66 Implementation Manager jobs in the United Kingdom

Our client is an award-winning UK-based company known for delivering high-quality engineering products and tailored onsite solutions to major players in the aerospace and defence industries. With a strong focus on innovation, service excellence, and long-term client partnerships, they are growing their footprintand you could be at the heart of their next major project.

Theyre looking for a proactiv.

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Implementation Manager (Enterprise):

About the job:

We’re looking for an Implementation Manager who thrives at the intersection of customer success, product, and engineering. We are B2B Fintech in Payments, helping enterprises improve their financial operations:

Do you…

• enjoy dissecting complex enterprise systems to figure out how they actually work?
• get a kick out of making clunky ERP setups play nicely with modern platforms?
• take pride in delivering onboarding experiences that just… work?
• love bringing clarity to chaos in cross-functional environments?

Are you…

• a strong communicator who can speak both “engineering” and “CFO”?
• able to understand the big picture while diving into the technical details?
• comfortable leading onboarding projects from kickoff to delivery?
• someone who thrives in client-facing, solution-oriented roles?

Here’s what makes our work different

We’re not just building B2B software – we’re transforming how enterprise finance teams manage cash flow and collections. Our enterprise clients rely on us to understand their technical environments, especially ERPs like NetSuite, SAP, and Microsoft Dynamics, and to help them integrate Kolleno seamlessly.

You will be the technical bridge between our clients and product, ensuring each enterprise onboarding is tailored to how the customer actually works – not how they say they work. 

Your Role as Project LeadY

ou’ll be the owner and driver of multiple large-scale onboarding projects. You’ll operate as a hands-on project manager, responsible for coordinating cross-functional teams, unblocking issues, keeping everyone aligned, documenting progress and most importantly, getting customers live as quickly and smoothly as possible. You’ll be the central point of contact internally and externally, balancing technical detail with strategic oversight, and making sure every onboarding hits the mark.Y

ou’ll join a team that values.A

• Customer first approach. D
• eep understanding of customer systems and workflowsC
• lear, honest communication (internally and externally)C
• onsistent, high-quality onboarding deliveryL
• ong-term thinking, not duct-tape fixesC
• ustomer empathy with strong technical depthY

our Day-to-DayW

• ork closely with enterprise customers to understand their ERP setups (NetSuite, SAP, Microsoft Dynamics), billing and collections processesG
• ather and map technical requirements, including custom fields, data flows, and integration logicO
• wn the technical implementation of Kolleno during onboardingC
• ollaborate across Sales,Product, Engineering, and Customer Success to design tailored solutionsD
• evelop and deliver an internal/external onboarding progress tool to track outstanding tasks and milestonesA
• ct as the go-to expert for how Kolleno integrates with ERPs across the enterprise customer baseT
• ranslate customer needs into actionable tasks and ensure smooth delivery of onboardingA
• ssist with updating and maintaining detailed project plans and coordination of partner meetings, setting agendas, recording and distributing minutesD
• emonstrate strong project management capabilities by driving coordination of underlying implementation activities, including core application configurations, data ingestion setup, workflow configuration, and ongoing support.P
• articipate in client-facing meetings and communications across various organizational levels, including executives, project leads, and operational teamsE

xperience Required& nbsp;6

• + years in a Solutions Engineer, Implementation Specialist, Technical Consultant, or Salesforce Technical ConsultantS
• trong understanding of APIs, data mapping, and integration patternsC
• omfortable in client-facing situations, including with senior stakeholdersA
• bility to interpret business requirements and translate them into technical specsS
• trong organizational skills and a bias toward actionB
• onus: Hands-on experience working with ERPs – especially NetSuite and SAPB
• onus: experience building internal tools or project tracking systemsK

olleno BenefitsW

ork remotely all of August – escape the city, or just your commuteOffice shuts down for 2 weeks in December – actual downtimeStock options after 12 monthsOffice-based Monday to Thursday, Fridays are flexible – your callThursday = Treat Day: Ben’s Cookies + lunch on usPerformance bonuses20 days holidays

Implementation Manager (Enterprise):

About the job:

We’re looking for an Implementation Manager who thrives at the intersection of customer success, product, and engineering. We are B2B Fintech in Payments, helping enterprises improve their financial operations:

Do you…

• enjoy dissecting complex enterprise systems to figure out how they actually work?
• get a kick out of making clunky ERP setups play nicely with modern platforms?
• take pride in delivering onboarding experiences that just… work?
• love bringing clarity to chaos in cross-functional environments?

Are you…

• a strong communicator who can speak both “engineering” and “CFO”?
• able to understand the big picture while diving into the technical details?
• comfortable leading onboarding projects from kickoff to delivery?
• someone who thrives in client-facing, solution-oriented roles?

Here’s what makes our work different

We’re not just building B2B software – we’re transforming how enterprise finance teams manage cash flow and collections. Our enterprise clients rely on us to understand their technical environments, especially ERPs like NetSuite, SAP, and Microsoft Dynamics, and to help them integrate Kolleno seamlessly.

You will be the technical bridge between our clients and product, ensuring each enterprise onboarding is tailored to how the customer actually works – not how they say they work. 

Your Role as Project LeadY

ou’ll be the owner and driver of multiple large-scale onboarding projects. You’ll operate as a hands-on project manager, responsible for coordinating cross-functional teams, unblocking issues, keeping everyone aligned, documenting progress and most importantly, getting customers live as quickly and smoothly as possible. You’ll be the central point of contact internally and externally, balancing technical detail with strategic oversight, and making sure every onboarding hits the mark.Y

ou’ll join a team that values.A

• Customer first approach. D
• eep understanding of customer systems and workflowsC
• lear, honest communication (internally and externally)C
• onsistent, high-quality onboarding deliveryL
• ong-term thinking, not duct-tape fixesC
• ustomer empathy with strong technical depthY

our Day-to-DayW

• ork closely with enterprise customers to understand their ERP setups (NetSuite, SAP, Microsoft Dynamics), billing and collections processesG
• ather and map technical requirements, including custom fields, data flows, and integration logicO
• wn the technical implementation of Kolleno during onboardingC
• ollaborate across Sales,Product, Engineering, and Customer Success to design tailored solutionsD
• evelop and deliver an internal/external onboarding progress tool to track outstanding tasks and milestonesA
• ct as the go-to expert for how Kolleno integrates with ERPs across the enterprise customer baseT
• ranslate customer needs into actionable tasks and ensure smooth delivery of onboardingA
• ssist with updating and maintaining detailed project plans and coordination of partner meetings, setting agendas, recording and distributing minutesD
• emonstrate strong project management capabilities by driving coordination of underlying implementation activities, including core application configurations, data ingestion setup, workflow configuration, and ongoing support.P
• articipate in client-facing meetings and communications across various organizational levels, including executives, project leads, and operational teamsE

xperience Required& nbsp;6

• + years in a Solutions Engineer, Implementation Specialist, Technical Consultant, or Salesforce Technical ConsultantS
• trong understanding of APIs, data mapping, and integration patternsC
• omfortable in client-facing situations, including with senior stakeholdersA
• bility to interpret business requirements and translate them into technical specsS
• trong organizational skills and a bias toward actionB
• onus: Hands-on experience working with ERPs – especially NetSuite and SAPB
• onus: experience building internal tools or project tracking systemsK

olleno BenefitsW

ork remotely all of August – escape the city, or just your commuteOffice shuts down for 2 weeks in December – actual downtimeStock options after 12 monthsOffice-based Monday to Thursday, Fridays are flexible – your callThursday = Treat Day: Ben’s Cookies + lunch on usPerformance bonuses20 days holidays

Stakeholder Relationship & Implementation Manager / Brighton (Hybrid) / £40,000 + Bonus Options

Be the Strategic Glue That Holds a Global Ecosystem Together.

Cosaris is looking for a brilliantly organised, empathetic and relationship-savvy Stakeholder Relationship & Implementation Manager to join our passionate, growing team in Brighton (or hybrid with regular visits). This is your chance to work at the heart of a flagship international retail alliance, shaping how top-tier food retailers across Europe and Asia collaborate, engage and create lasting impact together.

If you thrive on connecting people, aligning priorities, resolving blockers and driving meaningful strategic delivery — this is your role.

What’s on Offer?

• A salary of £40,000 per annum and flexible working
li>Hybrid or Brighton-based – with regular in-person collaboration < i>International travel – engage with senior leaders across Europe < i>Unlimited holiday – take time when you need it, when impact is high < i>Modern Brighton office – vibrant coworking community, great coffee < i>Bonus scheme – share in the success you help create < i>Career growth – high visibility, real responsibility, and cross-functional learning < i>Meaningful work – shape a flagship programme that impacts major global retailers

Key Responsibilities of the Stakeholder Relationship & Implementation Manager:

You’ll lead the coordination and execution of high-impact engagement initiatives for one of our most influential clients. Partnering closely with our Managing Director and leadership team, you’ll:

• B ild trust with senior stakeholders across a dynamic, international alliance of food retailers
• Orchestrate a seamless rollout of initiatives like our digital collaboration Hub and ambassador programme
• Align internal teams with member priorities to ensure clarity, progress and momentum
• Turn feedback into action, stories into strategy, and obstacles into opportunities
• Be the calm in the complexity — keeping projects on track, relationships strong, and results tangible

What You’ll Bring:

• Crystal-clear communication skills — empathetic, articulate and persuasive
< i>Confidence coordinating multiple workstreams and collaborating across disciplines
• A bias toward action, a love of structured problem-solving, and a talent for diplomacy
• Experience in food retail, FMCG, membership organisations or B2B services is a big plus

Why Cosaris?

Cosaris is a strategic engagement consultancy working with membership and multi-stakeholder ecosystems to build lasting impact through collaboration, innovation and insight.

We’re small, nimble and ambitious — with a big vision. You’ll be joining a warm, multidisciplinary team that blends strategy, design, communication and tech to deliver truly transformational work.

Ready to Join Us?

If you’re a proactive connector who thrives in complexity, loves delivering value for people, and wants to make a strategic difference — we’d love to hear from you.

Apply now with your CV and a cover letter showing why you’re the perfect fit.

Stakeholder Relationship & Implementation Manager / Brighton (Hybrid) / £40,000 + Bonus Options

Be the Strategic Glue That Holds a Global Ecosystem Together.

Cosaris is looking for a brilliantly organised, empathetic and relationship-savvy Stakeholder Relationship & Implementation Manager to join our passionate, growing team in Brighton (or hybrid with regular visits). This is your chance to work at the heart of a flagship international retail alliance, shaping how top-tier food retailers across Europe and Asia collaborate, engage and create lasting impact together.

If you thrive on connecting people, aligning priorities, resolving blockers and driving meaningful strategic delivery — this is your role.

What’s on Offer?

• A salary of £40,000 per annum and flexible working
li>Hybrid or Brighton-based – with regular in-person collaboration < i>International travel – engage with senior leaders across Europe < i>Unlimited holiday – take time when you need it, when impact is high < i>Modern Brighton office – vibrant coworking community, great coffee < i>Bonus scheme – share in the success you help create < i>Career growth – high visibility, real responsibility, and cross-functional learning < i>Meaningful work – shape a flagship programme that impacts major global retailers

Key Responsibilities of the Stakeholder Relationship & Implementation Manager:

You’ll lead the coordination and execution of high-impact engagement initiatives for one of our most influential clients. Partnering closely with our Managing Director and leadership team, you’ll:

• B ild trust with senior stakeholders across a dynamic, international alliance of food retailers
• Orchestrate a seamless rollout of initiatives like our digital collaboration Hub and ambassador programme
• Align internal teams with member priorities to ensure clarity, progress and momentum
• Turn feedback into action, stories into strategy, and obstacles into opportunities
• Be the calm in the complexity — keeping projects on track, relationships strong, and results tangible

What You’ll Bring:

• Crystal-clear communication skills — empathetic, articulate and persuasive
< i>Confidence coordinating multiple workstreams and collaborating across disciplines
• A bias toward action, a love of structured problem-solving, and a talent for diplomacy
• Experience in food retail, FMCG, membership organisations or B2B services is a big plus

Why Cosaris?

Cosaris is a strategic engagement consultancy working with membership and multi-stakeholder ecosystems to build lasting impact through collaboration, innovation and insight.

We’re small, nimble and ambitious — with a big vision. You’ll be joining a warm, multidisciplinary team that blends strategy, design, communication and tech to deliver truly transformational work.

Ready to Join Us?

If you’re a proactive connector who thrives in complexity, loves delivering value for people, and wants to make a strategic difference — we’d love to hear from you.

Apply now with your CV and a cover letter showing why you’re the perfect fit.

Implementation Manager / Implementation Planning / Cutover / Release / MS Project / IT Systems Implementation / Implementation Delivery Manager / Project / Programme – Hybrid role, mainly remote with travel to Warwickshire. £500 – 600 per day Inside IR35.

One of our leading clients is looking to recruit an Implementation Manager.

Location – Remote with travel to Warwickshire when required (likely a couple of times per month)

Day Rate - £500 – 600 per day Inside IR35

This is working on a large implementation so you will need experience working on a large and complex IT System implementation with multiple workstreams.

Experience:

• Must have experience in a Systems Implementation Manager role or similar
• Very strong project planning / programme planning with MS Project / MSP and have experience of running task by task / hour by hour / minute by minute
• Experience of implementing parallel plans / series plans / dependencies etc
• IT Systems implementation / integration / Cutover / Release

Desirable:

Experience in a regulated environment such as Financial Services (Insurance, Life & Pensions), Utilities (Electricity, Oil, Gas) or Telecoms etc

Implementation Manager / Implementation Planning / Cutover / Release / MS Project / IT Systems Implementation / Implementation Delivery Manager / Project / Programme – Hybrid role, mainly remote with travel to Warwickshire. £500 – 600 per day Inside IR35.

One of our leading clients is looking to recruit an Implementation Manager.

Location – Remote with travel to Warwickshire when required (likely a couple of times per month)

Day Rate - £500 – 600 per day Inside IR35

This is working on a large implementation so you will need experience working on a large and complex IT System implementation with multiple workstreams.

Experience:

• Must have experience in a Systems Implementation Manager role or similar
• Very strong project planning / programme planning with MS Project / MSP and have experience of running task by task / hour by hour / minute by minute
• Experience of implementing parallel plans / series plans / dependencies etc
• IT Systems implementation / integration / Cutover / Release

Desirable:

Experience in a regulated environment such as Financial Services (Insurance, Life & Pensions), Utilities (Electricity, Oil, Gas) or Telecoms etc

Implementation Manager / Implementation Planning / Cutover / Release / MS Project / IT Systems Implementation / Implementation Delivery Manager / Project / Programme – Hybrid role, mainly remote with travel to Warwickshire. £500 – 600 per day Inside IR35.

One of our leading clients is looking to recruit an Implementation Manager.

Location – Remote with travel to Warwickshire when required (likely a couple of times per month)

Day Rate - £500 – 600 per day Inside IR35

This is working on a large implementation so you will need experience working on a large and complex IT System implementation with multiple workstreams.

Experience:

• Must have experience in a Systems Implementation Manager role or similar
• Very strong project planning / programme planning with MS Project / MSP and have experience of running task by task / hour by hour / minute by minute
• Experience of implementing parallel plans / series plans / dependencies etc
• IT Systems implementation / integration / Cutover / Release

Desirable:

Experience in a regulated environment such as Financial Services (Insurance, Life & Pensions), Utilities (Electricity, Oil, Gas) or Telecoms etc

Implementation Manager / Implementation Planning / Cutover / Release / MS Project / IT Systems Implementation / Implementation Delivery Manager / Project / Programme – Hybrid role, mainly remote with travel to Warwickshire. £500 – 600 per day Inside IR35.

One of our leading clients is looking to recruit an Implementation Manager.

Location – Remote with travel to Warwickshire when required (likely a couple of times per month)

Day Rate - £500 – 600 per day Inside IR35

This is working on a large implementation so you will need experience working on a large and complex IT System implementation with multiple workstreams.

Experience:

• Must have experience in a Systems Implementation Manager role or similar
• Very strong project planning / programme planning with MS Project / MSP and have experience of running task by task / hour by hour / minute by minute
• Experience of implementing parallel plans / series plans / dependencies etc
• IT Systems implementation / integration / Cutover / Release

Desirable:

Experience in a regulated environment such as Financial Services (Insurance, Life & Pensions), Utilities (Electricity, Oil, Gas) or Telecoms etc