Implementation Lead

JobsCloseBy Editorial Insights

Implementation Lead at Topsort is a full-time, onsite role in London responsible for owning and scaling the global onboarding and activation function as the company grows. You will drive enterprise go lives from discovery to launch, build standardized onboarding playbooks, translate commercial commitments into integrated plans with Sales Product Engineering and Customer teams, reduce engineering escalations, support expansion across formats and geographies, and mentor junior PMs toward a growing team. Ideal candidates have 5+ years in SaaS Ad Tech or Retail Media, 20+ enterprise implementations, a systems mindset with strong technical fluency, and comfort operating in ambiguity. To apply, quantify outcomes on your resume, demonstrate end-to-end delivery and cross-functional impact, and tie your experience to Topsort’s privacy-first mission and rapid execution ethos.

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We're quickly growing and super excited for you to join us!

About Topsort

At Topsort, we believe in the mission of democratizing the secret technologies of the walled gardens and creating a privacy-first cookie-free world of clean advertising with modern tech, friendly products, and AI. We believe in making advertising intuitive, intelligent, and genuinely cool, without any of the creepy ads or cookie-obsession (well, maybe just the chocolate ones). In a rapidly changing industry, we're on a mission to democratize monetization access for all and ensure that advertising doesn't leave any brand or seller feeling confused or overwhelmed.

Today, Topsort has 5 major hubs worldwide, and employees in 13+ countries, including Menlo Park, Boston, Santiago Chile, Sao Paulo Brazil, Barcelona Spain, and Sydney Australia. We are a truly global company that was born in the pandemic that’s had rapid growth since out of a genius product, a customer-first mentality, and a hardworking team of talented individuals. Since our founding in 2021, we’ve gained customers in retail, marketplaces, and delivery apps in 40+ countries and quickly approaching the #1 position in the industry.

Do you enjoy a fast-paced environment? Do you like seeing your work create real-time impact, being part of a rocket ship from the very beginning? Let’s do the unimaginable - let’s make ads clean and cool again, with AI and modern technology.

What it’s like to work at Topsort

Our team is all about straightforward communication, embracing feedback without taking it personally, and fostering a super collaborative environment. It’s a sports team that’s hyper focused on winning, collaborative internally, and competitive externally - never the other way around. We thrive on working in the open, lifting each other up, and getting things done with a sense of urgency. We're the kind of team that loves making bold choices, sharing extraordinary opinions, and maintaining a 100 mph pace. No endless meetings here – if it can be done today, we're all about getting it done today.

What is this role like?

The Implementation Lead will operate as a highly autonomous leader, owning and scaling our global onboarding and activation function. This role requires experience operating in high growth environments and building structured systems within complex enterprise implementations.  

As we scale from 10M to 100M plus, we are upgrading our post sale engine to match our sales velocity, and this role will build that engine. 

• Enterprise Go Lives: Drive major customer integrations from technical discovery through launch and activation. Define timelines, milestones, and launch criteria while pushing back on scope creep with clarity and confidence. Own predictable, high quality enterprise go lives.
• Onboarding Systemization: Build standardized onboarding frameworks, playbooks, checklists, and launch service levels. Reduce variability across regions and customers and transition execution from hero based delivery to a repeatable implementation machine.
• Cross Functional Execution: Translate commercial commitments into structured integration plans in close partnership with Sales, Product, Engineering, and Customer teams. Align stakeholders, manage trade offs, and ensure implementation capacity scales with revenue growth.
• Engineering Interface and Dependency Reduction: Act as the first line of technical triage, reducing unnecessary engineering escalations. Improve documentation, integration clarity, and structured intake processes to decrease engineering dependency.
• Expansion Rollouts: Support new formats, geographies, and product modules as scoped implementations. Ensure expansion capacity does not become a bottleneck to revenue.
• Team Building and Performance Management: Mentor and level up junior PMs, define the future hiring roadmap for Implementation, and build toward a 3 to 5 person organization. Establish clear performance indicators around time to value, launch predictability, and implementation throughput.

What (we think) you need to be successful

We’re open to candidates who don’t check every box but show strong potential.

• Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
• 5 + years of experience in Implementation, Solutions Engineering, Technical Program Management, or Post Sales leadership within SaaS, Ad Tech or Retail Media environments
• A track record of leading 20 plus enterprise implementations from technical discovery through launch, activation, and early expansion
• Experience building or significantly improving onboarding systems, playbooks, and frameworks rather than simply coordinating tasks
• Confidence operating in ambiguity and the ability to turn loosely defined objectives into structured execution plans
• Strong enterprise presence, with the ability to push back on scope creep while maintaining customer trust and long term relationships
• Solid technical fluency, including comfort discussing APIs, data flows, integration architecture, and implementation trade offs
• A systems oriented mindset, thinking beyond individual launches toward repeatable and scalable infrastructure
• Experience mentoring or leveling up junior team members and contributing to team design

You are not:

• A ticket manager
• A Jira administrator
• A passive coordinator
• Someone who waits for Engineering to solve everything

What We Value

At Topsort, we seek professionals who embody the following qualities to drive our mission forward:

• Deep dive into details: Professionals who are not content with superficial answers and dive deeply into the details to uncover root causes and optimal solutions.
• Team first: A low need for individual recognition, always prioritizing collective results over personal credit.
• You thrive with ambiguity: Exceptional ability to tackle open-ended problems in unstructured environments, turning chaos into structured innovation.
• Adaptability: Willingness to learn, mentor, lead, and follow as the situation demands, fostering growth at all levels.
• Urgency: A disproportionate sense of urgency in execution, while keeping scalability and the creation of replicable processes in mind to ensure long-term success.
• Curiosity: Genuinely curious individuals who can quickly learn difficult concepts and apply them effectively.

Do you sound like the right fit? Let's dive right in!