Senior Proposal Manager

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Requirements

  • You have 5+ years of experience managing RFPs or proposals in a high-growth SaaS environment, preferably supporting enterprise or mid-market sales teams
  • You’re an exceptional project manager—organized, detail-oriented, and comfortable juggling multiple complex deliverables under tight timelines
  • You have excellent writing, editing, and communication skills, with a strong instinct for tailoring content to different audiences
  • You’re collaborative and low-ego—you know how to bring people together to get things done and aren’t afraid to chase down answers or ask for help
  • You’re systems-minded and always looking for ways to improve the process—whether that’s introducing a new tool, optimizing workflows, or creating better documentation
  • You understand the nuances of enterprise buying processes and what it takes to compete in a crowded market
  • You’re excited by the idea of joining a company where your work will be visible, valued, and essential to how we win

What the job involves

  • At Klaviyo, our mission is to empower creators to own their growth
  • As we scale, the RFP process is becoming an increasingly strategic part of how we compete and win with some of our most sophisticated customers
  • We're looking for a high-performing Proposal Manager to lead the charge in building and scaling our RFP response function
  • This is a high-leverage, high-impact individual contributor role with significant visibility and influence across the go-to-market organization
  • You’ll be the first dedicated hire focused on RFP excellence—meaning you’ll play a critical role in shaping the systems, processes, and strategy behind how we respond to customer questionnaires
  • You won’t be building from scratch – we already have RFP software and practices in place – but you will have the opportunity to define best practices, elevate our approach, evolve our systems, and generally raise the bar for how Klaviyo shows up in competitive sales cycles
  • You’ll find strong support and eager partners across Sales, Presales, Marketing and other parts of the business
  • This is a chance for someone with the right experience to shape the future of the proposal management function at a world-class SaaS company – while also directly impacting revenue, win rate, and brand perception
  • This role is in the Presales organization, which also includes Presales Solution Architects and our Demo Experience team
  • If you're someone who thrives on crafting compelling narratives, managing complex cross-functional projects, and influencing strategic sales outcomes through precision and clarity—this role could be for you
  • What you’ll get in return is the opportunity to be part of an extremely high-performing, strategically-important team that works at the exciting intersection of engineering, sales, and customer engagement
  • Serve as a trusted partner and internal champion for all things RFP—becoming the go-to expert for proposal strategy and execution
  • Own the end-to-end RFP, RFI, and security questionnaire response strategy and process from intake to submission, including:
  • Defining what it means to qualify an RFP/RFI, balancing factors like effort, quality and ROI
  • Importing qualified questionnaires into our RFP software
  • Drafting and refining initial answers to technical, functional, and business questions in RFPs and RFIs
  • Sourcing and validating inputs from subject-matter experts across the company (e.g. Sales, Product, Legal, Security, Product Marketing)
  • Packaging and delivering proposals in a compelling, differentiated way that helps us win
  • Maintain and improve a scalable, up-to-date knowledge base of commonly asked questions and approved answers using our RFP software, including:
  • Ensuring all content is accurate, consistent and on-brand
  • Reviewing new content and adding to the knowledge base as appropriate
  • Partner with Sales and Go-to-Market operational leadership to ensure our process is measurable and built for maximum effectiveness and efficiency, including:
  • Ensuring an effective qualification process and healthy RFP response rate
  • Tracking and improving RFP win rates and turnaround times

#J-18808-Ljbffr”, “datePosted”: “2026-05-20”, “hiringOrganization”: { “@type”: “Organization”, “name”: “Deepstreamtech”, “sameAs”: “https://uk.whatjobs.com/pub_api__cpl__436817605__4861?utm_campaign=publisher&utm_medium=api&utm_source=4861&geoID=299” }, “jobLocation”: { “@type”: “Place”, “address”: { “@type”: “PostalAddress”, “addressLocality”: “London” } } }
Company: Deepstreamtech
Apply for the Senior Proposal Manager
Location: London
Job Description:

Requirements

  • You have 5+ years of experience managing RFPs or proposals in a high-growth SaaS environment, preferably supporting enterprise or mid-market sales teams
  • You’re an exceptional project manager—organized, detail-oriented, and comfortable juggling multiple complex deliverables under tight timelines
  • You have excellent writing, editing, and communication skills, with a strong instinct for tailoring content to different audiences
  • You’re collaborative and low-ego—you know how to bring people together to get things done and aren’t afraid to chase down answers or ask for help
  • You’re systems-minded and always looking for ways to improve the process—whether that’s introducing a new tool, optimizing workflows, or creating better documentation
  • You understand the nuances of enterprise buying processes and what it takes to compete in a crowded market
  • You’re excited by the idea of joining a company where your work will be visible, valued, and essential to how we win

What the job involves

  • At Klaviyo, our mission is to empower creators to own their growth
  • As we scale, the RFP process is becoming an increasingly strategic part of how we compete and win with some of our most sophisticated customers
  • We’re looking for a high-performing Proposal Manager to lead the charge in building and scaling our RFP response function
  • This is a high-leverage, high-impact individual contributor role with significant visibility and influence across the go-to-market organization
  • You’ll be the first dedicated hire focused on RFP excellence—meaning you’ll play a critical role in shaping the systems, processes, and strategy behind how we respond to customer questionnaires
  • You won’t be building from scratch – we already have RFP software and practices in place – but you will have the opportunity to define best practices, elevate our approach, evolve our systems, and generally raise the bar for how Klaviyo shows up in competitive sales cycles
  • You’ll find strong support and eager partners across Sales, Presales, Marketing and other parts of the business
  • This is a chance for someone with the right experience to shape the future of the proposal management function at a world-class SaaS company – while also directly impacting revenue, win rate, and brand perception
  • This role is in the Presales organization, which also includes Presales Solution Architects and our Demo Experience team
  • If you’re someone who thrives on crafting compelling narratives, managing complex cross-functional projects, and influencing strategic sales outcomes through precision and clarity—this role could be for you
  • What you’ll get in return is the opportunity to be part of an extremely high-performing, strategically-important team that works at the exciting intersection of engineering, sales, and customer engagement
  • Serve as a trusted partner and internal champion for all things RFP—becoming the go-to expert for proposal strategy and execution
  • Own the end-to-end RFP, RFI, and security questionnaire response strategy and process from intake to submission, including:
  • Defining what it means to qualify an RFP/RFI, balancing factors like effort, quality and ROI
  • Importing qualified questionnaires into our RFP software
  • Drafting and refining initial answers to technical, functional, and business questions in RFPs and RFIs
  • Sourcing and validating inputs from subject-matter experts across the company (e.g. Sales, Product, Legal, Security, Product Marketing)
  • Packaging and delivering proposals in a compelling, differentiated way that helps us win
  • Maintain and improve a scalable, up-to-date knowledge base of commonly asked questions and approved answers using our RFP software, including:
  • Ensuring all content is accurate, consistent and on-brand
  • Reviewing new content and adding to the knowledge base as appropriate
  • Partner with Sales and Go-to-Market operational leadership to ensure our process is measurable and built for maximum effectiveness and efficiency, including:
  • Ensuring an effective qualification process and healthy RFP response rate
  • Tracking and improving RFP win rates and turnaround times

#J-18808-Ljbffr…

Posted: May 20th, 2026