Startup jobs in Portsmouth - Page 3Create job alerts

We’re looking for engineers who don’t wait for tickets to tell them what to do! The kind who enjoy jumping into messy problems, talking to real users, sniffing out bottlenecks early, and sketching solutions that actually ship.If ambiguity energizes you, ownership feels natural, and you like havi

Full Stack Engineer (AI & Cybersecurity Startup) - EU Remote. We're partnering with a well-funded AI startup (stealth for now) that’s building at the intersection of. B2B SaaS experience and startup mindset.

A top tier VC back start up are building software that helps charities raise more money, and they’re looking for engineers ready to own that responsibility!.This isn’t a role with neat specs or endless tickets.You’ll be dropped into real problems with real impact, working directly with the peo

I’m working with a well-funded early-stage BioAI startup applying machine learning to a hard, underexplored biological problem with real implications for climate resilience and food security.

One of the fastest moving AI startups in London, backed by some of the world’s top VCs and founded by real entrepreneurs with multiple exits 💸. A defining role at one of London’s most ambitious startups.

Profitable | Tier 1 VC-Backed | 1–2% equity | £70-100k Salary | UK visa sponsor | Build core product powering 400+ independent restaurants.We are building the operating system for restaurants of the future.Help automate the legacy industry and reduce manual labour to zero.If you want your code ru

Mission‑driven and patient‑centered, comfortable in a fast‑paced startup.

Role: Full-Stack Product Engineer.We’re looking for engineers who just get it.Top tier developers who can talk to clients, figure out potential blockers/bottlenecks, brainstorm end-to-end solutions, and execute ambiguous work without the need for tickets or being told to do it!.Hands-on experience

We’re seeking a Senior BioMEMS / Microfluidics Engineer to join our growing team and help build the future of wearable biochemical monitoring.You will lead the design, prototyping, and manufacturing of microneedle-based interstitial fluid sampling and microfluidic subsystem - a core part of our we

Looking for a job is f*cking hard!.You send off tons of applications only to get ghosted by recruiters and to never get any feedback.We understand how tough it is and that’s why we created Tangent - so you can.Tangent lets you bypass the recruiters by connecting you directly with your future colle

Seeking Expressions of Interest for Commission‑Only Sales Roles in Europe.SaaS visual collaboration and note‑sharing tool for businesses and educators.We’ve just exited beta and are beginning commercial sales.Learn more at to business users across.You will operate r

You will lead the entire financial engine of a high-growth fintech platform that bridges B2B lending and consumer rewards.This hands‑on role involves owning the master financial model, managing a complex loan book, and overseeing day‑to‑day operations like payroll and compliance.You will work

A dynamic finance-focused company in Greater London seeks a Head of Finance to take ownership of financial operations, prepare budgets, and provide crucial cash flow updates.Ideal candidates will possess a strong accounting background, ideally with experience from a Big Four firm, and a proactive, d

Co-founder of a climate tech startup – Entrepreneurs & Business experts. Join Carbon13’s 5‑month Venture Builder Programme and become a co‑founder of a scalable climatetech startup. Strong ability to scale quickly and build a startup for a net‑zero future.

Reporting to EMEA B2B Marketing leadership, with alignment to the global Startups Marketing team, you will own the regional execution of OpenAI's startup field marketing strategy—translating global priorities into high-impact, locally relevant programs that drive startup adoption, pipeline support

A purpose-led beauty tech startup is seeking a Financial Accountant to manage day-to-day financial operations.

Fast-growing legal tech startup. Significant equity ownership in a high-growth startup with massive traction and real paying users.

A fast-growing startup in London seeks an enthusiastic Associate to join their team. Candidates should have a high fluency in AI, experience in startups, and an infectious passion for the tech industry.

Mentor startups on their overall technology and business aspects and establish credibility within the startups and investors community. Represent Stripe in the startup ecosystem and take up speaking opportunities in startup events and platforms. Well networked in the UK Startup Ecosystem and should

This range is provided by Virgin StartUp. Our diverse, 180‑strong team in London and New York, supports every facet of the Virgin family, including Virgin Unite, our entrepreneurial foundation, and Virgin StartUp, empowering UK entrepreneurs. Virgin StartUp, born out of Virgin’s entrepreneurial

A pioneering health tech startup in England is seeking a Founder’s Associate to work closely with the founding team.

A leading financial innovation firm in Greater London seeks a motivated Founder Associate to lead its growth.You will be responsible for managing all aspects of the company, building a high-performing team, and ensuring successful execution of conferences.Ideal candidates possess strong leadership s

Join a high-growth fintech startup building the financial home for European scale-ups. High-ownership environment with meaningful equity and a front-row seat to scaling a pre-seed startup into a global unicorn. Partner directly with startup founders and finance teams to ensure they maximize value fr

Fast‑growing AI infrastructure startup seeking a DevOps Engineer to build and scale a first‑of‑its‑kind RLOps platform. Fast‑growing AI infrastructure startup. Join a well‑funded startup backed by top‑tier investors, offering significant equity and the chance to shape a culture of exce

A dynamic medical device company in Clapham, London, seeks a Contract Quality Engineer to oversee quality processes in line with industry standards.The ideal candidate will have experience in a start-up environment, ISO13485, ISO9001, and be adept in nonconformity reporting and internal auditing.Thi

A super ambitious startup is looking for a Product Designer to enhance the human experience of their software.

A big hello from the team at Compuco!.At Compuco we empower socially responsible organisations with the digital tools they need to build a better world.We work with non profit organisations across their digital stack, helping reimagine the way they work so that they can focus on impact.We’re on th

A marketing recruitment service for startups is seeking candidates for marketing lead or manager roles where you'll be an early hire, driving strategy and execution for various campaigns. Required are 1-4 years of marketing experience and a passion for startup environments. This is a unique opportun

A cutting-edge AI firm in the Greater London area is looking for a Startup Partnerships UK lead to drive the adoption of its AI capabilities within the startup ecosystem. The ideal candidate will have significant experience in product management, a deep understanding of the startup landscape, and st

A leading startup recruitment agency is looking for a motivated Commercial Associate to work with exciting VC-backed startups in the UK. Average base salaries range from £60-80K OTE, depending on the startup and role seniority.

While each role has a clear functional focus, you’ll gain broad exposure to how a modern startup operates and how different teams work together in an AI-first environment. We split our team in half, using Software & AI to automate accounting whilst also providing the best service in the world to y

A fast-growing startup in London is seeking a Growth Marketing Manager to drive user growth through performance-driven campaigns across TikTok, Instagram, and Twitter/X.

A technology business in the United Kingdom is seeking a qualified lawyer to join as a sole legal advisor for an interim role of at least 6 months.The ideal candidate will have over 6 years of experience in corporate law and a business-oriented mindset, working closely with senior executives on vari

A leading cryptocurrency platform is seeking a skilled React Native Developer to join their dynamic team in London or New York.The ideal candidate will have strong React Native experience and a passion for the crypto industry.This role involves creating functional software solutions, collaborating w

Fast-growing urban mobility startup.

VC-backed marketing tech startup. Entrepreneurial mindset with the ability to thrive in an ambiguous, fast-paced startup environment.

A global B2B SaaS company is seeking a Field Marketing Specialist to manage field events and programs aimed at startup audiences.

Fast-growing industrial AI startup. Join a well‑funded startup on track to increase bookings 5x YoY with significant market expansion potential. Proven track record of hiring exceptional technical talent at high‑bar, early‑stage startups or research labs.

A leading pet food company in London is seeking a Sales Manager to lead their dynamic sales team.This role involves driving performance through data analysis and team motivation, ensuring an optimal environment for team success.The ideal candidate has at least 2 years of sales management experience

A leading startup incubation firm in the UK is seeking ambitious entrepreneurs to build and scale their own startups. You will receive a salary during the startup phase, along with up to €500k in funding. Ideal candidates possess excellent communication skills in English and are willing to fully c

A leading career transition service in the UK is seeking ambitious individuals to break into startup sales. You will work with high-growth, VC-backed startups, engaging in prospecting and lead qualification. Attractive average salaries of £40–80K OTE are offered, depending on the specific role an

Chief Technology Officer (CTO) / Tech Lead - FinTech Startup - London - Highly Competitive Salary. Ideally, you will be a hands‑on leader, experienced in building from the ground up in a rapid‑growth startup environment.

Are you a confident, service-driven Receptionist who thrives in a fast-paced, client-facing environment? Do you enjoy being at the heart of a buzzing office where energy, collaboration, and professionalism meet? This is a really exciting opportunity to join an ontrend business as it launches for suc

Join a well‑funded fintech startup backed by top‑tier VCs during a phase of rapid employer market expansion.

An entrepreneurial support organization in Greater London seeks ambitious entrepreneurs to build and scale their startups. The ideal candidate is ready to take full responsibility for their startup and aims for significant revenue.

Relevant client experience (especially startups or VAT setup). We are recruiting on behalf of a newly established startup seeking an experienced accountant to support with VAT, Making Tax Digital (MTD) compliance, and general accounting as they grow. Experience supporting startups or small businesse

A financial software company is seeking a driven Account Executive to lead sales efforts.In this role, you will manage the full sales cycle, selling to senior finance leaders and collaborating closely with the founding team.You should have 4-10 years of experience in SaaS sales, particularly in fina

A rapidly growing D2C brand in the UK is seeking a Head of Finance to take charge of core financial operations.The ideal candidate will manage global P&L reporting and compliance, driving budgeting, forecasting, and improving financial processes.The role requires ACA, ACCA, or CIMA qualifications wi