Software Engineer (Kotlin), Institutional at Blockchain.com

London, England, United Kingdom

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Not SpecifiedCompensation

Senior (5 to 8 years)Experience Level

Full TimeJob Type

UnknownVisa

Blockchain, FinTechIndustries

Requirements

Strong hands-on experience with Kotlin in backend and distributed systems development
Proven expertise building scalable APIs, microservices, and backend platforms for complex financial or data-intensive applications
Familiarity with cloud deployments and service-oriented architectures
Knowledge of messaging and streaming technologies (NATS, Kafka, or similar)
Solid understanding of algorithms, data structures, databases, and distributed systems
Knowledge of ledger systems (strong plus)
Passion for solving challenging technical and financial problems with clean, maintainable code
Commitment to quality-driven engineering, with a strong focus on testing (unit, integration, performance, and failure recovery)
Experience in fintech, trading, or wealth management platforms (strong advantage)

Responsibilities

Design and implement scalable, secure, and high-performance backend services in Java/Kotlin that power client-facing applications for trading, custody, and wealth management
Build robust APIs and microservices to support advanced dashboards, analytics tools, and mobile experiences
Collaborate closely with front-end engineers, product managers, and designers to deliver seamless, intuitive experiences for sophisticated investors
Architect solutions for portfolio management, trade execution, settlement, reporting, and analytics tailored to institutional and private clients
Optimize backend systems for low latency, high throughput, and fault tolerance
Integrate security best practices and advanced encryption to safeguard sensitive financial data
Continuously improve backend performance, reliability, and development workflows

Skills

Key technologies and capabilities for this role

KotlinJavaAPIsMicroservicesDistributed SystemsKafkaNATSCloud DeploymentsService-Oriented ArchitecturesSecurityEncryption

Questions & Answers

Common questions about this position

What is the compensation for this Software Engineer role?

The role offers a full-time salary based on experience along with meaningful equity in the company.

Is this a remote or in-office position?

This is a hybrid role based in the London office requiring mandatory in-office presence three days per week, with a Work from Anywhere Policy allowing remote work from anywhere in the world for up to 20 days per year.

What skills are required for this Software Engineer position?

Candidates need strong hands-on experience with Kotlin in backend and distributed systems, proven expertise building scalable APIs and microservices, familiarity with cloud deployments and service-oriented architectures, knowledge of messaging technologies like NATS or Kafka, and solid understanding of algorithms, data structures, databases, and distributed systems.

What is the company culture like at Blockchain.com?

Blockchain.com has a high-performance culture marked by fearlessness and hyper productivity, seeking hardworking team players with a desire to learn and grow.

What perks and benefits are offered?

Benefits include ClassPass, budgets for learning and professional development, unlimited vacation policy, Apple equipment, and the opportunity to build your career at a leading company.

Blockchain.com

Cryptocurrency trading and wallet services platform

About Blockchain.com

Blockchain.com offers a platform for buying, storing, and trading cryptocurrencies such as Bitcoin and Ethereum. Users can execute trades quickly, often in microseconds, thanks to the platform's advanced matching engine and deep liquidity. The company generates revenue through transaction fees, trading spreads, and premium services, catering to both individual and institutional clients. It allows users to deposit and withdraw various fiat currencies and provides an API for programmatic trading and live market data. Blockchain.com prioritizes security and reliability, ensuring the protection of users' funds and data.

London, United KingdomHeadquarters

2011Year Founded

$583.6MTotal Funding

SERIES_ECompany Stage

Fintech, Crypto & Web3Industries

501-1,000Employees

Benefits

Competitive Salary

Meaningful Equity

Crypto Bonus

HealthCare

Paid Family Leave

Get the equipment you need

Unlimited Vacation

Remote-first

Offsites

Risks

Increased competition from zero-knowledge identity projects like Humanity Protocol.

Cross-chain interoperability platforms may reduce Blockchain.com's competitive edge.

Operational risks from integrating Altonomy's systems into Blockchain.com.

Differentiation

Blockchain.com offers a comprehensive suite for buying, storing, and trading digital assets.

The platform integrates with a global banking network for multi-currency transactions.

Blockchain.com provides an institutional-grade API for programmatic trading and live market data.

Upsides

Blockchain.com raised $110 million in a Series E funding round.

Integration with Altonomy enhances Blockchain.com's trading platform capabilities.

Growing interest in privacy-focused blockchain solutions benefits Blockchain.com's offerings.

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