Senior Project Manager

Who Are Massive Rocket?

Massive Rocket is a rapidly scaling Braze and Snowflake agency on a mission to transform how digital marketing, product, and engineering teams connect. In just five years, we’ve grown at speed and are now gearing up for our next big milestone: hitting $100M in revenue. We build human experiences at scale, powered by cutting‑edge web, mobile, cloud, data, and AI technologies. If you’re excited by innovation, love solving complex challenges, and want to help shape the future of digital experiences, you’ll feel right at home here.

Every role at Massive Rocket is entrepreneurial. The people who thrive here don’t just focus on their own remit — they understand the goals of the teams around them and actively contribute to the success of their colleagues, customers, and partners. We’re building a culture of ownership, collaboration, and growth, and we’re looking for people who want to make a real impact.

• Who Are We Looking to Add to Our Team?
• As a Senior Project Manager at Massive Rocket, you'll lead the delivery of complex, high-value client engagements across multiple workstreams. You'll be the senior delivery lead for your accounts, responsible for client satisfaction, commercial performance, delivery quality, and team development.

You'll translate client objectives into structured, measurable programmes, establish strong governance, and bring clarity across teams, dependencies, risks, timelines, and budgets. Working with senior client stakeholders and globally distributed delivery teams, you'll ensure programmes are delivered on time, on budget, and to the highest standard.

This role combines senior client leadership, programme delivery, commercial ownership, and people development , making it ideal for an experienced Project Manager ready to take greater ownership of complex client engagements.

What will you do?

Own delivery across complex, multi-workstream client engagements, managing timelines, dependencies, risks, quality, and overall programme health

Act as the primary delivery contact for clients, building trusted relationships with senior stakeholders and ensuring alignment to business objectives

Establish governance frameworks, delivery cadences, RAID management, and reporting to keep programmes predictable and on track

Own account P&L, including budget forecasting, margin management, revenue recognition, and change requests

Lead and coordinate globally distributed delivery teams, setting clear expectations and driving accountability across workstreams

Coach and develop Project Managers and junior team members, helping raise delivery standards across the wider team

Lead delivery input into RFPs, proposals, and pitches while identifying opportunities to support account growth

Use AI tools, dashboards, and project data to improve reporting, delivery efficiency, and decision-making

Continuously improve Massive Rocket's delivery processes, tools, governance, and ways of working

What Makes You a Great Fit

5–8 years of Project or Programme Management experience, with clear progression and experience leading complex, high-value client engagements

Proven ability to manage multiple workstreams, cross-team dependencies, risks, and senior stakeholders within complex delivery environments

Strong commercial and P&L experience, including budget forecasting, margin management, revenue recognition, and scope/change management

Excellent client leadership skills, with confidence managing senior stakeholders and navigating complex organisational dynamics

Experience leading and developing delivery teams, including globally distributed teams across multiple time zones

Strong governance, risk management, planning, reporting, and quality management skills

Experience contributing to RFPs, proposals, pitches, and account growth initiatives

Comfortable using AI tools and data to automate reporting, improve visibility, and drive better delivery decisions

Experience working in a fast-paced agency, consultancy, Martech, or technology environment

English proficiency at C1 level

Desirable

Experience managing significant client accounts within a digital agency or Martech consultancy

Deep understanding of CRM, Braze, Snowflake, and data-driven delivery

Braze certification or strong platform knowledge

MSP Practitioner, PgMP, or equivalent programme-level certification

Why You’ll Love Working Here

Rocket‑Fuelled Growth – Big challenges, fast learning, and the chance to level up quicker than anywhere else

A Culture That Actually Gives a Damn – Supportive, positive, and built around people who want to see you win

A Global Crew – Collaborate with brilliant teammates across Europe, the US, and beyond

Remote‑First for Life – Work from wherever you feel your best

Real Career Momentum – Clear progression, real ownership, and space to grow into your next chapter

Moments That Matter – Meetups, events, and team experiences that make the journey unforgettable

A Few Things to Know Before We Get Started

Bring Your Own Device – We operate a BYOD policy, so you’ll use your own kit for work

Right to Work – You’ll need a valid work visa; we’re not able to offer sponsorship at the moment

ID Checks – We may ask for proof of identity (passport, ID card, or a recent utility bill)

References – We may request two references, so have names, relationships, and contact details ready

For Contractors – Proof of incorporation and up‑to‑date insurance is required

A Quick Note on Applications

We receive a high volume of applications, and while we’d love to reply to everyone personally, it’s not always possible. If you haven’t heard from us within two weeks, it sadly means you haven’t been successful this time. But don’t let that stop you—we’re growing fast, and new opportunities open up all the time.