Lead Software Engineer (full Stack)

London, ENG, GB, United Kingdom

Job Description

Our Mission: Fixing Trust in Commerce


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For a decade, we've been on a mission to close the Trust Gap--commerce's most expensive problem. In a world where distance and digital interfaces separate buyers and sellers, we're building the definitive trust infrastructure that enables global trade to flourish.


We recognise that trust is not binary but a spectrum, and our work continually expands the boundaries of commerce itself. Each improvement we make enables transactions that previously wouldn't have happened, revealing new frontiers where trust can be further enhanced.

Our Impact Today


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We've grown from an idea into the dominant force for trust in e-commerce:

Shopify's #1 Review Solution

: We've earned over 29k five-star reviews from merchants who rely on us daily

Global Scale

: More than 550k shops across 140+ countries use our platform

Massive Reach

: We process over 70 million orders monthly, generating 2 million+ verified buyer reviews

Organic Growth

: We've achieved 40% year-over-year growth purely through word of mouth--no paid marketing or sales teams needed!

Build the Future of Trust in Commerce


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Join us to lead, shape, and elevate the craft of engineering at Judge.me.


As a Lead Software Engineer, you'll join the Five Factors Squad and work closely with our Head of Engineering to drive product innovation and execution. You'll work across the full stack and development lifecycle to solve real-world problems for 550k+ merchants globally--building high-impact features that help them earn trust, increase conversions, and grow sustainably.

This is a role for builders who lead by example, move fast with intent, and constantly raise the bar for what's possible

. You won't just maintain what exists--you'll design and deliver what's next.

What You'll Do


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Lead Core Product Initiatives


Drive the design and delivery of new Use Case Solutions within Judge.me's core platform, combining hands-on development with technical leadership.

Mentor & Accelerate


Guide engineers through mentorship and pair programming, and help the team ship faster by unblocking complexity and clarifying direction.

Champion AI & Automation


Lead the integration of AI/ML tools into development processes and product capabilities, driving innovation across the board.

Promote Engineering Excellence


Uphold a strong culture of code quality, testing, and peer reviews. Lead by example in pushing for clean, performant, and scalable code.

Deliver at Pace


Be hands-on, pragmatic, and business-aware--driving rapid delivery of high-impact features without sacrificing quality.

Collaborate Cross-functionally


Work with Product and Design to shape high-impact features aligned with customer and business needs.

What You'll Bring


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You're a high-impact engineer who thrives at the intersection of technical depth, execution speed, and product impact. You care deeply about quality, but don't get stuck in perfectionism. You lead with craft, clarity, and conviction--bringing others along by showing what's possible.

You have:



Deep hands-on experience with Ruby on Rails, modern JavaScript, cloud infrastructure (AWS), and SQL databases at scale A strong track record of delivering high-quality, reliable code at speed The ability to quickly diagnose and resolve complex issues, especially in high-stakes or time-sensitive scenarios A commitment to system resilience, including testing, monitoring, and long-term maintainability A collaborative approach to driving clean architecture and performance improvements Leadership skills to mentor and manage a small team (3-4 engineers) while fostering a culture of accountability and quality A product-aware mindset that balances technical depth with business and user outcomes Initiative in leveraging AI and automation tools to expand team capabilities and streamline workflows

Our Culture: Results-Driven Excellence


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We reward exceptional performance and are building a team that consistently pushes for better results. Success here means finding innovative ways to achieve more with our existing resources. We value time above all else--it's our scarcest resource. We budget time more strictly than money, establishing short feedback loops and breaking initiatives into their smallest units of value.


Our international team brings diverse perspectives to every challenge. We believe in lifting each other up through active knowledge sharing because our collective strength determines our success. We combine ambitious goals with pragmatic execution, creating sustainable high performance through better processes, not longer hours.

Your Package


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The Essentials



100-120k 30 days holiday + bank holidays Private health insurance (Vitality) Brand new Macbook, access to equipment as required Financial Wellbeing + Salary Sacrifice Pension via Mintago

Flexible Working



Hybrid setup: 2 office days (Tues/Thurs), 3 remote Modern Shoreditch office near Old Street Casual dress code Work from Anywhere

Team Life



Weekly team meals Quarterly events Perks at Work Account

Join Us in Building the Future of Trust in Commerce


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Work on problems that impact millions while growing with a team that values both excellence and balance. Together, we'll close the Trust Gap and unlock new possibilities for global commerce.

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Job Detail

  • Job Id
    JD3371006
  • Industry
    Not mentioned
  • Total Positions
    1
  • Job Type:
    Full Time
  • Salary:
    Not mentioned
  • Employment Status
    Permanent
  • Job Location
    London, ENG, GB, United Kingdom
  • Education
    Not mentioned