Software Engineer II

Remote from: USA
Annual salary: Undisclosed
Salary information is not provided for this position. Check our Salary Directory to estimate the average compensation for similar roles.
Department: Software Engineering
Employment type: Full Time,
Job posted: 8 Oct 2025
Apply before: 8 Nov 2025
Experience level: Midweight
Views / Applies: 7 / 2

About Flex

Sketching the future of intelligent ecosystems.

Actively Hiring

Flex is building a finance super app for premium business owners — reimagining every single aspect of the financial workflow and financial services for any entrepreneur. The company has grown revenue 25x+ since publicly launching in September 2023 and is on track to achieve profitability by late 2025. Flex is focused on mid-market businesses ($3 – $100M revenue) that are largely overlooked by existing fintech solutions and reliant on slow and outdated regional banks. We are targeting a ~$1T revenue opportunity that is largely up for grabs.
Flex

is a fully remote company and this role can be performed from anywhere.
🕺About the Role
We’re looking for a Software Engineer II to help build product features that power financial services. You’ll work on systems that handle payments, credit, and other core products that our customers rely on daily to drive business operations.

✅ What You’ll Do

Own the full lifecycle of medium-sized features and tasks across our product stack
Build user-facing features, internal tools, APIs, and backend services
Write clear, maintainable, and tested code that you’ll be responsible for long-term
Participate in code reviews and provide timely feedback to teammates
Build features with the end product and user in mind, not just the code
Reason carefully about how your work extends in service of larger product needs
Build upon systems and features that others depend on
Balance speed with reliability and compliance in a regulated environment
Collaborate with other engineers and product team members to deliver high-impact work

⚡️What Makes You a Great Fit

Have strong fundamentals in software development and ability to work effectively within established systems
Product sense—you think about the user impact and business value of your work
Ability to take responsibility for the maintenance and quality of what you build
Experience with financial services, regulated industries, or handling sensitive data is a plus but not required
Ability to research and proactively solve problems, bring solutions to the table
English proficiency
A strong work ethic

Technical environment: We primarily use Typescript, PostgreSQL, and GCP. We are building in a monorepo with a lean towards rapid value creation through trunk based development. Deploying to production 3-5 times a week is the average velocity of a team member.
What matters to us: We value ownership, product sense, and clear communication. You should be someone who thinks beyond just shipping code to understanding the impact on users and the business. We’re a small team, so everyone wears multiple hats and jumps in where needed.

Why Join Us

Flex is growing quickly — you’ll help shape the direction of a product and company with real momentum.We’re well-capitalized with strong backing and a clear long-term vision.You’ll work with a sharp, driven team that values autonomy, clarity, and quality.Join ambitious builders who care deeply about winning together — and having fun while doing it.Annual team on-sites. From Bogota to Mexico City, the entire Flex team gets together once a year to align and build camaraderie.

Apply now >