Senior Product Designer

Permanent employee, Full-time · Hybrid - London

About Smartnumbers
We are on a mission to stop fraud and improve customer authentication. Fraud is a huge problem affecting millions of people, it costs the UK nearly £7bn and represents 40% of all crime. Too often the solution has been to put in place cumbersome authentication processes that frustrate genuine customers, cause inefficiencies for organisations and fail to prevent fraud. 
 
We are changing this by providing organisations with real-time insight into the risk of a caller. We combine patented machine learning technology with our deep domain knowledge to prevent contact centre fraud. 
 
We recognise that we need to work together to fight fraud, that is why we have fostered strategic partnerships with leading global organisations like Amazon, BT, Genesys and NICE. Together, we protect the UKs largest retail banks, investment banks and emergency services. We also believe in developing our people and developing high performing teams, reflected by our Platinum Investors in People accreditation. 
What you'll be working on
This is a design team of one. You will own the entire design function at Smartnumbers: user research, interaction design, prototyping, design system, and facilitation. You will work as a close partner to two Product Managers and their engineering teams across our fraud prevention and upcoming new products. 
This is an opportunity for a designer who wants real ownership and influence. You will have direct customer access, a tight Design, Product, and Success team feedback loop, and no layers of approval. You are the design authority. You decide which customers to speak to, which problems to investigate, and how the product should feel. You work directly with Product Managers and engineers to ship work grounded in user evidence. 
Success in this role means features ship with user validation, design quality remains high across the portfolio, and the team consistently makes better product decisions because of the research, facilitation, and design thinking you bring.
What you'll need for the role
Smartnumbers values diversity of experience. Candidates should have a strong combination of several of the following skills, competencies and experience: 
 
Essential  
  • Circa5 to 8 years of product design experience in B2B SaaS or enterprise software environments
  • Strong user research skills: interview design, usability testing, synthesis, and problem framing
  • Confident and proactive communicating directly with enterprise customers without needing support
  • Expert in interaction and visual design: clarifying data, indicating relationships, and hinting at behaviour using colour, style, iconography, typography, and visual hierarchy
  • Proficient in Figma (or equivalent) for wireframing, prototyping, high-fidelity mockups, and engineering handoff
  • Ability to create and facilitate workshops with cross-functional stakeholders to drive outcomes
  • Demonstrable use of AI design tools to accelerate design output and increase personal throughput
  • Proven experience as the sole or primary designer on a product team, comfortable owning the full design function without peer support or a design manager
  • Understanding of design systems and component-based UI architecture
  • Good understanding of the agile product development process, with the ability to enhance user experience in small iterative deliveries
  • Organised documentation practices so research and design decisions are accessible to the wider team on demand
 
Desirable  
  • Experience designing data-heavy, analytics, or investigation-style interfaces
  • Understanding of WCAG AA accessibility standards
  • Familiarity with fraud, security, fintech, or financial services domains
  • Comfort with product analytics and usage data to inform design decisions
  • Experience with the customer discovery process: hypothesis, test, learn, iterate
 
Personal attributes  
  • Initiative-driven. You identify problems and opportunities and act on them without waiting to be asked. You book the customer calls, run the tests, and bring insights.
  • Customer champion. You have genuine empathy for product users and their workflows. You are energised by speaking to customers and translating their needs into better products.
  • Collaborative. You work effectively with Product Managers, engineers, data scientists, and commercial teams. You adapt your communication to your audience.
  • Comfortable with ambiguity. You thrive in environments where the problem space is not fully defined. You bring structure to uncertainty rather than waiting for clarity.
  • Analytical. You can understand customer use cases, interpret usage data, and use evidence to support product direction and design decisions.
  • AI forward. You actively seek out and adopt new tools and techniques to multiply your impact. You see AI as a force multiplier for design quality and speed.
What we can offer you
As well as a competitive salary of circa £70k per annum, we also offer a comprehensive benefits package, covering a variety of areas, both professional and personal. These benefits include:  
  • Hybrid working style, with the expectation of two days in the office (with a great City of London office base!)
  • Family friendly benefits including paid parental leave policies
  • An extensive health insurance policy for you, withan optionto add your family members 
  • A workplace pension withHargreaves Lansdown 
  • Life insurance of 4 x your salary 
  • A discretionary annual bonus of up to 10% of your salary
  • Weekly self-development time to spend exploring your professional development interests
  • 25 days of annual leave (plus bank holidays), your birthday off, and an opportunity to buy up to 5 days annual leave per year
  • A holistic wellbeing support plan encompassing a variety of offerings toassistyou. We provide you with a monthly £50 allowance to fund activities to best support your wellbeing as well as workshops and training to provide tools and guidance. Additionally, there is a wide-ranging employeeassistanceprogramme available to advise on personal,familyor financial matters,and alsofun social events during the year. 
The application process
We have a simple 5 stage application process: 
  1. 20–30-minuteTeams or phone screening call with the hiring manager
  2. 45–60-minuteTeams deep-dive with hiring manager
  3. Take-home task(ample time given to prepare) with follow-up meeting to present findings, with small panel of interviewers
  4. Team Fit,Bar-raiser and HR interviews
Smartnumbers is committed to promoting equal opportunities in employment. You will receive equal treatment regardless of age, disability, neurodiversity, gender, gender identity, gender reassignment, marital or civil partner status, pregnancy or maternity, race, colour, nationality, ethnic or national origin, religion or belief, sex and sexual orientation. We welcome all applications for this role.  
We are committed to providing reasonable support/adjustments in our recruiting processes. If you need support, please reach out to the hiring contact. 


Please see our privacy notice: https://smartnumbers.com/privacy-notice  
About us

We help companies in the fight against fraud. Our solutions help protect organisations from downstream fraud by ensuring the contact centre stays secure. Through our consortium of customers and partners, we enable organisations to work together to fight fraud by sharing intelligence and best practice.


As a software company with a telecommunications pedigree, we create market-leading security solutions for the contact centre. It’s why more than a thousand organisations trust us to help them fight fraud.


Our cloud-based AI-powered platform uses direct access to the carrier network, shared data on known fraudsters from our consortium and machine learning technology to protect your contact centre and your customers. 


Find out more on how Smartnumbers helps organisations to prevent fraud and authenticate customers in one go here. 

 

We are looking forward to hearing from you!
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