CrunchCode

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview

You will be the architect and guardian of a cloud ecosystem — responsible for designing, deploying, and scaling infrastructure on AWS and Kubernetes, with a heavy emphasis on Python automation and strategic cloud cost optimization (FinOps). The ideal candidate doesn't just build systems but obsesses over making them leaner, faster, and more cost-efficient.

Tech Stack: AWS · EKS · Kubernetes · Python · Terraform · Pulumi · GitHub Actions · Prometheus · Grafana · ELK

Requirements (Must-have):

• 4+ years as a DevOps Engineer in a production-grade cloud environment
• Deep AWS expertise — VPC, IAM, EKS, RDS, S3, Route53
• Hands-on Kubernetes at scale — Helm, Ingress controllers, cluster security
• Strong Python skills — Boto3 / AWS SDKs for complex automations and integrations
• Proven FinOps track record — measurable cloud cost reduction
• Infrastructure as Code — Terraform or Pulumi
  
  Responsibilities:
• Design, implement, and maintain scalable and highly available Kubernetes clusters (EKS) and AWS cloud services
• Develop automation tools and internal platforms using Python to streamline operations and CI/CD pipelines
• Lead cloud cost transparency and optimization strategy — Spot Instances, Reserved Instances, Rightsizing
• Manage and provision infrastructure using Terraform or Pulumi (IaC)
• Build and optimize CI/CD pipelines (GitHub Actions, GitLab CI, or Jenkins)
• Implement and manage observability stack — Prometheus, Grafana, ELK — ensuring 99.9% uptime
  
  Nice to Have:
• Experience with Pulumi alongside Terraform
• Multi-cloud or hybrid cloud environments
• Platform engineering / internal developer platform (IDP) experience
  
  Hiring Process: Intro call → Technical discussion → Offer
   

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview:

Hands-on role to establish, build, and continuously improve DevOps capabilities. You will take ownership of designing and maintaining scalable, secure, and automated cloud environments, collaborating closely with development, QA, and product teams. The role requires strong technical execution, a passion for automation, and a reliability-first mindset.

Tech Stack:

AWS · Terraform · CloudFormation · Docker · ECS / EKS · Kubernetes · Jenkins · GitHub Actions · Prometheus · Grafana · CloudWatch · Python · Bash

Requirements (Must-have):

- 3+ years of DevOps experience

- Hands-on AWS cloud experience

 -Proven Linux experience

- CI/CD tools — Jenkins, GitLab CI, GitHub Actions or similar

- Scripting and automation — Python, Bash

 -Docker and container orchestration — ECS, EKS, or Kubernetes

- Solid understanding of networking, security, and cloud best practices

- Fluent English — written and spoken

Responsibilities:

- Design, implement, and maintain CI/CD pipelines across all environments

- Build and maintain infrastructure as code using Terraform or CloudFormation

- Implement monitoring, alerting, and logging — CloudWatch, Prometheus, Grafana

- Define and enforce DevOps standards, policies, and operational best practices

- Maintain and optimize multi-account AWS infrastructure per customer / project

- Own security, scalability, and cost-efficiency of cloud environments

- Collaborate with R&D, QA, and Product on reliable deployments

- Participate in architecture and design discussions

Nice to Have:

- Hybrid or edge environments — AWS Greengrass, MQTT

- Multi-tenant / per-client infrastructure deployments

- AWS Organizations, SCPs, cost allocation tagging

- Serverless and event-driven workflows — Lambda, EventBridge

- Configuration management — Ansible, Puppet

- FinOps / cloud cost optimization

Hiring Process:

Intro call → Technical discussion → Offer

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview

Large-scale video streaming platform with DRM, OTT services, and distributed architecture. Backend development at the core — handling users, content, security, and communication across multiple systems. The work directly impacts how video content is securely delivered across web, mobile, and TV devices.
 

Tech Stack Java · Spring Boot · REST · Microservices · SQL / NoSQL · Distributed Systems · DRM · Linux

Requirements (Must-have):

• Strong hands-on Java backend development experience
• English B1+ (written and spoken)
• Spring / Spring Boot — production level
• REST APIs and microservices design and implementation
• SQL / NoSQL databases — design and optimization
• Distributed systems and data replication
• Linux-based environments
  
  Responsibilities:
• Design and develop backend services using Java as the primary language
• Build and maintain REST APIs and microservices
• Implement authentication, authorization, and access control logic
• Work with high-load distributed architecture and data replication
• Integrate with DRM systems and content protection services (Widevine, PlayReady, FairPlay)
• Implement content lifecycle logic — VOD, live streams, catch-up, user rights
• Ensure scalability, fault tolerance, and performance
• Set up monitoring, logging, and system health checks
• Collaborate with frontend and infrastructure teams
  
  Nice to Have:
• Experience with OTT / IPTV video streaming platforms
• Knowledge of DRM technologies — Widevine, PlayReady, FairPlay
• Understanding of HLS / MPEG-DASH streaming
• Experience with CDN / media delivery systems
• Kotlin (optional)
  
  Hiring Process: Intro call → Technical discussion → Offer

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview:

Post-merger AWS infrastructure consolidation: 13+ product lines, 65–70 AWS accounts across 3 separate AWS Organizations, serving 200k+ customers. The goal is to consolidate into a unified organization — migrating accounts, standardizing governance, unifying networking, increasing IaC coverage from 70% to 95%+, and establishing security baselines across the board.

Work spans: multi-org account migrations · networking redesign · IaC standardization (Terraform/Terragrunt) · CI/CD consolidation (GitHub Actions) · security remediation · self-service platform capabilities for product teams

Duration: Long-term (Q2–Q4 2026, extension likely)

Tech Stack:

AWS Organizations · Terraform · Terragrunt · GitHub Actions · Transit Gateway · ECS · EKS · IAM Identity Center · Security Hub · GuardDuty

Requirements (Must-have):

- 7+ years as a hands-on Senior AWS Cloud Engineer

- AWS multi-account architecture — Organizations, OUs, SCPs, governance, account migrations

- Advanced Terraform / Terragrunt — module design, testing, state management at scale

- AWS networking — VPC design, Transit Gateway, VPC peering, VPN, Route 53, DNS

- Container platforms — ECS/Fargate and/or EKS, must understand trade-offs

- IAM & SSO — IAM Identity Center, cross-account roles, least-privilege design

- Security & compliance — Security Hub, GuardDuty, AWS Config, centralized logging

- Operational excellence — monitoring, incident response, cost optimization

- GitHub Actions — composite actions, reusable workflows, OIDC

Nice to Have:

- AWS Solutions Architect — Professional

- AWS DevOps Engineer — Professional

- AWS Advanced Networking — Specialty

- SysOps Administrator / Cloud Operations Engineer — Associate

Hiring Process:

Intro call → Technical discussion → Offer

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview:

Building an internal wallet technology platform for custodial operations across Bitcoin, Ethereum, Solana, and TRON. The goal is to replace a fragmented setup of multiple vendor-specific tools with a unified, client-owned stack — consolidating policy engines, wallet registries, and governance frameworks into a single system.

Platform scope: policy and governance · wallet management · transaction construction and execution · signing coordination

Duration: Long-term (8+ months)

Tech Stack:

Java · Bitcoin · Ethereum · Solana · TRON · Wallet Infrastructure

Requirements (Must-have):

- Strong hands-on Java development experience in production environments

- Proven experience with blockchain protocols — BTC, ETH, Solana, TRON

- Deep understanding of wallet infrastructure: key management, signing flows, transaction lifecycle

- Experience building or integrating custodial / non-custodial wallet systems

- Solid understanding of cryptographic primitives (signing schemes, key derivation)

- EU timezone availability, full-time commitment

Responsibilities:

- Design and develop a unified custodial wallet platform from the ground up

- Build and maintain wallet management, transaction construction, and signing coordination modules

- Implement policy and governance layers for multi-chain operations

- Integrate blockchain protocols: Bitcoin, Ethereum, Solana, TRON

- Ensure security, scalability, and reliability of the custody infrastructure

- Consolidate existing vendor-specific tools into a single client-owned stack

Nice to Have:

- Experience with HSM or MPC-based signing coordination

- Familiarity with multi-chain wallet registries

- Prior work on fintech or crypto custody platforms

Hiring Process:

Intro call → Technical discussion → Offer

Start: ASAP

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gamblng / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview 
High-agency backend role building reliable, scalable systems that support real-time, high-throughput workloads — telephony, AI inference, and third-party integrations. The engineer will own and evolve backend services on an AWS container stack (ECS + Docker) while actively contributing to a migration toward Kubernetes.

Тech Stack: Python, TypeScript, Node.js, AWS (ECS), Docker, Kubernetes, REST APIs, LLM/Speech APIs, CI/CD, Microservices

Requirements (Must-have):

• Strong hands-on experience with Python as primary backend language
• Solid TypeScript / Node.js experience
• Experience with AWS (ECS), Docker, and container-based infrastructure
• Experience with microservices architecture and REST APIs
• Hands-on experience with AI integrations (LLM and/or speech APIs)
• Familiarity with Kubernetes or active interest in migration to K8s
• CI/CD practices
• High agency — ability to own systems independently
• English B2+
  
  Responsibilities:
• Own and evolve backend services end-to-end
• Build scalable, reliable systems for real-time and high-throughput workloads (telephony + AI inference + integrations)
• Work primarily in Python with growing contribution in TypeScript (Node.js)
• Maintain and scale AWS ECS + Docker infrastructure
• Contribute to Kubernetes migration
• Integrate LLM and speech APIs into production systems
• Design and maintain REST APIs and microservices architecture
• Implement and improve CI/CD pipelines
  
  Nice to Have:
• Experience with telephony systems or real-time audio pipelines
• Experience leading or contributing to cloud migration projects
• Background in AI-driven or voice-based products
  
  Hiring Process :
• Intro call 
• Technical discussion 

• Offer

  Start: ASAP

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gamblng / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Long Term (9+ month)

Need for some overlap with Australia timezone (only for meetings)

Project Overview

Our client is building data- and AI-driven solutions in a cloud-first environment, with a strong focus on GCP, BigQuery, and large-scale data workflows. The current work is centered around exploring and defining new solution directions, especially in voice-related use cases, where architecture decisions must balance feasibility, scalability, and production readiness.

The environment is highly collaborative and cross-functional, bringing together technical leadership, data scientists, and engineering teams to shape complex solutions from early discovery through implementation.
 

Tech Stack:

Python

GCP

BigQuery

SQL / data modeling

Large-scale data systems

LLM / agentic solution design

Streaming systems (nice to have)

Voice / call-agent environments (strong plus)

Requirements (Must-have):

- Strong experience with GCP and cloud-native architecture;

- Strong Python background;

- Deep understanding of big data, data modeling, and analytical storage systems;

- Experience designing scalable, production-oriented architectures;

- Ability to operate in ambiguous environments and translate ideas into solution options;

- Strong communication and documentation skills;

- Ability to explain trade-offs clearly and collaborate across technical streams.

Responsibilities:

- Define architecture options for new data and AI solutions

- Evaluate technical feasibility of proposed voice-agentic systems

- Design production-grade solution approaches on GCP, especially around BigQuery

- Work with large, unstructured datasets and define storage / transformation strategies

- Support solution design involving LLMs and agentic workflows

- Prepare architecture documentation and technical recommendations

- Help shape proof-of-concept direction and technical scope

- Collaborate closely with technical leadership, data scientists, and engineering teams

Nice to Have:

- Experience with LLM / agentic system design

- Experience with voice, speech, or call-agent platforms

- Experience with streaming architectures

- Experience working closely with data scientists on early-stage solution design

Hiring Process:

- Intro call

- Technical discussion (focused on real experience)

- Offer

Start: ASAP
 

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gamblng / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview
Enterprise-grade data engineering role within a Pan-Baltic banking environment. The engineer will work on large-scale data platforms, building and maintaining production-ready pipelines and modern data lakehouse architectures across the organization.

Tech Stack
Python, Apache Spark, AWS (EMR, Glue, Athena, S3), SQL, Data Lakehouse, ETL/ELT

Requirements (Must-have):
- Strong hands-on enterprise data engineering experience
- Advanced SQL skills and solid understanding of analytical and dimensional data modeling
- Proven experience with Data Lakehouse / modern data platform concepts (cloud object storage, open table formats, distributed processing)
- Strong hands-on experience with AWS data services: EMR, Glue, Athena, S3-based data lakes
- Strong hands-on experience with Apache Spark for large-scale data processing
- Strong Python skills for ETL development, data processing, and automation
- Very strong analytical, problem-solving, and system-level thinking skills
- Fluent English B2+ — required for Pan-Baltic communication (spoken and written)

Responsibilities:
- Design, implement, and maintain robust production data pipelines
- Build and optimize Data Lakehouse and modern data platform solutions
- Work with AWS data services across the full data engineering stack
- Process large-scale data using Apache Spark
- Develop ETL workflows and automation scripts in Python
- Apply advanced SQL and dimensional/analytical data modeling
- Contribute to system-level thinking and data architecture decisions

Nice to Have:
- Experience in banking or financial services
- Familiarity with data governance and compliance practices

Hiring Process:
Intro call
Technical discussion
Offer
Start: ASAP

Required: 
Polish Speaking (тестувальники можуть бути і з України, але щоб могли трохи говорити польською, основна мова спілкування - англійська (Upper Intermediate))
4 months+

Project Overview
Ability to work in a startup atmosphere = need for an independent person who can proactively obtain the necessary information.

Responsibilities
An automation expert is not required. If someone is a capable QA with some exposure to automation and wants to work on automated tests, we can consider them as well.

Requirements (Must-have)
Experience with Jest
Experience with REST API

Nice to Have
Experience with Maestro

Hiring Process
Intro call
Technical discussion (focused on real experience)
Offer
Start: ASAP

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview:
New product development integrated into an existing client solution. The team builds cloud-based and AI-driven features using modern full-stack and generative AI tooling. Long-term project with no fixed end date. The Tech Lead role is hands-on development first — team management is secondary.

Duration: Long-term (~2 years+)

Tech Stack:
Python, Jupyter Notebooks, AWS, React, Node.js, Cursor, Claude Code, Windsurf, CI/CD

Requirements (Must-have):
- Strong Python experience in a data or engineering context
- English B2+
- Hands-on experience with Jupyter Notebooks and cloud-based analysis tools
- Proven use of Generative AI coding tools (3–6 months minimum with Claude Code or similar)
- Tech Lead or senior-level experience with hands-on development focus
- Experience with AWS and cloud-based development

Responsibilities:
- Lead technical direction while remaining hands-on in day-to-day development
- Build and maintain data analysis workflows using Python and Jupyter Notebooks
- Develop cloud-based analytical solutions and data pipelines
- Contribute to full-stack development (React / Node.js) where needed
- Leverage Generative AI tools (Cursor, Claude Code, Windsurf) daily
- Collaborate closely with 2 Full-Stack Developers within a tight-knit team

Nice to Have:
- Full-stack development background (React + Node.js)
- Data Science or Data Analysis background
- Experience building agentic or LLM-integrated systems

Hiring Process:
- Intro call
- Technical discussion
- Offer
Start: ASAP (flexible)

Senior Java Engineer (Java + VoIP/WebRTC)

Required:

Senior Java Engineer, English B2+

Full-time, EU/Eastern Europe working hours

Location: Ukraine, Armenia, Poland, Eastern Europe

Duration: Long-term

Project Overview

A real-time communication platform requiring high-performance backend services, low-latency architecture, and deep integration with VoIP/WebRTC infrastructure and mobile applications.

Responsibilities

Design and develop high-performance backend services using Java and Spring Boot

Build and maintain real-time communication systems (WebRTC, VoIP, SIP)

Integrate backend systems with mobile applications (iOS & Android)

Work with streaming, signaling, and media servers

Ensure low-latency, high-availability architecture

Collaborate with cross-functional teams (mobile, frontend, DevOps)

Optimize system performance, scalability, and reliability

Requirements (Must-have)

5+ years of experience with Java (Spring / Spring Boot)

Strong experience with WebRTC protocols and architecture

Strong experience with VoIP / SIP / RTP / signaling servers

Experience integrating with iOS and Android applications

Solid understanding of real-time data streaming

Solid understanding of distributed systems and microservices architecture

Experience with cloud platforms (AWS / GCP / Azure)

Familiarity with Kafka / WebSockets / REST APIs

Nice to Have

Experience with Twilio, Agora, Vonage or similar RTC platforms

Experience with media servers: Kurento, Janus, FreeSWITCH, Asterisk

Knowledge of AI/voice processing / speech analytics

Background in telecom or communication products

Tech Stack

Java, Spring Boot, WebRTC, VoIP/SIP/RTP, Kafka, WebSockets, REST, AWS/GCP/Azure, Microservices

Hiring Process

Intro call

Technical discussion

Offer

Start: ASAP

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview
Product at the intersection of AI technologies and analytics. Diverse tasks spanning AI module development, BI tooling, integration architecture, and data workflows. The client looks for proactive engineers ready to take initiative and grow within the team.

Tech Stack
Ruby on Rails, React, AI dev tools (Cursor, Claude, Copilot), BI/Analytics tooling

Requirements (Must-have):
- Solid production experience with Ruby (on Rails)
- Solid production experience with React (hooks from scratch, comfortable without IDE)
- Proactive, self-driven approach
- AI-native workflow: daily use of Cursor, Claude, Copilot or similar tools
- English B2+ for direct client communication
- Full-time, long-term availability from EU or Ukraine

Responsibilities:
- Develop and maintain full-stack features across Ruby backend and React frontend
- Contribute to AI modules, BI tools, and integration systems
- Work with data pipelines and analytical components
- Collaborate closely with the Lead and cross-functional team
- Communicate directly with the client in English

Nice to Have:
- Experience with BI or analytics tools
- Familiarity with AI/LLM-integrated systems
- Experience in async remote teams

Hiring Process:
- Intro call
- Technical discussion
- Offer
Start: ASAP
Duration: Long-term

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview:
Product at the intersection of AI technologies and analytics. Diverse tasks spanning AI module development, BI tooling, integration architecture, and data workflows. The client values proactive specialists who can take ownership and help structure engineering processes.

Tech Stack
Ruby on Rails, React, AI dev tools (Cursor, Claude, Copilot), BI/Analytics tooling

Requirements (Must-have):
- Strong production experience with Ruby (on Rails)
- Strong production experience with React (hooks from scratch, comfortable without IDE)
- Demonstrated leadership and proactive approach to structuring processes
- AI-native workflow: daily use of Cursor, Claude, Copilot or similar tools
- English B2+ for direct client communication
- Full-time, long-term availability from EU or Ukraine

Responsibilities:
- Lead full-stack development across Ruby backend and React frontend
- Drive architecture decisions and contribute to engineering process structure
- Develop and maintain AI modules and BI tools
- Build and own integration systems and data workflows
- Mentor and support middle-level engineers
- Communicate directly with the client in English on a daily basis

Nice to Have:
- Experience with BI tools and analytics platforms
- Background in AI/LLM-integrated products
- Experience in async remote teams

Hiring Process:
- Intro call
- Technical discussion
- Offer
Start: ASAP
Duration: Long-term

CrunchCode — міжнародна сервісна ІТ-компанія з досвідом близько 7 років у розробці вебсервісів і вебзастосунків. Ми працюємо у форматах staff augmentation (outstaff) та outsourcing і підключаємо спеціалістів до проєктів клієнтів у довгостроковій моделі співпраці.

Ми працюємо переважно з проєктами в доменах логістики (включно з last mile),e-commerce, fintech та банкінгу, а також enterprise-рішеннями.
Для нас важливо, щоб проєкт був “чистим” і зрозумілим з точки зору етики та цінності для користувачів.

Ми принципово не беремо проєкти, пов’язані з:
● gambling / гемблінгом,
● adult-контентом та порнографією,
● шахрайством або будь-якою розробкою, що спрямована на обман чи маніпуляції.

What We Offer:
● Fully remote work
● Long-term, stable project
● High level of autonomy and trust
● Minimal bureaucracy
● Direct impact on business-critical logistics systems
● Long-term engagement, not a short-term contract.

Project Overview
A real-time communication platform requiring high-performance backend services, low-latency architecture, and deep integration with VoIP/WebRTC infrastructure and mobile applications.

Tech Stack
Java, Spring Boot, WebRTC, VoIP/SIP/RTP, Kafka, WebSockets, REST, AWS/GCP/Azure, Microservices

Requirements (Must-have):
- 5+ years of experience with Java (Spring / Spring Boot)
- Strong experience with WebRTC protocols and architecture
- Strong experience with VoIP / SIP / RTP / signaling servers
- Experience integrating with iOS and Android applications
- Solid understanding of real-time data streaming
- Solid understanding of distributed systems and microservices architecture
- Experience with cloud platforms (AWS / GCP / Azure)
- Familiarity with Kafka / WebSockets / REST APIs

Responsibilities:
- Design and develop high-performance backend services using Java and Spring Boot
- Build and maintain real-time communication systems (WebRTC, VoIP, SIP)
- Integrate backend systems with mobile applications (iOS & Android)
- Work with streaming, signaling, and media servers
- Ensure low-latency, high-availability architecture
- Collaborate with cross-functional teams (mobile, frontend, DevOps)
- Optimize system performance, scalability, and reliability

Nice to Have:
- Experience with Twilio, Agora, Vonage or similar RTC platforms
- Experience with media servers: Kurento, Janus, FreeSWITCH, Asterisk
- Knowledge of AI/voice processing / speech analytics
- Background in telecom or communication products

Hiring Process:
- Intro call
- Technical discussion
- Offer
Start: ASAP

Required:

Senior Java Backend Engineer, English B2+

Full-time, EU working hours

Location: EU / Ukraine

Duration: Long-term (9+ month)

Responsibilities

Design and develop scalable backend services and microservices in Java/Spring Boot

Build and maintain blockchain integrations across multiple networks (Bitcoin, Ethereum, Solana, TRON)

Develop and support custodial wallet systems

Ensure reliability, security, and performance of blockchain-related infrastructure

Collaborate with cross-functional teams on architecture and technical decisions

Participate in code reviews and knowledge sharing

Requirements (Must-have)

Strong hands-on experience with Java and Spring Boot

Proven experience building microservices architectures

Hands-on experience with blockchain integrations (Bitcoin, Ethereum, Solana, TRON)

Experience with custodial wallet systems

English B2+

Nice to Have

Experience with additional blockchain protocols or Web3 ecosystems

Familiarity with security best practices in crypto/fintech environments

Tech Stack

Java, Spring Boot, Microservices, Bitcoin, Ethereum, Solana, TRON, Custodial Wallet Systems

Hiring Process

Intro call

Technical discussion

Offer

Start: ASAP