Oversee the technical roadmap for partner integrations at a growth-stage FinTech company focused on rent payment solutions.
Posted by employer 15 hours ago
First seen on Joblaze 5 hours ago
Last verified on the company career page 5 hours ago
What you'll build
- Oversee the technical roadmap for the team
- Work across APIs, SDKs, and Web experiences
- Collaborate with Engineering, Product, Design, Infrastructure, Sales, Partner and Customer Success teams
- Build products that allow for flexibility
- Lead the delivery of multiple highly impactful products
Must have
- 10+ years experience in software engineering
- 3+ years of technical leadership experience
- Experience working with technical and non-technical stakeholders
- Experience in designing and developing solutions that maximize ROI
- Experience working in FinTech
Nice to have
- Experience working with Sales stakeholders
- Experience building integrations with external partners
- Experience working on AWS cloud based applications
Role intensity
40% coding
Requirements
- Experience
- 10+ years
- Education
- Bachelor's degree
Not disclosed in this posting: visa sponsorship.
Benefits
Joblaze summary
In the role of Senior Staff Software Engineer for Partner Integrations at Flex, the individual will manage the technical roadmap while collaborating with various teams to enhance APIs and SDKs that facilitate external partner connections. Key skills include extensive software engineering experience, technical leadership, and familiarity with FinTech and payment systems. This position is ideal for seasoned engineers who thrive in a hands-on environment and are adept at navigating complex stakeholder relationships. Flex is a growth-stage FinTech company focused on improving the rent payment experience.
Joblaze insights
- Listed today — first seen on Joblaze September 19, 2026. Last confirmed on Flex's careers page September 19, 2026.
- Salary band is above the typical range for Backend roles (median ~$180,000).
- Starts above 87% of 128 comparable staff backend roles that list AWS we track (median $200,000 across 57 companies). See AWS salary trends
- AWS appears in 32.2% of 615 comparable staff backend roles; SDKs appears in 0.2% of 615 comparable staff backend roles.
Quick facts
- Is the Senior Staff Software Engineer, Partner Integrations role remote?
- Yes — Flex lists this as a fully remote position.
- What's the salary range?
- Flex lists $240,000–$300,000 for this role.
- How much experience is required?
- At least 10 years of relevant experience for this Senior Staff Software Engineer, Partner Integrations role.
- What's the tech stack?
- Joblaze extracted these technologies from the posting: APIs, AWS, SDKs.
- What seniority level is this role?
- Flex targets staff-level candidates for this position.
- Is this full-time or contract?
- Full-time for this Senior Staff Software Engineer, Partner Integrations role at Flex.
From the original posting
Flex is a growth-stage, NYC headquartered FinTech company that is creating the best rent payment experience. It’s hard to believe that it’s 2026 and paying rent on time is expensive, inflexible, and difficult. We’re here to change that! Flex enables our users to pay rent throughout the month on a schedule that better fits their finances and budget. Our mission is to empower as many renters as possible with flexibility over their most significant recurring expense. After deliberately keeping a stealth profile as we built up unprecedented investor support and an enthusiastic user base, we are looking for motivated individuals to help us keep our mission growing. Will you be a part of the team?
About Our Opportunity
Flex 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 Flex for data sharing and payments across entry points like Flex 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 Flex’s internal leveling guidelines and benchmarks.
Life at Flex
Benefits
For full-time non-U.S. employees, we offer:
- Competitive compensation + company equity
- Unlimited PTO
Standard company text repeated across Flex's postings is omitted here.