Jonathan Lassman
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Jonathan Lassman Email & Phone Number

Principal Sector Manager (Energy, Utilities, Oil and Gas, and Nuclear) at Sopra Steria
Location: Worthing, England, United Kingdom 12 work roles
1 work email found @mac.com 2 phones found area 780 and 113 LinkedIn matched
✓ Verified Jul 2026 4 data sources Profile completeness 86%

Contact Signals · 1 work email · 2 phones

Work email j****@mac.com
Direct phone (780) ***-****
LinkedIn Profile matched
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Current company
Role
Principal Sector Manager (Energy, Utilities, Oil and Gas, and Nuclear)
Location
Worthing, England, United Kingdom
Company size

Who is Jonathan Lassman? Overview

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Quick answer

Jonathan Lassman is listed as Principal Sector Manager (Energy, Utilities, Oil and Gas, and Nuclear) at Sopra Steria, a with 48802 employees, based in Worthing, England, United Kingdom. AeroLeads shows a work email signal at mac.com, phone signal with area code 780, 113, and a matched LinkedIn profile for Jonathan Lassman.

Jonathan Lassman previously worked as Mentor at Women In Defence Uk and Director of Partnerships at Shared Services Connected Ltd.

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Email format at Sopra Steria

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{first}.{last}@mac.com
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AeroLeads found 1 current-domain work email signal for Jonathan Lassman. Compare company email patterns before reaching out.

Profile bio

About Jonathan Lassman

Hello, I’m Jon! I reside in the picturesque South Downs in Worthing, where I’m a dedicated father to three teenage girls. I feel incredibly fortunate to work for SSCL’s Defence organisation, where we achieve remarkable things in the people space for our armed forces. I lead the partnership activities, a role that I find deeply fulfilling.What Gives Me Purpose:- Client Solutions: I have a genuine passion for helping clients solve their problems.- Team Development: I’m committed to developing the skills and careers of my team and mentees.- Innovation & Adaptation: I encourage my teams to innovate and adapt to new challenges.- Relationship Building: I focus on building long-term, meaningful relationships.- Enjoying the Journey: I believe the journey is often as much fun as the destination.When I’m not working, you can find me in the garden, trying not to euthanize the foliage, or cycling up and down the South Downs, both on and off-road. I also take every opportunity to embarrass my children, whether through my lack of fashion sense or simply by being their dad.Please feel free to connect and say hello. I look forward to hearing from you. Have a great day!

Listed skills include Managed Services, Account Management, Solution Selling, Strategy, and 46 others.

Current workplace

Jonathan Lassman's current company

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Sopra Steria
Sopra Steria
Principal Sector Manager (Energy, Utilities, Oil and Gas, and Nuclear)
Worthing, GB
Website
Employees
48802
AeroLeads page
12 roles · 35 years

Jonathan Lassman work experience

A career timeline built from the work history available for this profile.

Principal Sector Manager (Energy, Utilities, Oil And Gas, And Nuclear)

Worthing, Gb

Director Of Partnerships

Current

Gosport, England, United Kingdom

I lead our growth directorate focusing on business development opportunities across SSCL Defence. My team cover the full spectrum of actives from pre-sales, solution design and business development. We look for innovative ways to create efficiencies, digitise processes and optimise how things are done across the contract we manage. This is all underpinned by my relationship management team that ensure that we are continually challenging the status quo to ensure we are acting on the true spirit of partnership,

May 2022 - Present

Head Of Aquisition - Enterprise

West Sussex, England, United Kingdom

I had overall responsibility for all business development (new business) activity across Virgin Media’s (Ex O2) Enterprise sector managing a team of business development professionals and strategic sales leads. I developed and implemented a comprehensive strategy that maximised target customers, opportunities across all propositions and private sectors. I led, coached and developed the with overall responsibility for recruiting, training, and performance management using our chosen sale methodology. Leading on key senior relationships for key opportunities. Support strategic and tactical planning across Enterprise sector. Generating and achieving quarterly total contract value forecasts and accurately manage this on a monthly basis. Inspire supporting teams across commercial finance, marketing, contract management and delivery to ensure success.

Nov 2019 - Dec 2021

Sector Lead / Manufacturing & Engineering Sectors

West Sussex, United Kingdom, United Kingdom

I had overall responsibility for manufacturing and engineering sector within the Industrial Markets practice. I developed and implemented a comprehensive strategy that focused on retaining existing customers and winning new customers maximising targets, opportunities across all propositions and private sectors. I led and developed a team of eight BD directors and managers and client directors and managers with overall responsibility for recruiting, training, coaching and performance management. Leading on key senior relationships for key clients and opportunities. Generating and achieving quarterly revenue, total contract value and customer satisfaction forecasts and accurately manage this on a monthly basis. Inspire supporting teams across commercial finance, marketing, contract management and delivery to ensure success.

Sep 2015 - Nov 2019

Solutions Consultant

Ee

Worthing

I was the primary specialist and sales lead working with a team of account directors, selling and driving ICT growth opportunities into EE largest clients. I also supported the lighthouse new business team for key new ICT opportunities. Focused on spend time with CxO’s evangelising EE propositions, working with EE’s partners and management architects to create the best solution for the client’s needs, owning the sales cycle from end to end using SPIN methodology. Generating and achieving monthly revenue and total contract value forecasts

Jan 2014 - Sep 2015

Global Account Director

Ee

West Sussex

This role is a continuation of the previous role for Orange.I was responsible for developing effective, successful, sustainable and profitable long-term relationships at CxO and multi-layer within Orange/EE’s largest and most complex customers. Demonstrate knowledge across their business and their decision-making process, adding value and exceptional engagement - becoming a trusted and valued partner. Identify, create and close sales within three clients in the system integrator and construction sectors. Owning the sales cycle from end to end using SPIN methodology. Based remotely and on clients’ sites, generating and achieving accurate monthly revenue, total contract value and customer satisfaction forecasts. Drive customer satisfaction improvements, increasing NPS within the account

Jun 2010 - Dec 2013

Account Director

I was responsible for developing effective, successful, sustainable and profitable long-term relationships at CxO and multi-layer within Orange/EE’s largest and most complex customers. Demonstrate knowledge across their business and their decision-making process, adding value and exceptional engagement - becoming a trusted and valued partner. Identify, create and close sales within three clients in the system integrator and construction sectors. Owning the sales cycle from end to end using SPIN methodology. Based remotely and on clients’ sites, generating and achieving accurate monthly revenue, total contract value and customer satisfaction forecasts. Drive customer satisfaction improvements, increasing NPS within the account

Nov 2007 - Jun 2010

Sales Manager

Bt

Working with BT's mobility division I managed and directed a sales force of 10 Specialist Sales Executives and Business Development Managers. Key responsibilities included:- ensuring the team met at each opportunity the CxO decision maker- attended weekly joint meetings- assisted and guidance with prospecting, cold calling, campaign design and event creation into BT Business’s clients.- creation of a robust business plan and employing a strategy to ensure success in meeting key sales, KPI and customer satisfaction via BT’s mobility, broadband and Wi-Fi portfolio. - close of sales opportunities including VoIP and convergence solutions such as BT Fusion, Office Anywhere & Datazone, together with solutions from key partners HTC, RIM and Mircosoft. Completion of both weekly and monthly financial and activation forecasts along with financial re-sourcing reviews and personnel functions. - creation of numerous sales incentives and calling days were key to continued success.

Jun 2006 - Oct 2007

Sales Manager/Account Director

Bt

Managed and directed a sales force of 3 Senior Account Managers, supporting 16 London headquartered, corporate clients. I had responsibility for 2 key financial clients maintaining the CxO relationships in both of these investment banks. I also aided my team with their with key meeting and opportunities as they presented themselves. Through creation of a robust business plan and employing a strategy to ensure success in meeting key sales, KPI and customer satisfaction across a broad technology portfolio including voice, infrastructure, mobility, desktop, applications, hosting, managed and outsourced services. Completed monthly forecasting, financial resourcing and personnel functions. Through the close relationships I built with partners such as Nortel, Cisco & EMC and BT’s numerous specialist and product groups I developed innovative and targeted collateral to support sales activity and to increase customer awareness of BT's portfolio ensuring maximum success was achieved.

Jul 2001 - Jun 2006

Account Manager

Concert Communications (Bt+At&T Jv)

Managed the relationship of a large global insurance company one of Concert’s top 10 European clients.

Sep 1999 - Jul 2001

Sales Advisor

Bt
1992 - 1994 ~2 yrs
Team & coworkers

Colleagues at Sopra Steria

Other employees you can reach at soprasteria.com. View company contacts for 48802 employees →

FAQ

Frequently asked questions about Jonathan Lassman

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What company does Jonathan Lassman work for?

Jonathan Lassman works for Sopra Steria.

What is Jonathan Lassman's role at Sopra Steria?

Jonathan Lassman is listed as Principal Sector Manager (Energy, Utilities, Oil and Gas, and Nuclear) at Sopra Steria.

What is Jonathan Lassman's email address?

AeroLeads has found 1 work email signal at @mac.com for Jonathan Lassman at Sopra Steria.

What is Jonathan Lassman's phone number?

AeroLeads has found 2 phone signal(s) with area code 780, 113 for Jonathan Lassman at Sopra Steria.

Where is Jonathan Lassman based?

Jonathan Lassman is based in Worthing, England, United Kingdom while working with Sopra Steria.

What companies has Jonathan Lassman worked for?

Jonathan Lassman has worked for Sopra Steria, Women In Defence Uk, Shared Services Connected Ltd, O2 (Telefónica Uk), and Ee.

Who are Jonathan Lassman's colleagues at Sopra Steria?

Jonathan Lassman's colleagues at Sopra Steria include Robin Wagner, Tristan Edou, Thomas Boudart, Yoann Dewilde, and Sandra Klever-Kosterman.

How can I contact Jonathan Lassman?

You can use AeroLeads to view verified contact signals for Jonathan Lassman at Sopra Steria, including work email, phone, and LinkedIn data when available.

What skills is Jonathan Lassman known for?

Jonathan Lassman is listed with skills including Managed Services, Account Management, Solution Selling, Strategy, Business Development, Management, Channel Partners, and New Business Development.

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