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Scala Developers

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Coralogix
ZF
Riskified
Hypervolt
Paidy
Tiko
Writer
Commercetools
Ledger
CNH
SiriusXM
Leonteq
Arteris
ITV
Linklaters
ClearScore
Guardian
VakantieDiscounter
IOHK
Coralogix
ZF
Riskified
Hypervolt
Paidy
Tiko
Writer
Commercetools
Ledger
CNH
SiriusXM
Leonteq
Arteris
ITV
Linklaters
ClearScore
Guardian
VakantieDiscounter
IOHK
353+
Verified Candidates
11+
Avg. Years Experience
Top Skills
Scala Kubernetes Docker Java
Deep Scala Network

Built through years working with teams and engineers in the Scala ecosystem.

Deep Technical Focus

We specialize in functional backend systems, data platforms, and distributed infrastructure.

Signal Over Volume

Focused, relevant introductions from a curated network.

Available Developers

EL-6427 Principal Recently added

Senior Scala Engineer

Switzerland
15 years
Remote
Employee / Freelancer

Architected event-driven systems leveraging Event Sourcing and CQRS to ensure data consistency. Pioneered the use of Scala for building scalable, fault-tolerant distributed applications. Designed and implemented microservices to support large-scale fintech platforms.

  • Integrated TypeScript for enhanced front-end type safety
  • Developed domain-driven design models for enterprise applications
  • Implemented Dart-based solutions for cross-platform mobile applications
Scala Java TypeScript Dart Event Sourcing CQRS
Interviewing now £140k-150k/yr
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AE-4003 Lead Recently added

Senior Staff Application Engineer

United Kingdom
13 years
Flexible
Employee / Freelancer

Specialized in building high-availability distributed systems for financial transaction processing, handling millions of transactions per second. Developed a microservices architecture for a real-time analytics platform, optimizing data throughput and latency. Implemented consensus protocols to ensure data integrity across a multi-region cloud infrastructure.

  • Architected a scalable event-driven messaging system using Kafka
  • Designed RESTful APIs for a global e-commerce platform
  • Integrated Rust for performance-critical components in data pipelines
  • Optimized SQL queries for a 10TB data warehouse
Scala SQL Typescript Java Rust Backend
Available in 1 month Salary on request
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#HIRED Lead Recently hired

Lead Scala Engineer

Spain
6 years
Hybrid
Employee
Experienced software engineer with strong background in distributed systems and cloud-native architecture. Proven track record delivering production systems at scale. Skilled in designing fault-tolerant services, optimising CI/CD pipelines, and mentoring junior developers across cross-functional teams.
  • Led migration of monolithic system to microservices architecture
  • Built high-throughput data pipeline processing 1M+ events per second
  • Designed and implemented real-time monitoring and alerting platform
Scala Spark Flink Airflow GCP Python Delta Lake Docker
Hired Salary: $XXX,XXX
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EE-6829 Lead

Scala Contractor

United Kingdom
19 years
Flexible
Employee / Freelancer

Led the development of large-scale distributed systems handling billions of transactions daily. Specialized in building high-performance backend systems for financial analytics platforms. Developed containerized microservices architectures using Docker to enhance scalability and reliability.

  • Optimized data processing pipelines for real-time analytics
  • Implemented custom Unix-based tools for system monitoring
  • Developed complex scripting solutions in Perl for data migration
Scala Python Perl Linux Unix Docker
Available in 2 weeks £120k-140k/yr
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NL-1941 Principal

Senior Scala Developer

Netherlands
25 years
Flexible
Freelancer

Specialized in designing distributed systems with a focus on real-time data processing pipelines. Led the development of a high-performance, event-driven architecture leveraging Scala and ZIO for fault tolerance and scalability. Optimized cross-service communication using gRPC for microservices in a large-scale enterprise environment.

  • Implemented custom Tapir-based API gateway solutions
  • Architected SQL-driven data analytics platforms
  • Developed concurrent processing frameworks with Java
  • Enhanced system resilience with advanced ZIO constructs
Scala ZIO Java SQL gRPC Tapir
Interviewing now €143-158/hr
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SF-4260 Lead

Open Source Maintainer

Portugal
8 years
Flexible
Employee / Freelancer

Led the development and maintenance of a widely-used open-source Scala library, focusing on concurrency and performance improvements. Contributed to the DIDComm protocol implementation, enhancing secure communication for decentralized applications.

  • Developed containerized applications using Docker and Scala.js
  • Implemented advanced error handling with ZIO
  • Optimized Linux-based environments for high-performance computing
Scala Scala.js Linux ZIO Docker DIDComm
Interviewing now €90k-120k/yr
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AM-1682 Mid-level

Scala Backend Developer

Poland
3 years
Flexible
Employee / Freelancer

Developed high-throughput data processing pipelines using FS2 and Cats Effect. Implemented tagless-final style architectures to enhance modularity and testability of backend services. Contributed to the design of a reactive microservices ecosystem optimized for fault tolerance.

  • Built scalable event-driven systems with Scala and Kafka
  • Integrated functional programming paradigms for robust error handling
  • Optimized JVM performance for low-latency applications
Scala Java Cats Cats Effect FS2 tagless-final
Available in 2 weeks €30k-35k/yr
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AN-6869 Senior

Fullstack developer

France
9 years
Remote
Employee / Freelancer

Developed a distributed event-driven microservices platform for financial transactions processing. Designed a high-performance, fault-tolerant data pipeline handling over 10 million events per day. Implemented a real-time analytics dashboard using Scala and Go for monitoring system metrics and user activity.

  • Optimized SQL queries for sub-second response times
  • Built RESTful APIs in Scala for e-commerce platforms
  • Integrated third-party authentication services using OAuth2
  • Implemented CI/CD pipelines with Bash and Python scripting
Scala Go Python Java SQL Bash
Available in 3+ months €65k-70k/yr
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AL-9947 Principal

Senior Scala Developer / Team Leader

Poland
12 years
Remote
Employee / Freelancer

Led the development of a distributed event-driven microservices architecture using Akka and Play. Specialized in high-performance, non-blocking I/O operations and asynchronous data processing. Designed scalable RESTful APIs for large-scale enterprise applications, optimizing database interactions with Slick.

  • Implemented custom streaming solutions using Akka Streams
  • Optimized performance of real-time data pipelines
  • Architected distributed systems for fintech applications
Scala Akka Play Http4s Cats Slick
Available in 1 month Salary on request
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EH-3800 Principal

Senior Scala Developer

Netherlands
19 years
Flexible
Employee / Freelancer

Built distributed microservices architecture handling millions of requests per second. Architected real-time data processing pipelines using Akka and Kafka for high-throughput applications. Designed and deployed scalable cloud infrastructure on AWS for global reach applications.

  • Implemented event-driven systems with Akka Streams
  • Optimized JVM performance for large-scale enterprise applications
  • Developed multi-region failover strategies on AWS
Scala Java Python Akka Kafka AWS
Interviewing now €50k-80k/yr
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JF-3412 Senior

Founding Scala Software Engineer

France
7 years
Employee / Freelancer

Co-founded a startup focusing on distributed systems and microservices with Scala. Designed APIs for scalable data-driven applications. Integrated complex SQL queries for data-intensive backend processes.

  • Co-founded startup in distributed systems
  • Designed scalable APIs
  • Integrated complex SQL queries
Python Scala SQL API Design Microservices Distributed Systems
Salary on request
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ES-7679 Mid-level

Backend Engineer

United States
4 years
Flexible
Employee / Freelancer

Developed distributed data processing systems leveraging Scala and Java, optimizing performance for real-time financial analytics. Integrated complex SQL queries into backend services to support dynamic reporting features in a high-traffic e-commerce platform. Implemented RESTful APIs using TypeScript to enhance interoperability across microservices.

  • Optimized database interactions for a 1TB daily transaction system.
  • Built event-driven architecture using Kafka for asynchronous processing.
  • Automated deployment pipelines with Bash for continuous integration.
  • Enhanced frontend-backend communication with WebSocket protocols.
Scala Java SQL TypeScript JavaScript Bash
Interviewing now Salary on request
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SS-9069 Senior

Software Engineer, Backend

Singapore
6 years
Flexible
Employee / Freelancer

Engineered backend systems using Scala with a focus on functional programming. Built fault-tolerant services with ZIO for distributed systems. Developed GraphQL APIs using Caliban for seamless client-server interactions.

  • Utilized Cats library for functional programming patterns
  • Optimized SQL queries for high-volume transaction systems
  • Developed Python utilities for backend service monitoring
Scala SQL Python ZIO Cats Caliban
Interviewing now $100k-120k/yr
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ZY-7052 Staff

Staff Engineer

Portugal
10 years
Remote
Employee / Freelancer

Architected a real-time analytics platform utilizing Scala and Kotlin for processing millions of events per second. Engineered a cross-platform mobile application backend in Python and TypeScript, supporting over 10 million users. Led a refactoring project to transition a monolithic Java application to a microservices architecture.

  • Implemented a high-performance caching layer using Java and Redis.
  • Integrated a serverless solution using JavaScript for event-driven workflows.
  • Developed a machine learning pipeline in Python for predictive analytics.
Scala Kotlin Java JavaScript Python TypeScript
Available in 2 weeks $115k-130k/yr
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ST-6557 Lead

Scala Backend Engineer, Consultant

Sweden
10 years
Flexible
Employee / Freelancer

Designed and implemented distributed backend systems for cloud platforms using Scala and Java. Specialized in optimizing real-time data processing pipelines on AWS and GCP.

  • Built scalable cloud services on AWS and GCP
  • Optimized real-time data processing pipelines
  • Designed distributed backend systems
Scala Java Kotlin Python GCP AWS
Interviewing now Salary on request
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