Java Software Engineer

Source: remoteok

About the Role

We are a leading trading platform expanding globally. Our top-rated products have won industry awards for their cutting-edge technology and seamless client experience. We are looking for great Engineers with an interest in trading to join our Backend Team. Our Engineering team ensures the robustness, speed, and security of our product.

We are looking for someone who is eager to go fast, willing to innovate and grow, who knows how to listen, respect and support, strives to exceed client expectations, and takes full ownership to achieve real results.

Core Responsibilities

Design and build scalable, low-latency, and high-performance backend services
Develop distributed and asynchronous systems ensuring reliability and fault tolerance
Optimise performance across JVM, databases, caching, and networking layers
Apply security best practices in handling client PII and financial transactions
Use event-driven architectures and modern messaging solutions (e.g. Kafka)
Collaborate with cross-functional teams to align architecture with business needs
Maintain high code quality through testing, code reviews, and CI/CD practices
Leverage AI tools to accelerate development, testing, and delivery

Additional Core Responsibilities (Crypto Focused)

Design and build backend systems for custody, wallet services, staking, and trading.
Implement secure key-management and transaction-signing workflows (multisig, MPC, HSM).
Integrate with blockchain nodes, custody providers, CEX/DEX APIs, and staking protocols.
Support the integration of third-party staking service providers and manage the associated workflows, including delegation, monitoring, and reward distribution.

What You Will Need: Experience & Domain Knowledge

Proven experience in FinTech, Banking, or related financial domains
Strong understanding of distributed systems architecture and the client–server model
Ability to design and maintain scalable, low-latency, high-performance systems
Solid knowledge of concurrency, multithreading, and asynchronous programming
Awareness of security best practices in handling PII and financial transactions
Basic understanding of network protocols and troubleshooting
Experience working in a product-led fast-paced environment as a team player

Additional Experience & Domain Knowledge (Crypto Focused)

Strong understanding of blockchain fundamentals: consensus, mempool, finality, gas mechanics, security considerations, and transaction lifecycles.
Hands-on experience with major chains (e.g., Ethereum, Bitcoin, Solana, Cosmos, Polygon).
Deep experience with wallet systems, key management, multisig/threshold signatures, hot/cold wallet architecture, and secure signing pipelines.
Experience with custody platforms (Fireblocks, BitGo, Ledger Enterprise, Copper) or building custody-grade internal wallet infrastructure.
Practical experience with staking/validator operations, including rewards, uptime, monitoring, and slashing mitigation.

Technical Skills

Java and Spring: Advanced knowledge of Java Core technologies and the Spring framework
Data Mastery: Proficiency with SQL databases, ensuring optimal performance, structure, and replication
Concurrency & Async programming: advanced understanding and hands-on experience in asynchronous programming methods.
Events streaming: Understanding of the event driven architecture (Kafka or similar solutions).
Operational Proficiency: Understanding and hands-on experience with Ops activities, Kubernetes, pipelines, Fit Flow and modern CI/CD patterns and strategies
AI tools: ability to effectively use AI technologies in engineering work e.g. applying AI for coding assistance, debugging, testing, documentation, and optimisation of workflows

Soft Skills

Communication: Effective communication skills, especially with teams responsible for security, operations and product
Analytical thinking: Ability to tackle and investigate complicated problems and convert it to the task
Adaptability to Rapid Changes: Demonstrated capability to adjust to quick technological shifts and evolving business requirements
Ownership and Accountability: Readiness to take ownership of tasks, issues as well as demonstrate accountability of the results and outcome

Nice to Have

Performance: Knowledge of JVM performance optimization practices
No-SQL: Experience working with no-SQL databases is a big plus
In-memory storage: Strong knowledge of in-memory cache solutions
Familiarity with double-entry accounting
Understanding of DeFi protocols, liquidity mechanisms, yield strategies, or governance systems.
Exposure to MEV concepts, transaction simulation, or on-chain execution optimization.

What You Will Get in Return

Competitive salary and annual performance-based bonus
Generous annual leave policy
Health insurance and pension fund, with additional benefits depending on location
Hybrid working model (3 days from office) or fully remote across the country of employment
Workation policy (30 days remote from anywhere in the world)
Two additional paid days per year dedicated to volunteering

Be a key player at the forefront of the digital assets movement, propelling your career to new heights! Join a dynamic and rapidly expanding company that values and rewards talent, initiative, and creativity. Work alongside one of the most brilliant teams in the industry.