Head of SI Sales

JR United Kingdom; City Of London; On-site; GBP 80,000 - 120,000; Full time

Job summary

A leading company is seeking a Head of SI Sales to spearhead sales execution with Tier-1 System Integrators in London. This role offers the opportunity to grow a partner sales channel in sectors like Public Services and Financial Services. Join a dynamic firm focused on transformational growth in a supportive working environment.

Benefits

25 days annual leave plus bank holidays

Paid leave for birthday

4% matched employer pension contribution

Life assurance

Employee Assistance Programme

Private medical insurance

Cycle to work scheme

Access to independent financial advisor

Social value days for community service

Qualifications

• Proven experience selling into or through System Integrators.
• Strong understanding of SI operations and governance.
• Experience with professional services sales.

Responsibilities

• Own and grow the SI partner sales channel.
• Develop and execute strategic account plans.
• Maintain relationships with key commercial leads.

Skills

Sales into System Integrators

Account Planning

Commercial Negotiation

Relationship Building

CRM Proficiency

Tools

HubSpot

Job description

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Head of SI Sales, london (city of london)

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Client:

TXP

Location:

london (city of london), United Kingdom

Job Category:

Other

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EU work permit required:

Yes

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Job Views:

4

Posted:

18.06.2025

Expiry Date:

02.08.2025

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Job Description:

We are TXP. We help businesses and organisations move forward, at pace and at scale. We believe in the transformative power of combining technology and people. By providing consulting expertise, development services and resourcing, we work closely with organisations to solve their most complex business problems.

Our work transforms organisations – and we take that responsibility seriously. We focus on success, pursue excellence and take ownership of everything we do. But achieving that level of performance requires an inclusive and supportive working environment. We believe in the power of technology and people, and we help everyone here to succeed. At TXP, you can multiply your potential.

We work on some of the largest global digital change programmes through leading global System Integrators (SIs) including Deloitte, Fujitsu, Kyndryl, CGI, Capgemini and Credera, and we are now seeking a Head of SI Sales to help accelerate growth across this key strategic channel.

This role will lead our sales execution through Tier-1 SI partners — particularly in the Public Sector, Insurance and Financial Services verticals. The ideal candidate will understand how large SIs operate, be experienced in subcontracting and strategic account planning, and have a track record of driving revenue through partner-led engagements, particularly for consulting services, staff augmentation, fixed-price delivery and managed services. This hybrid role involves travelling twice a week to meet with clients and to our central London offices.

Key Responsibilities:

• Own and grow the SI partner sales channel, focusing on subcontracting-led revenue generation through Tier-1 SIs.
• Develop and execute strategic account plans for each major SI partner, aligning with delivery and resourcing leaders to drive successful outcomes.
• Build and manage a strong pipeline of partner-led opportunities across public and financial services markets.
• Maintain relationships with key commercial, project and account leads inside SIs and act as a go-to interface for joint opportunities.
• Work closely with internal Delivery and Resourcing teams to structure and deliver high-value engagements.
• Lead bid responses and proposal development where required for SI-driven opportunities.
• Track activity and performance in HubSpot, ensuring clear forecasting and deal progression visibility.
• Identify opportunities to expand footprint within each SI, ultimately turning the channel into a major accounts function.
• Represent the company at industry and partner events, helping raise our profile and presence with SIs.

Key Skills and Experience:

• Proven experience selling into or through System Integrators.
• Strong understanding of how SIs operate, including their subcontracting models, commercial processes, and governance structures.
• Experience in strategic account planning, partner account mapping, and influencing internal sales cycles within SIs.
• Experience selling professional services, particularly managed services, staff augmentation or consulting projects.
• Proven track record of driving revenue and gross profit through partner-led channels.
• Experience working at or with SIs such as Deloitte, Fujitsu, CGI, or Kyndryl is highly desirable.
• Excellent communication, commercial negotiation, and relationship-building skills.
• Proficient in CRM usage, particularly HubSpot.
• Uncapped OTE- high earning potential for top performers.
• 25 days annual leave (plus bank holidays)
• An additional day of paid leave for your birthday (or Christmas eve)
• 4% Matched employer contributed pension (salary sacrifice)
• Life assurance (3x)
• Access to an Employee Assistance Programme
• Private medical insurance through our partner Aviva.
• Cycle to work scheme
• Access to an independent financial advisor
• 2 x social value days per year to give back to local communities.

Grow with us:

Work on exciting new projects

If you want to avoid getting stuck with the mundane, you’re in the right place. We work in many sectors with fantastic clients, so you’ll always be working on something exciting and challenging.

We recognise that you might have a career path planned out and you might need some support to help you move forward. We’re here to support you and make the most out of your time with us, through challenging work, opportunities to grow and learning and development opportunities.

Be part of the TXP growth journey

We are a high growth, fast paced environment. We currently have 200+ employees and work with clients across the UK. Joining TXP means you’ll be part of that.