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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
330+
Verified Candidates
14+
Avg. Years Experience
Top Skills
Scala Kubernetes Docker Python
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

NZ-2211 Lead Recently added

Scala Engineer

United Kingdom
15 years
Flexible
Employee

Designed and implemented a high-frequency trading platform handling millions of transactions daily, optimizing for low-latency execution. Developed a distributed data processing system using Scala Cats for functional programming paradigms to streamline financial data analysis. Led the architecture of a real-time recommendation engine, integrating machine learning models for personalized user experiences.

  • Built a microservices architecture with Spring Boot and Spring Batch
  • Integrated Angular-based front-end with Scala back-end systems
  • Optimized JVM performance for large-scale data processing applications
  • Enhanced concurrency management in multi-threaded environments
Scala Scala Cats Java Spring Boot Spring Batch Angular
Interviewing now Salary on request
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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
Enquire
#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
Enquire
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 €95-105/hr
Enquire
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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AH-8221 Lead

Senior Scala Developer

Poland
8 years
Remote
Employee

Architected a distributed ledger system using Akka and ZIO, ensuring high availability and fault tolerance. Led a team in developing a scalable API gateway leveraging Tapir and Cats Effect for a fintech application.

  • Optimized database interactions with Doobie
  • Designed a reactive event-driven system
  • Integrated third-party services using Scala
Scala ZIO Akka Cats Effect Tapir Doobie
Interviewing now €72k-85k/yr
Enquire
WW-6611 Lead

Ingeniero de Software Senior

Spain
23 years
Flexible
Employee

Led development of high-performance backend services for e-commerce platforms, focusing on scalability and reliability. Engineered data-intensive applications with SQL Server, optimizing database interactions for complex queries.

  • Built RESTful APIs for large-scale web applications
  • Enhanced legacy systems with modern programming paradigms
  • Implemented cross-platform solutions using C# and Rust
Scala Java Python Rust C# SQL Server
Interviewing now €55k-65k/yr
Enquire
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
€100k-120k/yr
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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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SV-4845 Principal

Founder & Principal Engineer

United States
30 years
Hybrid
Employee

Engineered high-performance trading systems with sub-millisecond latency requirements. Developed distributed storage solutions for data-intensive applications, leveraging Rust and C++ for optimal performance. Pioneered advancements in real-time analytics platforms within the financial sector.

  • Architected cross-platform development tools in Scala and Java.
  • Built scalable microservices architecture for fintech applications.
  • Led development of a custom language runtime in Ruby and Python.
Rust C++ Scala Java Ruby Python
Interviewing now $150k-250k/yr
Enquire
CG-3860 Lead

Technical Lead

Canada
8 years

Integrated advanced language models into customer support systems using Scala and Python. Spearheaded development of a recommendation engine utilizing vector databases for enhanced data retrieval. Developed scalable infrastructure for processing large datasets with LLM technologies.

  • Implemented LangChain for efficient multi-language processing.
  • Optimized Rust-based modules for real-time data analysis.
  • Designed a fault-tolerant distributed system for AI workflows.
Scala Python Rust LLM integration LangChain vector database
Salary on request
Enquire
CB-2510 Lead

Senior Scala engineer

Czech Republic
13 years
Remote
Employee

Architected a robust event-driven architecture for large-scale IoT data ingestion. Enhanced a supply chain management platform with Scala and Kafka for real-time analytics. Developed a high-throughput messaging system using Typelevel libraries.

  • Implemented PostgreSQL optimizations for high-volume data storage
  • Utilized Go for microservices orchestration
  • Contributed to open-source Scala libraries
  • Configured Linux servers for enhanced application performance
Scala Typelevel PostgreSQL Kafka Linux Go
Available in 2 weeks €70k-85k/yr
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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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