Senior Staff Software Engineer – Partner Integrations

Flex

. Oversee the technical roadmap for the Partner Integrations team .

Posted 9/18/2026full-timeRemote • United StatesSenior💰 $204,000 - $300,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive experience in software engineering and technical leadership, with a strong focus on delivering high-quality products and managing integrations with external partners. Proficient in collaborating with diverse teams and stakeholders to drive impactful solutions in a fast-paced FinTech environment.

Highest-signal resume keywords

Technical LeadershipAPI DevelopmentProduct DeliveryAWS Cloud ApplicationsFinTech Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software EngineeringAPI DevelopmentSDK DevelopmentProduct ManagementIntegration SolutionsData Sharing StandardsQuality AssuranceArchitecture DesignSolution DesignBusiness Impact Analysis

Soft Skills

CollaborationStakeholder ManagementOwnershipAdaptabilityCommunication

Tools & Technologies

AWSFlex AnywherePayment RailsWeb TechnologiesDevelopment Tools

Certifications & Qualifications

Bachelor's Degree in Computer Science

Industry Keywords

FinTechPartner IntegrationsExternal StakeholdersTechnical RoadmapGlobal Team Collaboration

Tech Stack

Tools & technologies

AWSCloudRuby on Rails

About the role

Key responsibilities & impact

Oversee the technical roadmap for the Partner Integrations team
Work across APIs, SDKs, and web experiences
Collaborate with Engineering, Product, Design, Infrastructure, Sales, Partner, and Customer Success teams
Execute hands-on as an individual contributor
Build products that support evolving product offerings
Standardize APIs, tools, and processes for external partner data sharing and payments across entry points such as Flex Anywhere
Lead delivery of multiple impactful products end to end

Requirements

What you’ll need

Bachelor or above degree in Computer Science or a related field
Minimum of 10 years experience in software engineering
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 code and architecture without compromising velocity
Ability to grow in a fast-paced and dynamic environment
Experience designing and developing solutions that maximize ROI and lead to significant business impact
Experience working in FinTech and familiarity with major payment rails
Experience working with Sales stakeholders and/or building products for Sales professionals
Experience building integrations with external partners and managing relationships with external stakeholders
Experience working on AWS cloud-based applications

Benefits

Comp & perks

Competitive medical, dental, and vision
Company equity
401(k) plan with company match
Unlimited paid time off + 13 company paid holidays
Parental leave
Free Flex subscription
Competitive compensation + company equity for full-time non-U.S. employees
Unlimited PTO for full-time non-U.S. employees