL)
Excellent communication and above-average soft skills for collaborating with cross-functional teams and talking to users
A strong UX mindset to ensure simple, self-explanatory design and intuitive interfaces
Proactive problem-solving with a product mindset, focused on value and driving impact

Job Responsibility

Take full ownership of the UI/UX of the AB Platform, including redesign of the existing tools and adding AI capabilities
Contribute directly to improving key features, focusing on performance and user experience
Collaborate with the team to build and optimise the Experimentation Platform used by hundreds of internal users
Work closely with product teams and users to ensure the platform is intuitive and easy to use for non-technical users, including conducting user interviews
Help maintain and evolve high-traffic (200k RPS) back-end services

What we offer

Get a rewarding salary and stock option package that lets you focus on doing your best work

Senior Full Stack Software Engineer

We're looking for a Senior Fullstack Software Engineer to join our team, passion...

Location

United States

Salary:

146700.00 - 230300.00 USD / Year

Atlassian

Expiration Date

Until further notice

Requirements

5+ years of industry experience working as a Full Stack Engineer
Bachelor's or Master's degree with a preference for Computer Science degree
Specialization in Javascript (ES6), HTML5, CSS
Experience with modern Javascript frameworks (e.g., React, AngularJS, Vue)
Familiarity with server-side software development in software design, object-oriented programming. (preferred experience with Java, NodeJs)
Experience with modern testing frameworks (e.g., Jest, Cypress, Mocha, Chai)
Familiarity with A/B testing
Good understanding of front-end architecture and data-driven development
Experience building and integrating REST APIs, GraphQL
Experience with SQL and basic data and numerical analysis

Job Responsibility

Guide the technical direction and implementation of large-scale product features
Evaluate trade-offs between correctness, robustness, performance and customer impact to ensure we build the right solution
Collaborate with product, design and engineering to influence product strategy and direction
Ship well-tested, secure, reliable, and maintainable code while keeping our customers best interests in mind
React to how our product is used in the wild, and help to fix bugs and production issues as they occur
Contribute to code reviews, documentation, and complex bug fixes with security, performance and reliability in mind
Mentor and level up the skills of your teammates by sharing your expertise

What we offer

Health and wellbeing resources
Paid volunteer days

Fulltime

Senior Full Stack Engineer

Architect, build, and scale high‑performance, accessible web applications that d...

Location

Salary:

Not provided

10up

Expiration Date

Until further notice

Requirements

Think in systems and components, not just pages
Proactive problem-solver who thrives on digging into ambiguity
Strong point of view, held loosely
Comfortable with the full stack as a single, interconnected challenge
Natural collaborator and translator
2 or more years of experience working in a consulting firm or agency environment
Hands-on experience with enterprise content management systems (CMS)

Job Responsibility

Architect and build dynamic, content-rich web experiences that turn marketing funnels into engaged communities
Own the end-to-end delivery of key product features, from concept to deployment and beyond
Elevate the team's velocity and craft by introducing and socializing tools and practices
Bridge the gap between ambitious creative vision and technical reality

What we offer

Competitive salaries and benefits
Flexibility
Creativity
Cutting-edge technology

Fulltime

Senior Full Stack Engineer

Our company website is the centerpiece of our brand — the public source of truth...

Location

Ireland , Dublin

Salary:

Not provided

Intercom

Expiration Date

Until further notice

Requirements

8+ years of experience in full stack development, with expertise in JavaScript, HTML, and CSS
Expert in front-end frameworks such as React, Next.js, Tailwind
Experience in CMS platforms (such as Contentful and Sanity) and marketing tools (e.g. Google Tag Manager, Marketo)
Experience in CI/CD tools (such as CircleCI) to streamline and automate development workflows
Familiarity with infrastructure as code tools such as Terraform, and cloud platforms like AWS (Vercel, CloudFront, S3, etc.)
Experience with A/B testing and familiarity with analytics tools to drive data-informed design and development decisions
Knowledge of performance optimization techniques and best practices for fast-loading, responsive websites
Experience in writing tests for front-end components, with familiarity in testing frameworks (e.g., Jest, Mocha, Cypress)
Strong problem-solving skills and the ability to work independently and as part of a team
Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience)

Job Responsibility

Design, build, and maintain end-to-end web solutions — from modern UIs to backend services, APIs, and infrastructure
Collaborate with design, brand, marketing, and content teams to deliver seamless, performant experiences across web and mobile
Develop backend logic and APIs, manage data flows, and implement systems that integrate with third-party platforms
Optimize website performance by applying best practices in front-end development, including lazy loading, and efficient asset management
Set up and manage infrastructure using tools like Vercel, AWS, Cloudfront, Terraform, and CI/CD pipelines (e.g., CircleCI)
Implement and maintain web analytics, and support A/B testing for data-driven decisions
Stay current with emerging technologies and trends to continually improve our development processes and user experience
Be comfortable writing backend software. We look for engineers to be able to unblock themselves end to end
Build using the best tools in the industry. We invest heavily in AI-powered developer tools that remove friction and help you focus on solving meaningful problems

What we offer

Competitive salary and equity in a fast-growing start-up
We serve lunch every weekday, plus a variety of snack foods and a fully stocked kitchen
Regular compensation reviews - we reward great work!
Pension scheme & match up to 4%
Peace of mind with life assurance, as well as comprehensive health and dental insurance for you and your dependents
Flexible paid time off policy
Paid maternity leave, as well as 6 weeks paternity leave for fathers, to let you spend valuable time with your loved ones
If you’re cycling, we’ve got you covered on the Cycle-to-Work Scheme. With secure bike storage too
MacBooks are our standard, but we also offer Windows for certain roles when needed

Fulltime

Senior Full Stack Engineer

Our company website is the centerpiece of our brand — the public source of truth...

Location

United Kingdom , London

Salary:

Not provided

Intercom

Expiration Date

Until further notice

Requirements

8+ years of experience in full stack development, with expertise in JavaScript, HTML, and CSS
Expert in front-end frameworks such as React, Next.js, Tailwind
Experience in CMS platforms (such as Contentful and Sanity) and marketing tools (e.g. Google Tag Manager, Marketo)
Experience in CI/CD tools (such as CircleCI) to streamline and automate development workflows
Familiarity with infrastructure as code tools such as Terraform, and cloud platforms like AWS (Vercel, CloudFront, S3, etc.)
Experience with A/B testing and familiarity with analytics tools to drive data-informed design and development decisions
Knowledge of performance optimization techniques and best practices for fast-loading, responsive websites
Experience in writing tests for front-end components, with familiarity in testing frameworks (e.g., Jest, Mocha, Cypress)
Strong problem-solving skills and the ability to work independently and as part of a team
Bachelor’s degree in Computer Science, Software Engineering, or a related field (or equivalent practical experience)

Job Responsibility

Design, build, and maintain end-to-end web solutions — from modern UIs to backend services, APIs, and infrastructure
Collaborate with design, brand, marketing, and content teams to deliver seamless, performant experiences across web and mobile
Develop backend logic and APIs, manage data flows, and implement systems that integrate with third-party platforms
Optimize website performance by applying best practices in front-end development, including lazy loading, and efficient asset management
Set up and manage infrastructure using tools like Vercel, AWS, Cloudfront, Terraform, and CI/CD pipelines (e.g., CircleCI)
Implement and maintain web analytics, and support A/B testing for data-driven decisions
Stay current with emerging technologies and trends to continually improve our development processes and user experience
Be comfortable writing backend software. We look for engineers to be able to unblock themselves end to end
Build using the best tools in the industry. We invest heavily in AI-powered developer tools that remove friction and help you focus on solving meaningful problems

What we offer

Competitive salary and equity in a fast-growing start-up
We serve lunch every weekday, plus a variety of snack foods and a fully stocked kitchen
Regular compensation reviews - we reward great work!
Pension scheme & match up to 4%
Peace of mind with life assurance, as well as comprehensive health and dental insurance for you and your dependents
Flexible paid time off policy
Paid maternity leave, as well as 6 weeks paternity leave for fathers, to let you spend valuable time with your loved ones
If you’re cycling, we’ve got you covered on the Cycle-to-Work Scheme. With secure bike storage too
MacBooks are our standard, but we also offer Windows for certain roles when needed

Fulltime

Senior Full Stack Engineer

As a Senior Full Stack Engineer within the Platform Services group, you will be ...

Location

Israel , Netanya; Tel Aviv

Salary:

Not provided

JFrog

Expiration Date

Until further notice

Requirements

5+ years of programming experience with a strong focus on TypeScript, Vue (or other modern frameworks like React or Angular), and Node.js
Deep architectural understanding of modern frontend applications and best practices
Extensive experience with development infrastructure tools and processes in large-scale environments
Experience with production-level, mission-critical systems
Strong troubleshooting skills, comfortable with CLI, log analysis tools, and debugging techniques
Knowledge and hands-on experience working in a modern CI environment, including version control (e.g., Git), build tools, and CI servers

Job Responsibility

Lead the development of foundational frontend components and services for the Platform Services group, ensuring other teams have robust and reliable building blocks
Write high-quality, testable, and efficient code, using TypeScript and Vue
Develop and maintain production-level Node.js services to support platform-wide features
Provide mentorship and technical feedback to other engineers on the team, fostering a culture of learning and growth
Initiate and promote innovative ideas for the continuous improvement of our frontend and Node.js infrastructure and tool functionality
Integrate cutting-edge AI tools and methodologies into development and research workflows to boost efficiency and foster innovation. Stay current with the latest advancements in AI

Senior Full Stack Engineer

Formula Recruitment

Location:
United Kingdom , London

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
December 08, 2025

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Job Description:

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Job Posted:December 08, 2025

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