An Introduction to Primer

Primer is the unified infrastructure for global payments. We give finance and payments teams the visibility and control to reduce

complexity, improve performance, and capture more revenue - all from a single platform.

Backed by Sofina, Peak XV Partners, ICONIQ, Tencent, Accel, and Balderton, we're building the payments layer the world's best

companies rely on.

Watch our showcase >

Read up on our $100m Series C

Learn more about our culture >

WHICH TEAM WILL YOU BE JOINING?

You’ll help build the entire product security surface for a company processing payments at scale: threat modelling, security

review, compliance, incident escalation, and the multi-year AppSec roadmap. You'd be the second hire, and the person that function

finally gets to share the work with.

This is a hands-on delivery role, and a genuinely formative one. You’ll help set the security strategy and architecture; you take

real ownership of the work that turns it into reality, reviews, research, automation, and the day-to-day partnership with

engineering teams. You'll have a clear direction to work within and someone senior to learn from, while still owning your projects

end to end.

Security at Primer sits close to the engineering teams it protects rather than off to one side, so you'll spend real time embedded

with the people building Cloud, Infra, and product. For someone who wants to go deep in product security with room to grow, there

are few better seats than being the second engineer in a function that's only now scaling.

WHAT WILL YOU BE DOING?

Running security reviews and threat modelling on features and systems across Primer's product, and turning findings into clear,

actionable guidance for the teams shipping them

Independently planning and delivering your own security projects, from initial design through to rollout

Building tooling and automation that makes future reviews faster and cheaper to run

Coordinating penetration testing and tracking remediation through to closure

Supporting the recurring compliance work (SOC2, PCI), including evidence collection and remediation tracking against fixed

audit windows

Contributing to AppSec roadmap initiatives across areas like application threats, AI security, supply chain security, and ASPM

Picking up proactive security work, threat research and hands-on investigation, that a one-person function has never had the

capacity for

Working alongside Cloud, Infra, and GRC on the security aspects of their projects

WHAT WE'RE LOOKING FOR

Working experience in product or application security: you've done security reviews or threat modelling and can spot the risks

that matter

The ability to read and write code, not just review it. You're comfortable building small tools and automation rather than only

filing findings

Sound judgement about risk. You can weigh a real threat against a theoretical one and explain your reasoning clearly

The ability to plan and deliver your own work independently once you understand the direction, while knowing when to pull in

the senior engineer

Clear communication with engineers who aren't security specialists, since most of your impact lands through their work

Nice to have:

Exposure to compliance frameworks like SOC2 or PCI, or genuine appetite to learn them

Background in payments, fintech, or another regulated, high-stakes domain

Interest in areas like supply chain security, detection engineering, or AI security

YOU MAY NOT LIKE IT HERE

It's remote-first and high autonomy. You'll get direction, but nobody checks your progress daily. If you need close structure,

this will be uncomfortable

You'll move between proactive project work and reactive BAU, and priorities will shift as audits and incidents land. Tolerating

that change is part of the role.

✅ A TYPICAL INTERVIEW PROCESS

An initial intro call with a Talent Partner

An interview with the Hiring Manager

Challenge Stage - Contextualised to the role

A final, values-alignment interview

WHAT'S THE CULTURE LIKE AT PRIMER?

We're building a culture where people can do their best work and be proud of the impact they have. You'll be working with people

who are mission-driven, smart, and reflective, and who are genuinely invested in building exceptional products and delivering

success for our merchants.

We work remotely, and have done since day one. We believe that building a successful, profitable company goes beyond proximity. We

invest in our relationships through great remote working practices and thoughtfully designed face-to-face time, including

workations, our annual company retreat, and access to co-working spaces across most major cities.

The work is challenging. Scaleups are a challenge, and building category-defining products is a challenge. But there's a

meaningful difference between a challenge and a struggle. At Primer, the right challenge comes with the right support: strong

onboarding, a collaborative environment, and a team that is genuinely invested in your success. It's never something you face

alone.

OUR BENEFITS

🌍 We are fully remote and globally distributed; and have been since day one

💰 Competitive share options

🌴 Uncapped holiday, with 25 days minimum to be taken

🗣️ Co-working space access across major cities

📅 Workations & Company Retreat

💻 The best equipment for your role

🏠 £500 towards your home office setup

🔎 Generous learning budget

🏥 Private Medical Insurance

📈 A broad set of additional perks and benefits (depending on location)

DON’T MEET EVERY SINGLE REQUIREMENT?

At Primer, we're dedicated to building a diverse, inclusive, and authentic workplace. If you're excited about this role but your

experience doesn't align perfectly with every qualification listed, we encourage you to apply. You may be the right candidate for

this or other roles.

Primer is committed to the equal treatment of all current and prospective employees and adopts a zero-tolerance approach to

discrimination, regardless of age, disability, sex, sexual orientation, pregnancy and maternity, race or ethnicity, religion or

belief, gender identity, marriage and civil partnership, or any other background or belief.

Roll

Security Engineer

Plats

Poland

Publicerad

10 juni

Sista ansökningsdag

17 augusti

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