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Backend 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
301+
Verified Candidates
13+
Avg. Years Experience
Top Skills
Scala Kubernetes Kafka 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

NP-9742 Senior Recently added

Senior Go Backend Developer

France
8 years
Remote
Employee / Freelancer

Designed and implemented robust backend services for large-scale e-commerce platforms. Developed API gateways to streamline service communication and enhance system reliability. Optimized PostgreSQL databases for high-volume transaction processing.

  • Deployed containerized applications using Kubernetes for seamless scalability.
  • Integrated third-party payment solutions via secure API protocols.
  • Automated CI/CD pipelines to accelerate deployment cycles.
Go Golang Backend Services APIs PostgreSQL Kubernetes
Available in 2 weeks Salary on request
Enquire
WK-9239 Principal Recently added

Senior Kotlin backend developer

Sweden
25 years
Hybrid
Employee / Freelancer

Designed and implemented large-scale microservices architectures using Scala for financial transaction systems, ensuring high availability and fault tolerance. Developed real-time data processing pipelines for a cloud-based analytics platform, optimizing for low latency and high throughput. Contributed to the development of reactive systems, enhancing system responsiveness and scalability in distributed environments.

  • Led migration of legacy Java systems to Kotlin microservices
  • Implemented event-driven architecture for a retail analytics platform
  • Optimized cloud resource allocation, reducing operational costs by 30%
  • Developed secure API gateways for fintech applications
Java Scala Kotlin Microservices Reactive architecture Cloud
Available in 1 month €100k-140k/yr
Enquire
#HIRED Lead Recently hired

Senior Scala Backend Engineer

Switzerland
7 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 ZIO gRPC Redis Kubernetes Terraform PostgreSQL Docker
Hired Salary: $XXX,XXX
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KW-3297 Principal

Backend Engineer

United States
22 years
Remote
Freelancer

Designed and implemented a distributed ledger system for financial transactions, optimizing consensus protocols for latency and throughput. Spearheaded the development of a real-time event processing pipeline, handling billions of messages per day with sub-second latency. Architected a microservices platform for a large-scale e-commerce application, focusing on scalability and fault tolerance.

  • Developed a custom RPC framework in Rust for microservices
  • Optimized JVM performance for high-frequency trading applications
  • Implemented a distributed caching system, reducing data retrieval time by 70%
  • Led migration of monolithic architecture to microservices, improving deployment speed
Java Rust Scala Distributed systems Microservices Event-driven architecture
Interviewing now $110-110/hr
Enquire
SB-3635 Lead

Sr. Backend Software Engineer

India
9 years
Flexible
Employee / Freelancer

Developed high-throughput distributed systems in Rust and Scala, focusing on real-time data processing. Built scalable microservices architecture leveraging Actix Web and Tokio for concurrent processing. Extensive experience in performance optimization for low-latency applications.

  • Designed scalable microservices with Actix Web
  • Optimized low-latency systems using Rust
  • Implemented real-time data processing pipelines
Scala Functional Programming Microservices RESTful APIs Kafka FS2
Interviewing now Salary on request
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KK-5038 Lead

Senior Backend Engineer

Netherlands
18 years
Flexible
Employee / Freelancer

Led the development of a distributed event-driven architecture using Akka for a high-frequency trading platform, optimizing latency to sub-millisecond levels. Developed and deployed a real-time analytics pipeline with Kafka, processing millions of events per second for a large-scale e-commerce platform. Spearheaded the migration of legacy systems to functional programming paradigms, significantly improving code maintainability and performance.

  • Architected microservices for scalable financial transaction systems
  • Implemented machine learning models for fraud detection in Scala
  • Designed RESTful APIs supporting thousands of concurrent users
  • Optimized JVM performance for large-scale data processing tasks
Scala Java Python Functional Programming Akka Kafka
Available in 2 weeks €70k-85k/yr
Enquire
SA-6380 Senior

Backend Software Engineer

Netherlands
10 years
Flexible
Employee

Developed scalable messaging systems using Kafka and ActiveMQ, optimizing data flow for real-time analytics. Architected microservices with ZIO to enhance fault tolerance and concurrency control in distributed environments.

  • Designed high-throughput data pipelines with Protobuf serialization.
  • Optimized PostgreSQL queries for complex reporting applications.
  • Implemented event-driven architectures for financial transaction processing.
Scala ZIO PostgreSQL ActiveMQ Kafka Protobuf
Available in 2 weeks Salary on request
Enquire
EM-9896 Lead

Independent Rust Engineer

France
15 years
Flexible
Employee

Engineered microservices architecture on AWS, utilizing Kubernetes for container orchestration and Seneca for microservices communication. Spearheaded the development of scalable backend systems using JavaScript and Angular.

  • Designed cloud-native solutions for high availability
  • Implemented CI/CD with Kubernetes and AWS
  • Automated infrastructure provisioning with Terraform
Java Scala React.js MongoDB PLSQL Microservices
Available in 3+ months Salary on request
Enquire
ST-6011 Principal

Senior Backend Engineer

Germany
13 years
Remote
Employee

Engineered backend systems with Go and Scala, focusing on real-time data processing. Developed scalable search solutions with Elasticsearch in distributed environments.

  • Engineered real-time data systems
  • Developed Elasticsearch search solutions
  • Optimized Go-based backend services
Go Node.js Elasticsearch Scala Python Kubernetes
Available in 3+ months Salary on request
Enquire
SQ-6135 Principal

Principal Software Engineer

Switzerland
19 years
Hybrid
Employee / Freelancer

Architected a distributed microservices platform for real-time financial data processing, optimizing latency and throughput across cloud environments. Spearheaded the development of a fault-tolerant messaging system, ensuring data consistency and availability in a multi-region setup. Led the integration of functional programming paradigms to enhance code maintainability and scalability in large-scale enterprise applications.

  • Designed scalable cloud infrastructure for high-volume transaction systems
  • Implemented consensus protocols for distributed ledger technologies
  • Optimized JVM performance for low-latency trading applications
  • Pioneered use of Scala in data stream processing pipelines
Functional Programming Distributed Systems Microservices Cloud Platforms Scala
Available in 2 months €200k-220k/yr
Enquire
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
GD-3884 Principal

Senior Software Engineer

Canada
12 years
Remote
Employee / Freelancer

Designed and implemented distributed systems for high-frequency trading platforms, focusing on low-latency data processing. Spearheaded the integration of domain-driven design principles into microservices architecture, enhancing scalability and maintainability. Developed a real-time analytics engine processing millions of events per second using functional programming techniques.

  • Optimized JVM performance for large-scale financial applications
  • Led migration from monolithic to microservices architecture
  • Implemented event sourcing for complex transaction processing
Scala Java Functional Programming OOP DDD TDD
Available in 2 weeks Salary on request
Enquire
JH-6372 Senior

Senior Software Engineer

Uzbekistan
3 years
Flexible
Employee

Built cloud-native applications using Java and Spring on AWS. Designed containerized applications with Kubernetes for scalable deployment. Developed systems with a focus on reliability and maintainability.

  • Built cloud-native applications on AWS
  • Designed containerized apps with Kubernetes
  • Focused on system reliability
Java Spring Scala JavaScript AWS Lambda CloudWatch
Interviewing now $80k-95k/yr
Enquire
SD-4049 Principal

Software Engineer

Germany
15 years
Remote
Employee

Specialized in building high-performance systems using Rust and Go for cloud-native applications. Developed low-latency network services with C and Python for real-time data processing. Optimized JVM-based applications in Scala for maximum throughput.

  • Implemented concurrency models to enhance system parallelism
  • Led adoption of Rust for memory-safe system programming
  • Architected distributed systems for large-scale data analytics
Linux systems Rust C Docker Podman k3s
Available in 3+ months €85k-120k/yr
Enquire
EL-6427 Principal

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

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