Senior Staff Software Engineer, Partner Integrations

Company shown to members 🔒 · Remote · US only

US only10+ years required$240K–300K/yrPublished 18 September 2026Looks fresh

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First recorded by Psst: 12 October 2026. Your first 3 jobs are free to apply to (the first right away, 2 more with your email). After that, the company and the apply link are for Psst members, from $4.99 for 7 days.

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The 20-second read

Experience
10+ years required
Where you can live
US only
Skills and tools
aws, customer success
Degree or licence
Mentioned (bachelor)

Read from the ad by Psst's rules. Check the full ad below before applying.

Job details

Where you can work
United States
Employment type
Not stated by the employer
Advertised pay
$240K–300K/yr
Experience
10+ years required
Employer publication date
18 September 2026
First recorded by Psst
12 October 2026
Last checked at the source
10 November 2026

About the job

The company is a growth-stage, NYC headquartered FinTech company that is building the payment layer for life's financial obligations, giving households one place to see, split, and pay their bills around how they live and get paid. By offering greater choice over how and when payments are made and allowing eligible on time payments to help build a positive credit history, the company puts households back in control of their cash flow.

That work brings together people with different perspectives who challenge the status quo and take ownership of solving difficult problems. For you, that means doing the best work of your career next to people who make you better, and together bringing ideas to life that make a real impact for the people we serve.

About Our Opportunity

The company exists to make paying rent work the way real life actually works — smoothing out cash flow, helping renters avoid late fees, and letting them build credit instead of falling behind. As a Senior Staff Software Engineer, you'll oversee the technical roadmap for the team, working across APIs, SDKs, and Web experiences. You will work with teams across the organization including Engineering, Product, Design, Infrastructure, Sales, Partner and Customer Success to ensure that the technical strategy meets our goals. We expect you to be hands-on and execute work as an individual, and build products that allow for flexibility as we evolve our product offerings.

About Our Team!

We have some really exciting teams who are looking for an amazing engineer like you! Check them out!

  • Partner Integrations - Partner integrations work to standardize APIs, tools, and processes that let external partners connect to the company for data sharing and payments across entry points like the company Anywhere

Who thrives here?

  • A Doer — you get things done efficiently, and you're comfortable rolling up your sleeves when something's blocking the team.
  • An Owner — you take full accountability for what you build, from design through production, and you always have a plan B.
  • Someone Collaborative — you bring people together to pressure-test ideas rather than working in a silo.
  • Someone with Precision — your code and your communication are both clear, because ideas only matter once others can act on them.
  • Someone Resilient — systems break and priorities shift, and you adapt without losing momentum.
  • Someone Humble — you care more about getting to the right answer than being the one who's right.

Qualifications

  • Bachelor or above degree in Computer Science or a related field
  • Minimum of 10 years experience in software engineering, with at least 3 years of technical leadership experience in a hands-on capacity
  • Ability to work on a globally-distributed team with a high degree of ownership
  • Experience leading the delivery of multiple highly impactful products end to end, on time with a high quality bar
  • Experience working with technical and non-technical stakeholders, successfully aligning and setting expectations on scope and delivery
  • Ability to drive yourself and your team to bring quality and consistency to their code and architecture, without compromising velocity
  • Ability to grow in a fast-paced and dynamic environment that will challenge you to always bring your best
  • Experience in designing and developing solutions that maximize ROI and lead to significant business impact
  • Experience working in FinTech and familiar with major payment rails
  • Experience working with Sales stakeholders and/or building products for Sales professionals
  • Experience building integrations with external partners & managing relationships with external stakeholders
  • Experience working on AWS cloud based applications

Compensation

Flex takes a market-based approach to pay, and compensation may vary depending on your primary work location. Work locations are categorized into one of three tiers based on a cost of labor index for that geographic area. The successful candidate’s starting pay will be commensurate with their experience, qualifications, and the company’s internal leveling guidelines and benchmarks.

Tier 1 (NYC/Bay Area, Los Angeles, Seattle)

$240,000 — $300,000 USD

Tier 2 (Austin, Washington D.C. Philadelphia, San Diego, Chicago, Atlanta)

$216,000 — $270,000 USD

Tier 3 (Salt Lake City, all other USA cities)

$204,000 — $255,000 USD

Life at the company

Building a successful company takes a diverse team of intelligent, curious, determined, empathetic, and self-aware people. Our headquarters is in New York City, with employees across the US, Australia, Canada, and South America. We’re growing quickly and deliberately, with a focus on building an inclusive culture. We value the perspectives our people bring and take pride in being an equal opportunity workplace.

Offices

Roles posted in New York, San Francisco, and Salt Lake City are hybrid positions with on-site expectations of 2-3 days per week in our local offices. For candidates outside of these areas, you may be eligible for our relocation assistance program.

Benefits

View our benefits and more at getflex.com/careers .

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