Full-Time

Senior Developer

Integrations

Posted on 11/30/2025

Fullsteam

Fullsteam

501-1,000 employees

Vertical SaaS holding company embedding payments

No salary listed

Remote in USA

Remote

Category
Software Engineering (1)
Required Skills
Microsoft Azure
AWS
REST APIs
AngularJS
Requirements
  • Bachelor's degree in Computer Science, Software Engineering, or a related field, or equivalent practical experience
  • 5+ years of professional experience developing back-end logic in .NET / C#
  • 2+ years experience developing front end UI with Angular
  • Solid understanding of REST APIs and asynchronous integration techniques
  • Experience working in a cloud environment (AWS or Azure preferred)
  • Strong written and verbal communication skills in a remote team setting
  • Authorized to work in the US or Canada
Responsibilities
  • Own feature delivery from design through release, working closely with product teams
  • Collaborate with front-end, back-end and partner teams on system integration flows, including REST APIs and event-driven messaging
  • Contribute to integration discussions and implementations with an emphasis on shared data models, cross-application communication, and inter-system reliability
  • Follow internal processes for security, testing, and deployment
Desired Qualifications
  • Experience contributing to platform-level integration efforts involving messaging systems, queues, or event-driven architecture is preferred
  • Familiarity with cloud-based platforms (AWS or Azure) and deployment best practices is strongly preferred
  • Ability to lead feature development end-to-end, from design to deployment
  • Proficiency in debugging and problem-solving in large, established codebases
  • Comfortable working within CI/CD workflows and modern development environments

Fullsteam buys founder-led vertical SaaS businesses and embeds its cloud-first payments platform into their software. After acquisition, payments processing like recurring payments, EMV, ACH, mobile payments, and automated reconciliation is built into the product, creating a single branded system for both business management and payments. The firm scales by growing its portfolio (over 75 software companies) through acquisitions and using its payments infrastructure across verticals, supported by investors such as Aquiline Capital Partners, Sixth Street, and the Abu Dhabi Investment Authority. Its goal is to improve profitability and speed growth for SMBs by delivering a unified payments ecosystem within each portfolio company across sectors like healthcare, field services, automotive, specialty retail, and association management.

Company Size

501-1,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Auburn, Alabama

Founded

2018

Simplify Jobs

Simplify's Take

What believers are saying

  • ADIA joins Aquiline as minority investor to accelerate software acquisitions.
  • Hired Dirk Izzo as President to bolster payments and operations leadership.
  • Acquired Limo Anywhere, expanding into ground transportation synergies.

What critics are saying

  • Post-acquisition integrations fail, causing Limo Anywhere churn in 6-12 months.
  • Stripe captures SMB payments in healthcare via superior APIs in 12-24 months.
  • CFPB rules fine automotive gateways, forcing compliance retrofits in 6-12 months.

What makes Fullsteam unique

  • Fullsteam acquires vertical SaaS firms and embeds proprietary cloud-first payments platform.
  • Portfolio exceeds 75 companies across healthcare, automotive, and field services sectors.
  • Founded in 2018 by Michael Lawler, integrates payments with AI, marketing, and insurance.

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Benefits

Hybrid Work Options

Growth & Insights and Company News

Headcount

6 month growth

1%

1 year growth

5%

2 year growth

3%
PYMNTS
May 2nd, 2024
Worldpay Launches Tap-To-Pay Offering For Merchants

Payment facilitators (PayFacs) using Worldpay’s services can now offer their merchants tap-to-pay on iPhone.The payments technology firm said in a Thursday (May 2) press release that two of its PayFac partners — Fullsteam and Autobooks — have already launched the service, which allows merchants to use an iPhone to securely accept contactless payments.“Many businesses are mobile, and if we can utilize existing business tools like iPhone as an untethered POS acceptance device, we are making their lives easier,” Fullsteam CEO Michael Lawler said in a news release. “With tap-to-pay on iPhone, those businesses can capitalize on the powerful technology already in a device that’s likely in their pocket. Fullsteam’s integration with Worldpay has made it easier to offer this advanced experience to our clients and their customers.”PayFac partners that want to offer tap-to-pay on iPhone can work with Worldpay to integrate its triPOS mobile toolkit into their point-of-sale app, according to the release. After integration, merchants using the app can accept all forms of contactless payments by using an iPhone to conduct the transaction.Tap-to-pay uses the built-in features of the iPhone to keep the merchant and customer data private and secure, per the release.“When a payment is processed, Apple doesn’t store card numbers or transaction information on the device or on Apple servers,” the release said.The launch comes amid increased digital wallet use among consumers.“Digital wallets can [provide] features intended to make the lives of users easier, such as the ability to store important documents like driver’s licenses, passports and event tickets.”However, PYMNTS Intelligence’s “Tracking the Digital Payments Takeover: Can New Use Cases Drive Consumer Use of Digital Wallets?” found that the enthusiasm for using digital wallets as a place for sensitive documents changes depending on who is asked.Although 51% of U.S. consumers, in general, expressed at least some interest in using digital wallet storage features, 78% of baby boomers and seniors said they had only a slight interest or no interest in storing documents on their devices.The excitement about using digital wallets to safeguard documents grows when younger consumers weigh in, as 49% of Generation Z consumers and 51% of millennials said they are extremely interested, while 46% of bridge millennials and 26% of Generation X consumers also showed the same level of interest in using special digital wallet features

EPASS Software
Jul 28th, 2023
NewsUser Meeting 2023 EPASS User Meeting 2023: July update

As announced earlier this year, EPASS has teamed up with Fullsteam—a leading software, technology, and payment services provider.

PEI Group
May 25th, 2023
Aquiline Capital and ADIA back software firm Fullsteam | PE Hub

Aquiline will remain as the lead investor in Fullsteam and ADIA will become a significant minority investor.

Limo Anywhere
Oct 13th, 2022
Exciting Announcement: Limo Anywhere, and all accompanying assets, acquired by Fullsteam. - Limo Anywhere

With great pleasure and excitement, we announce that Limo Anywhere has been acquired by Fullsteam, a portfolio company of a private equity fund with significant assets under management. With 60+ companies within the Fullsteam portfolio, Limo Anywhere will take advantage of new strategic synergies and shared resources never before seen in our company’s history. Fullsteam’s main […]

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