Jack Jennings
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Jack Jennings Email & Phone Number

Chief Financial Officer at 73 Strings
Location: London, England, United Kingdom 10 work roles 3 schools
1 work email found @sightcall.com 3 phones found area 203 LinkedIn matched
✓ Verified July 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email · 3 phones

Work email j****@sightcall.com
Direct phone (203) ***-****
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
73 Strings
Role
Chief Financial Officer
Location
London, England, United Kingdom
Company size
266 employees

Who is Jack Jennings? Overview

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Quick answer

Jack Jennings is listed as Chief Financial Officer at 73 Strings, a with 266 employees, based in London, England, United Kingdom. AeroLeads shows a work email signal at sightcall.com, phone signal with area code 203, and a matched LinkedIn profile for Jack Jennings.

Jack Jennings previously worked as Chief Financial Officer at Sightcall and Head of FP&A at Sightcall. Jack Jennings holds Graduate Diploma Of Chartered Accounting, Accounting from Institute Of Chartered Accountants Australia.

Company email context

Email format at 73 Strings

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{first}.{last}@sightcall.com
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AeroLeads found 1 current-domain work email signal for Jack Jennings. Compare company email patterns before reaching out.

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Profile bio

About Jack Jennings

With broad experience across SaaS and fintech companies, Jack is a proven finance leader who has successfully established and managed finance functions. With a background in FP&A, coupled with commercial and operational experience, Jack is a generalist who understands the importance of scalability and repeatability, required of growing business.Jack's cross-functional experience on key operational projects has allowed them to work across all levels of an organisation, from the c-suite down. He has raised capital and debt, managed relationships with bankers and debt providers, and coordinated product and commercial functions. He has worked with commercial teams to developed strategies for launching new products, entering new regions, and establishing new business verticals, and he has worked closely with the executive team and project managers to drive business transformation and optimisation programs. Jack has a track record of working with stakeholders at all levels of an organisation and working with high performance teams in fast-paced environments.

Listed skills include Accounting, Internal Controls, Budgets, Management, and 18 others.

Current workplace

Jack Jennings's current company

Company context helps verify the profile and gives searchers a useful next step.

73 Strings
73 Strings
Chief Financial Officer
London, GB
Website
73strings.com
Employees
266
AeroLeads page
Company profile
View company profile Email format
10 roles

Jack Jennings work experience

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

Chief Financial Officer

Current
Sightcall

San Francisco, Ca, Us

Reporting into the CEO and leading the finance, and revenue operations functions.

Mar 2023 - Present

Head Of Fp&A

Sightcall

San Francisco, Ca, Us

Nov 2021 - Mar 2023

Seed Investor

Current
Consultmed

Sydney, Nsw, Au

Jun 2021 - Present

Director Global Proposition At Calastone

Calastone

London, Gb

Calastone is the worlds largest mutual funds transaction network, with over 2,300 clients, 23,000 trading links, and carrying over £200bn of investments per month across 44 jurisdictions. As a Director in the Global Propositions team, my primary role was to act as a liaison between product and commercial, bringing the proposition of our products individually and collectively to life. A key component of this was to engage with the regional teams to drive initiatives with global clients. I was also heavily involved in the original proposition for Calastone's blockchain based DMI (Distributed market infrastructure) fund services and the original client engagements regarding this product group.With backing from Accel & Octopus Ventures, Calastone was acquired by Carlyle in December 2020.

Jan 2019 - Jul 2021

Director Business Optimisation

Calastone

London, Gb

This role was created to work with the executive team to coordinate and drive business transformation & optimisation program. Underlying this were several projects which I led or supported, as well as coordinating reporting to VC investors.My time in this role was interesting and challenging as the organisation underwent an internal restructure, launched new products and entered new markets.

Feb 2018 - Jan 2019

Associate Director Fp&A

Calastone

London, Gb

Joining Calastone's finance team in 2016 was an exciting experience. To begin my career in the UK as well as be planted into a newly reformed finance function trying to catch up with the needs of a company experiencing high revenue growth.We were able to establish an FP&A function while juggling multiple deal reviews, pricing requests and work required on RFx's.

Jan 2016 - Feb 2018

Auditor

Edwards Marshall Pty Ltd

Adelaide, South Australia, Au

- Assurance services for companies ranging from schools to medium sized companies and not for profit organisations.

Jan 2010 - Feb 2011
Team & coworkers

Colleagues at 73 Strings

Other employees you can reach at 73strings.com. View company contacts for 266 employees →

JM Justin Madjoupa Justin Madjoupa Colleague at 73 StringsChâteau-Thierry, Hauts-De-France, France View → AS Ajay Saday Ajay Saday Colleague at 73 StringsUnited Kingdom View → AA Aamir Ansari Aamir Ansari Colleague at 73 StringsBengaluru, Karnataka, India View → SM Sanket Mhaske Sanket Mhaske Colleague at 73 StringsPune, Maharashtra, India View → AJ Abilash J Abilash J Colleague at 73 StringsBengaluru, Karnataka, India View → MM Midhun Mylat Midhun Mylat Colleague at 73 StringsKannur, Kerala, India View → NC Nabil Chehab Nabil Chehab Colleague at 73 StringsContact Info, United States View → SD Suresh Dey Suresh Dey Colleague at 73 StringsBarjora, West Bengal, India View → SG Sidhi Goenka Sidhi Goenka Colleague at 73 StringsKolkata, West Bengal, India View → AS Ananya Singh Ananya Singh Colleague at 73 StringsBengaluru, Karnataka, India View →
3 education records

Jack Jennings education

Graduate Diploma Of Chartered Accounting, Accounting

Institute Of Chartered Accountants Australia

Bachelor Of Commerce, Accounting

University Of South Australia

South Australian Certificate Of Education

Brighton Secondary School
FAQ

Frequently asked questions about Jack Jennings

Quick answers generated from the profile data available on this page.

What company does Jack Jennings work for?

Jack Jennings works for 73 Strings.

What is Jack Jennings's role at 73 Strings?

Jack Jennings is listed as Chief Financial Officer at 73 Strings.

What is Jack Jennings's email address?

AeroLeads has found 1 work email signal at @sightcall.com for Jack Jennings at 73 Strings.

What is Jack Jennings's phone number?

AeroLeads has found 3 phone signal(s) with area code 203 for Jack Jennings at 73 Strings.

Where is Jack Jennings based?

Jack Jennings is based in London, England, United Kingdom while working with 73 Strings.

What companies has Jack Jennings worked for?

Jack Jennings has worked for 73 Strings, Sightcall, Consultmed, Calastone, and Tilbrook Rasheed Chartered Accountants.

Who are Jack Jennings's colleagues at 73 Strings?

Jack Jennings's colleagues at 73 Strings include Justin Madjoupa, Ajay Saday, Aamir Ansari, Sanket Mhaske, and Abilash J.

How can I contact Jack Jennings?

You can use AeroLeads to view verified contact signals for Jack Jennings at 73 Strings, including work email, phone, and LinkedIn data when available.

What schools did Jack Jennings attend?

Jack Jennings holds Graduate Diploma Of Chartered Accounting, Accounting from Institute Of Chartered Accountants Australia.

What skills is Jack Jennings known for?

Jack Jennings is listed with skills including Accounting, Internal Controls, Budgets, Management, Leadership, Financial Reporting, Financial Services, and Cash Flow.

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