Koinly
Frontend Staff Engineer
RemoteNot specified
- Role
- Frontend
- Experience
- Staff
- Employment
- Full-time
Salary not disclosed
Check eligibility
The listing doesn't say where it hires from. Check the description or the employer's site before applying.
No BS summary
Staff Frontend Engineer with extensive experience in building and scaling complex web applications. Must have deep expertise in modern JavaScript frameworks and a strong understanding of system design and architecture. Experience with performance optimization and mentoring junior engineers is essential.
Core skills
TypeScriptReactSystem Design
Required skills
JavaScriptNode.jsHTMLCSSWebpackBabelESLintPrettierJestCypressGitCI/CDAWSDockerKubernetesSQLPostgreSQLRedisGraphQLREST
Optional skills
Experience with performance optimizationExperience with mentoring junior engineersExperience with building scalable systemsExperience with testing frameworksExperience with cloud platformsExperience with containerizationExperience with databasesExperience with API design
Required languages
English C1
<p><span>Koinly</span><span> is a successful product used by crypto investors around the world, helping them make sense of complex portfolios and tax obligations across chains, wallets, exchanges, and Defi protocols. The bar is simple to describe and hard to deliver: a user should be able to reconcile thousands of transactions and file their taxes in under 20 minutes.</span></p><p><span>We're looking for a <strong>Frontend Staff Engineer</strong> to take deep ownership of our data platform - the engine behind products at the intersection of crypto, finance, and tax. You'll work across a modern React web application and a high-performance distributed data-processing backend, with a new React Native mobile app joining your scope in the future.</span></p><p><span>This is a senior, hands-on role for someone who combines exceptional architecture/engineering craft with complete ownership of the visual and UI layer. In our engineering-driven environment, we do not rely on dedicated UI designers. You are expected to lead by example: writing high-quality code, making sound architectural decisions, and taking personal pride in building intuitive, highly polished UI components that users interact with daily.</span></p><p><span>We’re a remote-first, async-first startup with deep product-market fit. If you value autonomy, technical excellence, and clear communication over meetings and process complexity, Koinly is the place for you.</span></p><p><span><strong id="docs-internal-guid-74d17e83-7fff-71f8-4676-135eca9b646b">Read on for responsibilities, requirements, and who we are. 👇</strong></span></p><figure data-alignment="left" class="relative" style="width:fit-content;margin-left:0px;margin-right:auto;"><img 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
What you'll do
- Lead the design and development of new frontend features and applications.
- Write high-quality, maintainable, and scalable code.
- Collaborate with product managers, designers, and other engineers to define and implement product roadmaps.
- Mentor and guide junior frontend engineers.
- Optimize frontend performance and ensure a seamless user experience.
- Contribute to the development of our CI/CD pipelines and testing strategies.
- Stay up-to-date with the latest frontend technologies and best practices.
What they require
- 5+ years of experience in frontend development.
- Proven track record of building and scaling complex web applications.
- Deep expertise in modern JavaScript frameworks (e.g., React, Vue, Angular).
- Strong understanding of system design and architecture.
- Experience with performance optimization and testing.
- Excellent communication and collaboration skills.
- Ability to mentor and guide junior engineers.
Benefits
- Competitive salary and equity.
- Health, dental, and vision insurance.
- Generous paid time off.
- Remote work opportunities.
- Professional development budget.
- Team events and offsites.
Koinly is a product used by crypto investors around the world to manage complex portfolios and tax obligations across chains, wallets, exchanges, and DeFi protocols.
Salary not disclosed