176 to 200 of 246 Remote/Hybrid Senior Full-Stack Engineer Jobs

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Reading, Berkshire, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Northampton, Northamptonshire, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Ipswich, Suffolk, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Portsmouth, Hampshire, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Woking, Surrey, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Gloucester, Gloucestershire, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Peterborough, Cambridgeshire, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Canterbury, Kent, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Brighton, East Sussex, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Barnsley, South Yorkshire, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Newtownabbey, Co. Antrim, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack (UK)

Hiring Organisation
First Up
Location
Southend-on-Sea, Essex, UK
world-class customer base. Now we need your help. Ready to make a difference in the world? Job Summary The Sr. Software Engineer will join the team responsible for Firstup's public APIs, Agentic tools, third-party integrations with enterprise systems such as HRIS platforms, and shared platform … equivalent experience. 5+ years building reliable, performant applications and microservices. Strong proficiency in TypeScript and Node.js. Ruby experience is a plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one specialisation: networking, security, serverless, event streams, or similar. ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Newport, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Bradford, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Dundee, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Reading, Berkshire, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Stevenage, Hertfordshire, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Southport, Merseyside, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Canterbury, Kent, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Colchester, Essex, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Plymouth, Devon, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Guildford, Surrey, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Derby, Derbyshire, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Luton, Bedfordshire, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...

Remote Sr. Software Engineer, Fullstack

Hiring Organisation
First Up
Location
Wolverhampton, West Midlands, UK
your help. Ready to make a difference in the world? Job Summary We're looking for a Senior Full Stack Engineer who thrives at the intersection of craft and scale. You'll design and deliver large-scale, multi-tenant cloud services — with … polyglot mindset — you evolve with the tech. Familiarity with Ruby on Rails, TypeScript, Node.js, or React.js is a strong plus. Proven full-stack experience across frontend (React.js), backend, and database layers. Technical depth in at least one engineering domain: distributed systems, multi-tenant SaaS, application databases ...