Senior Back-End Developer, Engineering (Java / Kotlin)

Reposted 20 Days Ago
6 Locations
Remote
Senior level
Fintech • Payments • Software • Financial Services
The Role
The Senior Back-End Developer will own features, design modules, ensure security, and improve services while collaborating across teams in a finance-focused environment.
Summary Generated by Built In

About Echo Base

Echo Base is a privately funded investment platform focused on special situations and strategic opportunities within the digital asset ecosystem. We acquire, finance, and build companies where our operational expertise and capital can unlock outsized value. Our team combines institutional investment discipline with crypto-native insight to identify and execute on complex opportunities across the industry’s most dynamic segments.

The Role

The Senior Software Engineer is a seasoned professional with at least 6 years of experience in software development. Specialized in finance or crypto within the technology industry, this individual excels in leading problem-solving, driving coding excellence, ensuring comprehensive testing, and adopting scalable and secure software implementations for solutions in areas like trading, swapping, regulatory compliance, fraud detection, automation, and more.

What You'll Do

As a Senior Full Stack Engineer on our core engineering team, you will:

  • Take end-to-end ownership of features (backend, API, frontend integration, deployment)
  • Design and build new modules (exchange connectors, order routing, wallet / transaction modules, alerts engine)
  • Improve, maintain, and scale existing services
  • Implement, enforce, and monitor APIs to external crypto exchanges (REST, WebSocket, FIX where applicable)
  • Work on state synchronization, caching, rate limits, backpressure, and resilient connectivity
  • Ensure system security and correctness (authentication, authorization, encryption, safe handling of keys / wallets)
  • Participate in architectural decisions and roadmap planning
  • Occasionally interface with DevOps / infrastructure to deploy, monitor, and maintain production services

What We’re Looking For

  • A comprehensive grasp of Crypto and Crypto Trading.
  • Excellent analytical, critical thinking, and problem-solving skills in financial technology contexts.
  • Outstanding testing practices, TDD, unit, integration, e2e testing, (JUnit or similar frameworks)
  • Ability to manage, coordinate, and prioritize work with multiple team members for delivering software with quality in time.
  • Strong communication skills and an ability to collaborate cross-functionally with product, engineering, and other departments.
  • Able to explain technical concepts to both technical and non-technical stakeholders.
  • Must be located in the Americas or Europe (between time zones UTC-5 and UTC+3).
  • Solid track record of over 10 years demonstrating mastery of Java, Kotlin, Swift, mainly in production applications.
  • Solid experience in administration, modeling, optimization techniques in SQL and NoSQL databases.
  • Knowledge of software for interface prototyping and wireframing like Figma.
  • Understanding of Git and branching models for coordination with team members.

Preferred / Bonus:

  • Past experience in crypto / fintech / trading systems
  • Experience interacting with blockchain / smart contracts / wallets / DeFi systems
  • Experience with FIX, exchange protocols, order routing logic
  • Experience with containerization / orchestration (Docker, Kubernetes)
  • Experience with CI/CD pipelines, DevOps knowledge
  • Experience in microservices / domain-driven design, event-driven architectures
  • Experience with high throughput & low latency systems
  • Hands-on experience working with release management and architecting within cloud platforms like AWS.
  • Familiarity with network security, traffic encryption, and authentication protocols.
  • Expertise in utilizing in-memory databases like Redis and Memcached, and processing queues such as Apache Kafka, or RabbitMQ, or standards like AMQP.
  • Enhanced skills in other programming languages like Golang and Java are highly valued.

Top Skills

Apache Kafka
AWS
Ci/Cd
Docker
Figma
Git
Java
Kotlin
Kubernetes
Memcached
NoSQL
RabbitMQ
Redis
SQL
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
74 Employees
Year Founded: 2025

What We Do

Echo Base Global is a digital finance company creating an end-to-end crypto ecosystem built on Web3 technology. Echo Base drives interoperability across its products to create an integrated, user-first experience that simplifies the complexity of interacting with digital assets. Est. 2025.

Inquiries: [email protected]

Similar Jobs

GitLab Logo GitLab

Security Engineer

Cloud • Security • Software • Cybersecurity • Automation
Easy Apply
In-Office or Remote
36 Locations
2500 Employees

GitLab Logo GitLab

Back-end Engineer

Cloud • Security • Software • Cybersecurity • Automation
Easy Apply
In-Office or Remote
32 Locations
2500 Employees

GitLab Logo GitLab

Senior Director, Professional Services

Cloud • Security • Software • Cybersecurity • Automation
Easy Apply
Remote
28 Locations
2500 Employees

Mondelēz International Logo Mondelēz International

Program Manager

Big Data • Food • Hardware • Machine Learning • Retail • Automation • Manufacturing
Remote or Hybrid
Greece
90000 Employees

Similar Companies Hiring

Rain Thumbnail
Web3 • Payments • Infrastructure as a Service (IaaS) • Fintech • Financial Services • Cryptocurrency • Blockchain
New York, NY
70 Employees
Scotch Thumbnail
Software • Retail • Payments • Fintech • eCommerce • Artificial Intelligence • Analytics
US
25 Employees
Milestone Systems Thumbnail
Software • Security • Other • Big Data Analytics • Artificial Intelligence • Analytics
Lake Oswego, OR
1500 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account