PreSales Engineer UK

About this Position:

Justt helps many of the worlds largest and most recognizable brands turn chargebacks from a constant headache into a managed predictable part of doing business. Our AI-driven platform powers chargeback operations at scale automating disputes end to end recovering revenue that would otherwise be lost and removing a major operational burden from finance risk and operations teams across multiple regions and verticals.

Were a global company with teams across markets and disciplines working closely with leading players in the payments ecosystem. Our culture is built on clear thinking collaboration and a strong sense of ownership. At Justt youll partner with product engineering data success and go-to-market teams to build technology that sits at the core of modern payments and has a direct measurable impact on the bottom line for some of the biggest companies in

Role Overview:

The Pre-Sale Solution Engineer is Justts technical co-pilot in the sales process: present from the first meaningful discovery call and fully accountable for all technical workstreams until the contract is signed. This is a pure pre-sale role: you do not own onboarding or post-launch support. Your focus is singular: help Sales win technically complex high-value deals.

You will work closely with Account Executives across the AMER region engaging on strategic accounts and deals above the defined threshold ($30K CARR/ARR). You bring equal measures of technical depth and commercial instinct: you know how to run a rigorous scoping session and how to read a room.

This role sits within the Commercial Operations department and reports to the Director of Solutions.

Key Responsibility:

Technical Discovery & Scoping

• Lead technical discovery on qualified prospects: understand their payment stack PSP(s) data architecture chargeback volume and existing dispute processes.
• Define and scope the integration approach: API connectivity PSP evidence retrieval data enrichment options and any custom requirements.
• Identify gaps risks and blockers early and surface them clearly to Sales and internal stakeholders.
• Act as the internal relay between Sales and Product/Engineering when non-standard requirements surface during the sales cycle.

Demo & Proof of Concept

• Deliver compelling tailored technical demonstrations and adapt to the prospects actual environment stack and use case.
• Build and run proof-of-concept (POC) sessions that prove Justts fit technically and commercially.
• Handle technical objections confidently and independently turning blockers into reasons to move forward.

Statement of Work (SOW)

• Translate scoping outputs into a precise commercially sound SOW: integration approach timelines data requirements and acceptance criteria.
• Own the SOW as a living document through the sales cycle and updating it as requirements evolve.
• Hand off a clean complete SOW to the onboarding SE team at contract signature.

Sales Partnership

• Operate as a true partner to the Account Executive not a support function. You co-own deal progression on the technical track.
• Know when to go deep and when to keep it simple. Prospects should leave every call feeling confident not confused.
• Represent Justts technical credibility across the US market: in enterprise and fintech environments where the bar is high.
• Maintain a clean Jira board for all active pre-sale engagements; flag capacity and prioritization issues early.

Requirements:

Must-Have

• 5 years in a Solutions Engineer Pre-Sales Engineer or Technical Account Executive role in B2B SaaS fintech or payments.
• Demonstrated track record selling to or supporting enterprise and mid-market clients in a technical capacity.
• Hands-on experience with REST APIs: reading documentation testing endpoints debugging payloads independently.
• Experience working directly with PSPs or payment gateways (e.g. Stripe Adyen Braintree ).
• Native or near-native English as you will lead technical conversations with senior stakeholders at enterprise prospects.
• Strong commercial instinct: you understand that your technical work is in service of winning the deal.
• Ability to simplify complex technical concepts for non-technical audiences such as merchants finance teams legal C-suite.

Strong Advantage

• Background in the chargeback dispute management or payments fraud domain you already speak the language.
• Experience in fintech or payments infrastructure companies (acquirers PSPs gateways fraud/risk platforms).
• Experience authoring Statements of Work or complex technical scoping documents.
• Exposure to data enrichment pipelines or event-driven data flows.
• Experience selling into US enterprise retail travel or marketplace verticals.

What This Role Is Not

This is a focused pre-sale-only role. To be clear about scope:

• You do not own onboarding or implementation as that transitions to the onboarding SE at contract signature.
• You do not provide post-launch technical support as that is the domain of the full-cycle SE team.
• You are not a demo operator or slide deck builder. you are a technical partner who co-owns deal progression.
• You are not pulled into every discovery call. you engage on qualified deals above the defined threshold.

Cross-Functional Interfaces

• Account Executives (AEs): primary partner; you co-own the technical track of every deal you join.
• Director of Solutions: your manager; owns your capacity prioritization and development.
• Onboarding SE team : your handoff recipients; a clean SOW and complete discovery is your primary output to them.
• Product & Engineering: relay for non-standard requirements and feasibility questions that arise during scoping.