Back End Engineer

Fold Health

Software Engineer building scalable backend services for Bitcoin financial infrastructure. Designing transaction processing and integrating with banking APIs in a fully remote team.

Posted 5/27/2026full-timeRemote • 🇺🇸 United StatesJuniorMid-LevelWebsite

Tech Stack

Tools & technologies

CloudDistributed SystemsJavaKafkaKotlinMicroservicesPulsarScala

About the role

Key responsibilities & impact

Designing and implementing scalable, reliable backend services that handle real-time transaction processing
Building and evolving event-driven systems for processing financial events
Integrating with external partners — card processors, banking APIs, payment networks
Contributing to features from design through deployment, with support from senior engineers
Collaborating closely with product, design, and fellow engineers to ship quickly and iteratively
Contributing to engineering practices and tooling as the team grows

Requirements

What you’ll need

2-4 years of professional software engineering experience with strong proficiency in Java or a similar statically-typed language (Kotlin, Scala, C#)
Experience with microservices and distributed systems in production
Experience with messaging or event streaming systems (Kafka, Pulsar, or similar)
Solid understanding of relational databases with an intuition for data modeling and transactional consistency
Comfort working with cloud infrastructure, CI/CD pipelines, and containerization
Able to work in a fast-paced environment
Strong communication skills and a collaborative, low-ego mindset

Benefits

Comp & perks

We’re a highly collaborative, fully remote team
Flexible work schedule, including flexible time off
Competitive salary
Equity package
401k with employer match up to 3%
Yearly vacation stipend
Comprehensive health, vision and dental insurance, including HSA and FSA accounts
Paid parental leave
Regular in-person team meetups to socialize and co-work
New to Bitcoin? We offer all our new hires a “starter pack” to get you up to speed, including learning materials about Bitcoin and your own hardware wallet.
And much, much more!

ATS Keywords

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Hard Skills & Tools

JavaKotlinScalaC#microservicesdistributed systemsmessaging systemsevent streamingrelational databasesdata modeling

Soft Skills

strong communication skillscollaborative mindsetlow-ego mindsetability to work in fast-paced environment