Jobs Backend

.NET Engineer (Microsoft Teams / Voice Platform)

We are looking for a .NET Engineer to join a product team working on a voice and communication platform with a strong focus on Microsoft Teams integrations.

The product handles voice communication workflows, calls, meetings, recordings, and communication data. In this role, you’ll be responsible for building and improving backend services that connect the platform with the Microsoft Teams ecosystem.

Responsibilities

• Develop backend functionality using C# / .NET and ASP.NET Core
• Build and support integrations with Microsoft Teams
• Work with Microsoft Graph API and Teams communication APIs
• Implement solutions for calls, meetings, recordings, and related communication data
• Develop and maintain REST APIs and integration services
• Diagnose and resolve production issues across Teams and voice-related functionality
• Improve system stability, performance, and scalability

• Participate in backend architecture and technical decision-making

   

Requirements

• 3+ years of professional C# / .NET development experience
• Strong background in backend engineering and ASP.NET Core
• Hands-on commercial experience with Microsoft Teams integrations
• Experience working with Microsoft Graph API
• Practical knowledge of APIs related to Teams calls, meetings, recordings, or communications
• Experience integrating external systems and third-party APIs
• Good understanding of SQL, databases, and backend design principles
• Ability to independently investigate and solve technical issues

• English level: B2 or higher

   

Will be a plus

• Experience with Microsoft Graph Communications APIs
• Teams compliance recording or other call-recording solutions
• Background in VoIP, telephony, voice platforms, or contact center solutions
• Experience with real-time audio/media processing
• Knowledge of WebRTC, SIP, RTP
• Experience with SignalR or WebSockets

• Experience with Azure

   

Who we’re looking for

We’re looking for a backend-focused engineer who already has practical Microsoft Teams integration experience and is comfortable working with complex communication APIs.

The ideal candidate understands not only .NET development, but also how calls, meetings, recordings, and real-time communication integrations behave in production.

What We Offer

• Long-term product project
• Transparent compensation
• Paid vacation and sick leave
• Learning and professional development support
• High-quality equipment
• Paid office lunches
• Anniversary gifts and baby bonus

Domain: Banking & Finance
Experience: 8+ years
Project Duration: October 1, 2026 – March 30, 2027
Format: Hybrid
Location: Wrocław, Poland

About the Project

We are looking for an experienced Senior .NET Application Developer to join a dynamic technology team based in Wrocław.

The role focuses on designing, developing, and maintaining scalable enterprise-level applications using .NET and Microsoft Azure. You will work closely with cross-functional teams in an Agile environment and contribute to technical solutions and continuous improvement of the development process.

Responsibilities

• Design, develop, and maintain scalable enterprise applications using C# and .NET
• Build and integrate RESTful APIs and microservices
• Develop cloud-native solutions using Microsoft Azure
• Contribute to application architecture and technical design decisions
• Work with Azure DevOps, CI/CD pipelines, and source control systems
• Ensure application quality through development best practices, testing, and code reviews
• Troubleshoot and resolve complex technical issues
• Collaborate with cross-functional teams in an Agile/Scrum environment
• Contribute to continuous improvement of development processes and solutions

Requirements

• 8+ years of professional software development experience
• Strong proficiency in C# and .NET, including .NET Framework, .NET Core, and .NET 8
• Solid hands-on experience with Microsoft Azure and cloud-native application development
• Practical experience designing and developing RESTful APIs and microservices
• Strong understanding of object-oriented programming, software design principles, and development best practices
• Experience with Azure DevOps, CI/CD pipelines, and Git or similar version control systems
• Good knowledge of relational databases, particularly Microsoft SQL Server
• Previous experience working in Agile/Scrum environments
• Strong analytical, troubleshooting, and problem-solving skills
• Excellent written and spoken English

Nice to Have

• Microsoft Azure certifications
• Experience with Docker, Kubernetes, or other containerization technologies
• Knowledge of event-driven architectures and Azure messaging services
• Exposure to modern frontend frameworks and technologies

Tech Stack

• C#
• .NET / .NET Core / .NET 8
• Microsoft Azure
• RESTful APIs
• Microservices
• Azure DevOps
• CI/CD
• Git
• Microsoft SQL Server
• Agile / Scrum

Preferred Technologies

• Docker
• Kubernetes
• Azure Messaging

We're looking for a mature, Senior/Lead PHP Engineer with deep Laravel expertise and hands-on experience building or integrating agentic AI systems. You'll take ownership of complex backend features end-to-end, mentor other engineers, and help shape how AI-driven automation and agents fit into our product and internal workflows.

About the client:

Our client is a leading online car marketplace group operating across Europe and North America, bringing together market-leading brands to shape the future of our industry by combining the best of both regions.

What You'll Do:

• Design, build, and maintain robust backend services and APIs using PHP and Laravel
• Own features from technical design through deployment and monitoring
• Integrate and orchestrate agentic AI workflows (e.g., LLM-based agents, tool-calling pipelines, autonomous task runners) into existing products or internal tooling
• Improve system performance, reliability, and security across the stack
• Stay current with the PHP/Laravel ecosystem and emerging agentic AI tools and patterns

What You Need to Succeed:

• 6+ years of professional PHP development experience
• 4+ years building applications with Laravel (or comparable modern PHP framework experience with strong Laravel proficiency)
• Solid database skills (MySQL/PostgreSQL), including query optimization and schema design
• Familiarity with containerization (Docker) and cloud deployment (AWS, GCP, or similar)
• Strong communication skills and the judgment to work independently on ambiguous problems
• Hands-on GenAI experience — you've built with LLM APIs, tool/function calling, retrieval, agents, or agent frameworks and put them into real workflows.
• Modern AI coding tools (e.g., Claude Code, Codex) are part of how you work day to day.
• Strong communication and collaboration skills — you work well in a team, share your opinions clearly, and can move a topic forward with people across functions.
• Solid engineering fundamentals: testing, debugging, code quality, and getting things production-ready.
• English - at least Upper Intermediate+
• Work in EDT (Toronto) time zone

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

Overview 

Come join us as we scale our retail and commerce loyalty platform! PAR Retail is looking for a Senior NodeJS engineer on its expanding product engineering team as we build and grow our Open Commerce enterprise software-as-a-service platform. 

Open Commerce is a technology suite that enables marketing professionals in the fuel & convenience industry to create real-time, hyper-personalized offers and customer interactions across a variety of channels (mobile, web, SMS, and in-person) to drive customer behavior toward a desired goal. 

Our technology bridges financial payment providers, retail fuel pump technology, and customer experience by wrapping low-level standards-compliant integrations with powerful software abstractions on an ultra-modern software platform. Our platform services and applications are built using a broad swath of technologies (Typescript, NodeJS, Ruby, React, and others), interconnected via GraphQL and RabbitMQ, and run in AWS using Terraform, Helm and Kubernetes (via EKS). 

PAR Retail has its headquarters in Philadelphia, Pennsylvania (USA) and leverages a diverse distributed product engineering and operations team across the United States and Ukraine. PAR Retail offers highly competitive compensation and benefits, as well as an engineering-friendly and product-centric culture. On PAR Retail’s Open Commerce team, we embrace a deeply collaborative software product development process where engineering, design, and product collaborate to shape and ship new functionality. 

Successful candidates will enjoy PAR Retail’s friendly and flexible culture, and embrace our relentless drive to excellence and goal of providing the #1 retail marketing platform in the fuel & convenience industry and beyond. 

Responsibilities 

• Working with the team, design and implement new functionality based on product objectives and requirements. 
• Work with the broader product engineering team to plan and coordinate feature and functionality improvements, as well as resolve bugs and execute technical enhancements, that cross-cut large parts of our platform. 
• Work to continually learn, improve technology skills, expand knowledge of the Open Commerce platform technologies, and gain increasing versatility across the breadth of our platform systems. 
• Expand APIs and business logic, and as needed write or revise customer-facing API documentation. 
• Work with our infrastructure team to enable and enhance highly-available, performant, and well-instrumented backend applications and services that run in our customer environments at substantial scale. 

• Support operations and infrastructure teams for issue resolution on relevant Open Commerce applications or services running in production environments. 

   

Qualifications 

• Practical experience building systems in Node.js 
• At least 5 years industry experience or equivalent 
• Experience building and maintaining backend APIs, including design, implementation, evolution, and maintenance 
• Familiarity with TypeScript, or similar modern strongly-typed language 
• Proficiency using both relational and non-relational database technologies 
• Strong understanding and familiarity with CI/CD pipelines and automated testing 
• Basic knowledge Docker and Kubernetes 
• Familiarity with OAuth and JWT 
• Some experience with front-end JS technologies, esp. React or Angular 
• An ability to work in service-based architectures 
• Highly independent and able to effectively self-organize and prioritize work 
• The ability to write clean code, and the discipline to write effective automated unit tests in order to deliver high-quality system improvements 
• An ability to effectively break down larger bodies of work for delivery as a series of small, self-contained changes to the system 
• Excellent spoken and written communication skills 

• BS/MS degree in Computer Science, Engineering, or equivalent years of professional working experience 

   

Bonus Points 

• Experience with Nest.js and/or GraphQL 
• Experience with Ruby on Rails 
• Experience with AWS 
• Experience working in distributed teams 

• Experience in the retail and/or fuel & convenience industries 

   

PAR Retail Offers:

- Long-term employment;

- Competitive compensation with regular performance-based salary and career development reviews;

- Paid vacations and sick leaves;

- Flexible working hours;

- A unique and friendly environment where everyone can explore and learn new technologies.

We’re looking for a Senior Microsoft Dynamics 365 CE Developer to join a project focused on extending and maintaining an existing, heavily customized Dynamics 365 Customer Engagement solution.

What you’ll do

• Develop and maintain customizations for Dynamics 365 CE / CRM.
• Work with C#/.NET, plugins, Custom APIs and Dataverse SDK.
• Design and optimize Dataverse data models.
• Develop JavaScript/TypeScript form scripts and PCF controls.
• Work with Model-driven Apps and Power Platform.
• Build and maintain integrations with Azure services and external systems.
• Troubleshoot production issues and optimize performance.
• Manage solutions and ALM across Dev/Test/Prod environments.
• Perform data migrations and work with security configurations.
• Make technical decisions and independently estimate and break down tasks.

Requirements

• 5+ years of experience with Dynamics 365 CE / CRM.
• Strong C# / .NET experience.
• Solid knowledge of Microsoft Dataverse.
• Experience with JavaScript / TypeScript.
• Experience with PCF, React.
• Strong understanding of Dynamics 365 Model-driven Apps.
• Experience with Power Automate.
• Knowledge of Dynamics 365 security model.
• Experience with REST / Web API, OData, FetchXML.
• Experience with Azure Service Bus, Webhooks, Azure Functions.
• Knowledge of Entra ID / Azure AD, OAuth 2.0.
• Experience with performance optimization and troubleshooting.

• Experience with data migration tools such as Configuration. Migration Tool, KingswaySoft / SSIS or Data Import Wizard.

   

Nice to have

• Power Pages / Portals.
• Git, Azure DevOps / GitHub Actions, Power Platform Build Tools, pac CLI.
• Azure Functions, Logic Apps, Key Vault, Application Insights, API Management.
• SQL Server, Azure Synapse Link / Microsoft Fabric.
• Dynamics 365 Sales, Customer Service or Field Service.
• Dual-write / Dynamics 365 F&O integrations.
• FakeXrmEasy, EasyRepro or Playwright.
• SSRS / FetchXML reporting, Power BI.

We Offer:

• Remote work and flexible working hours.
• Legal support.
• Paid sick leaves.
• Paid vacations.
• Medical insurance. 
• Free English classes.

Project description

We are building the platform, which supports various information gathering and processing across the bank. The PMC application, Price Master Central (PMC) is a global reference data management application - responsible for sourcing securities/Pricing data from market vendors and internal sources and providing it to downstream clients after applying client specific rules.

Responsibilities

Manage a team

Intensive communication with project stakeholders and other teams

Evaluate and adopt new development tools, libraries and approaches to improve delivery quality

Continuous quality improvement (code reviews, fixing Sonar issues, unit/integration/E2E test coverage)

Integrate our components with different internal and external client's systems

Configure, monitor, and troubleshoot Application servers

Monitor applications, processes, scheduled jobs, collect different types of logs and metrics

Setup and improve CI/CD

Automate routine with scripting languages

Write all types of tests: unit, integration, end-to-end

Design distributed applications

Skills

Must have

Technically strong energetic individual, who can bring innovation to the group

Team lead experience from 3 years, IT experience from 7 years

Java (Core, JDBC, MT, Collections, I/O), Spring Boot

SQL.PL-SQL on Oracle DB

Container platform based on Kubernetes

REST web services, Kafka, Redis

Unix Commands and shell scripting.

Familiarity with standard data structures and algorithms.

Experience using the following tools

JIRA, Harness/uDeploy, SonarQube, TeamCity, Artifactory, Git (GHE & Bitbucket)

Logical thinking, strong analytical and problem-solving skills; innovate and solutions oriented

Effective time management skills to manage multiple priorities with flexibility on time zones and timelines

Excellent verbal and written communication skills

Bachelor's degree in computer science or equivalent work experience

Nice to have

Master's degree in computer science or equivalent work experience

Experience working with the Scrum methodology

Experience working with a NoSQL database

Experience designing and implementing microservices

Financial services technology experience preferably in reference data

Languages

English: C1 Advanced

Senior Backend Engineer (Go)

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

Our client operates a cloud-based platform dedicated to corporate ground transportation management, addressing a multi-billion-dollar market. The solution aggregates multiple transportation providers—such as corporate fleets, ride-hailing services, taxi operators, and limousine networks—into a unified system that helps businesses streamline operations and reduce spend. It serves a significant share of the largest companies worldwide and handles high volumes of transactions and data across diverse geographies. The platform’s core challenges include integrating heterogeneous external services, maintaining reliability under high-load conditions, implementing advanced business logic for scheduling and pooling, and providing accurate cost control and reporting. Strong backend engineering is critical to scaling global coverage, ensuring performance, and delivering a seamless user experience.

About the Role:

You will join a cross-functional development team responsible for core backend services that directly impact end users. The role offers full ownership of feature delivery—from reviewing product requirements and defining technical designs alongside architects and product managers, through to coding, testing, deployment, and monitoring in production. You will serve as first-line support for your services, proactively identify and address reliability and performance issues, and collaborate with other teams to ensure end-to-end system integrity. This position demands technical leadership, a hands-on approach to system architecture, and the ability to influence both engineering and product decisions. You will work remotely with periodic team gatherings and receive the tools and environment needed to deliver tangible business impact in a fast-paced, agile setting.

Key Responsibilities:

• Lead end-to-end development of backend microservices, including implementation, deployment, and production monitoring.

• Translate product requirements into scalable technical designs, data models, and RESTful APIs.

• Integrate with external transportation providers and internal systems to enable reliable, real-time workflows.

• Analyze and optimize system performance and database queries under high-load scenarios.

• Propose and implement architectural improvements to enhance resilience, scalability, and maintainability.

• Maintain and refactor existing services to improve code quality, test coverage, and observability.

• Collaborate with cross-functional teams and mentor peers on best practices in coding, testing, and operations.

• Participate in agile ceremonies, including backlog grooming and sprint planning, to align deliverables with business priorities.

Required Competence and Skills:

• 5+ years of backend software development experience in Golang (willingness to work with Ruby). 

• Proven experience designing and implementing data-driven applications using relational databases (e.g., PostgreSQL) and NoSQL stores (e.g., Redis).

• Solid understanding of RESTful API design principles and the HTTP protocol.

• Hands-on experience with Agile/Scrum methodologies and iterative delivery.

• Proficiency in writing unit tests and applying automated testing practices.

• Strong English communication skills, both verbal and written.

• Ability to understand complex business domains and translate needs into optimal technical solutions.

• Deep understanding of system architecture, high-load applications, and concurrency principles.

Nice to Have:

• Expertise in performance tuning of relational databases.

• Familiarity with gRPC and Protocol Buffers.

• Prior work on high-load, distributed systems.

• Background in building concurrent applications.

Why Us:

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

SCIMUS is a software development outsourcing company with 10+ years of experience, helping businesses scale their engineering capacity across industries such as Healthcare, eCommerce, AdTech, and more. We're proud of our delivery track record: 95% of projects delivered on time, a 92% Net Promoter Score, and 9 out of 10 clients returning for repeat work.

We are currently seeking a Data Migration Engineer to join a healthcare data migration project. You will extract, transform, and migrate patient and practice data from a wide range of Electronic Health Record (EHR) systems into a unified platform. 

About You

• Resourceful and relentless problem-solver - when the easy path fails, you find another;
• Meticulous attention to detail, especially where sensitive data is concerned;
• Align with key ethical principles, consistently demonstrating responsibility, confidentiality, and integrity;
• Able to deliver under deadline pressure without cutting corners on quality.

Requirements

• Strong programming skills, with hands-on experience in Node.js / JavaScript (ES Modules);
• Confident, strong Linux user: command line, shell scripting (grep, sed, awk, find), ssh, permissions, and cron/scheduled tasks;
• Proven experience with web scraping, API integration, and/or RPA, and the ability to pick the right data-acquisition approach per system: public APIs, unofficial/internal APIs, browser automation, HTML parsing, file exports, or RPA;
• Solid experience with the core stack: MongoDB, axios, puppeteer, cheerio, and cookie/session handling (tough-cookie / http-cookie-agent);
• Comfort parsing and normalizing many data formats - JSON, CSV, XML, HL7, CCDA, PDF, XLSX, and Access databases (csv-parse, fast-xml-parser, xlsx, mdb-reader, pdf-parse, officeparser, simple-hl7);
• Schema definition and data validation with zod;
• Familiarity with git, eslint + prettier, vitest, and Docker/docker compose;
• Careful, secure handling of sensitive patient data - least privilege, and data protected in transit and at rest;
• A track record of delivering on tight migration deadlines without compromising data accuracy.

Nice to Have

• Prior experience with EHR / healthcare data systems;
• Familiarity with HIPAA and healthcare data privacy regulations;
• Experience reverse-engineering undocumented APIs;
• Experience with additional headless-browser frameworks (e.g., Playwright).

As a Data Migration Engineer, You Will

• Design and build data extraction pipelines from EHR systems, using whatever approach the source system demands;
• Map and transform heterogeneous source data into standardized schemas;
• Own the end-to-end migration for assigned practices, from raw export to validated import;
• Write tests and validation checks to guarantee data completeness and accuracy;
• Take ownership of your migration timeline, anticipate blockers early, and deliver on schedule;
• Handle all patient data with care, confidentiality, and integrity, following the principle of least privilege;
• Collaborate with the team to continuously improve extraction, mapping, and tooling.

What We Offer

• You can fully realize your potential in a supportive environment where your experience is valued.
• We believe in continuous learning and development - you'll have access to a library, weekly tech talks, and course compensation (including English classes);
• If you love sharing knowledge, we'll fully support you!
• 20 days of Paid Time Off;
• A friendly, open atmosphere free from unnecessary bureaucracy, with a team that has a great sense of humor, where creativity and initiative are encouraged.
• Regular team events, including Friday pizza parties 🍕

More About SCIMUS

🔗 Company site: https://thescimus.com 
🔗 Company profile on DOU: https://jobs.dou.ua/companies/scimus-solution/

🚀 If you want to grow, contribute, and work in a friendly, creative, and ambitious team, we'd love to hear from you!

About the Role

We are expanding our team and looking for a PHP Developer to join our RnD department. You will work on developing and maintaining internal products, including CRM systems, CMS, marketing tools, and backend services that support multiple business units.
This is an excellent opportunity to work on high-load systems, modern microservice architecture, and large-scale data processing while collaborating with experienced engineers across multiple teams.

Who We Are

Our RnD department is a key driver of innovation in the company, consisting of multiple teams that develop CRM systems, marketing tools, CMS, payment solutions, and internal platforms. We focus on automation, scalability, and performance, building systems that support business growth across multiple products and regions.

Why Join Us?

• You'll work on high-load backend systems that process large volumes of data.
• You'll participate in designing new services and improving existing architecture.
• We use modern technologies, microservices, queues, and cloud infrastructure.
• You'll collaborate closely with architects, DevOps engineers, frontend developers, QA engineers, PMs, and Business Analysts.
• We encourage knowledge sharing, code reviews, and continuous technical improvement.
• You'll have opportunities for professional growth while working on complex engineering challenges.

Requirements
 

Must-Have:

• 2+ years of commercial experience with PHP 7+.
• Strong knowledge of MySQL and PostgreSQL.
• Experience developing REST APIs.
• Experience working with queue systems such as Redis, Beanstalkd, RabbitMQ, or similar.
• Experience with Gitlab/Github.
• Understanding of OOP principles, SOLID, and common design patterns.

Nice-to-Have:

• Commercial experience with Phalcon/Spiral.
• Experience with Kafka or other event streaming platforms.
• Experience with Docker and containerized environments.
• Basic knowledge of Kubernetes.
• Experience working with Elasticsearch or MongoDB.
• Understanding of microservice architecture.
• Experience with CI/CD pipelines.
• Experience working with high-load applications.
• Experience configuring web servers (Nginx).

Responsibilities

• Develop and maintain backend applications and microservices.
• Design, develop, and support REST APIs.
• Work with large datasets and optimize application performance.
• Refactor and improve existing codebase.
• Integrate internal and third-party services.
• Participate in architecture discussions and technical planning.
• Collaborate closely with frontend developers, QA engineers, DevOps, architects, and PMs.
• Participate in code reviews and follow established development standards.

Benefits

• 18 business days of paid vacation + public holidays compensation.
• Insurance Fund of the company.
• Partial coverage of professional courses.
• Coverage of sick leaves, sports activities, and English language courses.

On behalf of our Client from France, Mobilunity is looking for a Fullstack Laravel Engineer.

Our client is a table management software and CRM that enables restaurant owners to welcome their customers easily. The app is useful to manage booking requests and register new bookings. You can view all your bookings, day after day, wherever you are and optimize your restaurant’s occupation rate. Our client offers a commission-free booking solution that guarantees freedom above all. New technologies thus become the restaurateurs best allies for saving time and gaining customers while ensuring a direct relationship with them.

They are looking for a developer to join their Al squad and assist in implementing Al features using various tools and connecting them to the existing stack built on Laravel. The ideal candidate will play a crucial role in bridging the TypeScript part to PHP within the tech stack.

    Responsibilities:

• Work closely with the Al squad to implement Al features
• Utilize multiple tools to enhance Al capabilities
• Connect Al features to our existing Laravel stack

• Bridge the TypeScript part to PHP within the tech stack
   

  Requirements:

• 5+ years of professional software development experience, with PHP/Laravel as your primary backend stack
• TypeScript skills – you can read, write using ai, and review Node.js code confidently
• Strong SQL knowledge: you write clean queries, understand indexes, and can reason about query performance at scale
• Proven ability to articulate and justify architectural decisions: weighing trade-offs around reliability, scalability, and maintainability
• Active user of Al development tools (Claude Code, Cursor, Copilot, or similar) – you’ve integrated these into your daily workflow and are curious about pushing them further

• Upper-intermediate to advanced English proficiency(Strong spoken English is essential, including experience with technical interviews conducted in English and communicating with international colleagues.)
   

  Will Be a Plus:

• Solid Experience of using generative Al in production
• Familiarity with OAuth2 / OIDC flows and APl authentication patterns (API keys, tokens, scopes)
• Experience with message queues or event streaming (SQS, RabbitMQ, Kafka, etc.)
   

     In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups
  
  🐳 Come on board, and let’s grow together! 🐳

We are looking for a Senior Python Developer who is ready to scale and grow with us.
 

If you’re passionate about clean code, scalable backend architecture, and excited to build something impactful, we’d love to meet you!
 

What will you do?
 

• Contribute to the full backend lifecycle, from architecture design to production deployment;
• Design, develop, and maintain RESTful APIs using Python, Flask, FastAPI, and SQLAlchemy;
• Implement microservices architecture with message brokers and API gateways;
• Implement authentication and authorization with industry-standard encryption and access control;
• Optimize backend services for performance and efficiency, identifying bottlenecks and implementing solutions to improve response times and resource utilization;
• Implement complex algorithms and data structures to handle data processing, operations research (OR), recommendation systems, and optimization problems;
• Deploy and scale services on GCP (Cloud Functions, Cloud Run, Kubernetes); containerize with Docker;
• Design and optimize database schemas using PostgreSQL/MySQL and integrate Pandas/NumPy for analytics and ML;
• Document API specifications using OpenAPI (formerly Swagger);
• Collaborate with frontend, data science, and DevOps teams to align backend with product goals;
• Maintain engineering standards through code reviews, documentation, and knowledge sharing.
 

Requirements:

• 7+ years of commercial experience in backend development with Python;
• Upper-Intermediate English (B2 or C1) for comfortable verbal team communication.
• Strong hands-on experience with Python, Flask, and SQLAlchemy, Pandas, NumPy;
• Proficiency with Docker and Kubernetes;
• Expertise in software architecture and design patterns, with a proven track record of solving complex technical and performance problems;
• Strong understanding of algorithmic complexity, optimization techniques, and best practices for designing efficient algorithms to solve complex problems;
• Proven ability to handle complex, loosely defined business logic and structure intricate processes cleanly;
• Solid grasp of software architecture and design patterns, with a track record of solving complex technical and performance problems;
• Autonomous in architectural decision-making, comfortable owning hard problems end to end;
• Bonus points if you’ve worked in medical or sports domains.

Why Solid Software?
 

• We support Ukraine;
• A wonderful team of enthusiasts and like-minded people;
• Atmosphere of comfortable work & life balance;
• Flexible schedule and work-from-home opportunity;
• Opportunity to work on projects with different directions (web, mobile, tablet, watch, desktop);
• MacBook Pro and great tech;
• Decent compensation;
• Lack of bureaucracy;
• Compensation for professional events, sports activities;
• Corporate online parties and fun team-buildings;
• Anniversary and birthday presents.
 

Professional growth:
 

• Onboarding and mentorship program with a dedicated onboarding guide built by our team;
• Internal Career Path program from Developer to Architect that consists of knowledge areas for IT specialists, books, training sessions, and work activities;
• Corporate library with the best programming books (+ an ability to order a particular book if we don’t have it);
• Professional and constant feedback.
 

We truly value the unique talents and skills that each individual brings to our company. As we continue on our journey of growth, we eagerly anticipate the opportunity to welcome you into our team.
 

Apply now and help us shape what comes next!

About Us: InnovatelU is a dynamic tech company delivering cutting-edge solutions. We're looking for a passionate Java Developer to join our team. If you have a solid Java foundation, are eager to grow, and learn quickly, we want to hear from you! 

Requirements: 
- Strong knowledge of Java 
- Knowledge of Spring (Spring Core, Spring AOP, Spring MVC, Spring Security, Spring Boot) 
- Familiarity with REST APIs, web services 
- Proficiency in version control tools (Git) 
- Experience with build tools like Maven and Gradle 
- Experience with relational databases (PostgreSQL) 
- Expertise in containerization (Docker) 

- Experience in unit and integration testing 
- Strong communication skills and teamwork ability 
- English level: Intermediate or higher 

Will Be a Plus: 

- Solid understanding of design patterns 

- Experience with NoSQL databases like MongoDB and Redis 

- Familiarity with messaging systems like Kafka and RabbitMQ 

- Experience with microservices architecture 

Responsibilities: 

- Collaborate with senior developers and project managers 

- Assist in designing, coding, and testing applications 

- Write well-designed, efficient, and testable code 

- Participate in code reviews 

- Debug and resolve technical issues 

- Contribute to application documentation 

Interview Stages: 

1. Test Task: 1 hour 

2. HR Interview: 30 minutes 

3. Technical Interview: 1 hour 

We Offer: 

- Full Remote 

- Constant support and mentoring 

- Paid 5 working days of sickness per a year; 

- Paid all official Ukrainian holidays; 

- 18 working days of vacation per a year; 

- Opportunity for professional growth and career development 

If this sounds interesting to you, let's talk!

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

Our client operates a cloud-based platform dedicated to corporate ground transportation management, addressing a multi-billion-dollar market. The solution aggregates multiple transportation providers—such as corporate fleets, ride-hailing services, taxi operators, and limousine networks—into a unified system that helps businesses streamline operations and reduce spend. It serves a significant share of the largest companies worldwide and handles high volumes of transactions and data across diverse geographies. The platform’s core challenges include integrating heterogeneous external services, maintaining reliability under high-load conditions, implementing advanced business logic for scheduling and pooling, and providing accurate cost control and reporting. Strong backend engineering is critical to scaling global coverage, ensuring performance, and delivering a seamless user experience.

About the Role:

You will join a cross-functional development team responsible for core backend services that directly impact end users. The role offers full ownership of feature delivery—from reviewing product requirements and defining technical designs alongside architects and product managers, through to coding, testing, deployment, and monitoring in production. You will serve as first-line support for your services, proactively identify and address reliability and performance issues, and collaborate with other teams to ensure end-to-end system integrity. This position demands technical leadership, a hands-on approach to system architecture, and the ability to influence both engineering and product decisions. You will work remotely with periodic team gatherings and receive the tools and environment needed to deliver tangible business impact in a fast-paced, agile setting.

Key Responsibilities:

• Lead end-to-end development of backend microservices, including design, implementation, deployment, and production monitoring.

• Translate product requirements into scalable technical designs, data models, and RESTful APIs.

• Integrate with external transportation providers and internal systems to enable reliable, real-time workflows.

• Analyze and optimize system performance and database queries under high-load scenarios.

• Propose and implement architectural improvements to enhance resilience, scalability, and maintainability.

• Maintain and refactor existing services to improve code quality, test coverage, and observability.

• Collaborate with cross-functional teams and mentor peers on best practices in coding, testing, and operations.

• Participate in agile ceremonies, including backlog grooming and sprint planning, to align deliverables with business priorities.

Required Competence and Skills:

• 5+ years of backend software development experience in Golang (willingness to work with Ruby). 

• Proven experience designing and implementing data-driven applications using relational databases (e.g., PostgreSQL) and NoSQL stores (e.g., Redis).

• Solid understanding of RESTful API design principles and the HTTP protocol.

• Hands-on experience with Agile/Scrum methodologies and iterative delivery.

• Proficiency in writing unit tests and applying automated testing practices.

• Strong English communication skills, both verbal and written.

• Ability to understand complex business domains and translate needs into optimal technical solutions.

• Deep understanding of system architecture, high-load applications, and concurrency principles.

Nice to Have:

• Expertise in performance tuning of relational databases.

• Familiarity with gRPC and Protocol Buffers.

• Prior work on high-load, distributed systems.

• Background in building concurrent applications.

Why Us:

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in).

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

We are a Ukrainian multiproduct company that creates database development and management tools, connectivity solutions, productivity tools, and data services for more than 500.000 clients from 120 countries. Among our clients, you can find such legends as Microsoft Corporation, Oracle America, IBM, Intel, and many more companies that deserve their place in the Fortune 100 and Fortune 500.

Since 1997, we have been streamlining data workflows for professionals and teams with our intuitive and efficient software products. We’re committed to enhancing our customers’ experience across the globe by minimizing data-related tasks and enabling them to focus on more inspiring goals. Whether it’s Fortune-100 companies or individuals, we provide a customer-centric approach, delivering high-quality solutions and exceptional support.

Driven by passion, we play a substantial role in shaping the future of data management.

Product that needs your engagement 

You will be at the heart of building a new generation web-based application fully powered by AI technologies. This product is envisioned as a cutting-edge tool that redefines how professionals interact with complex data and workflows. We’re not just adding AI features into an existing app — we are designing an AI-first experience from the ground up, where automation, personalization, and intelligence are embedded in every interaction. The application will combine scalability, intuitive UX, and deep AI integration to create a solution that is both technically robust and delightful to use.

Your future team of professionals 

You will join an ambitious and growing team that values collaboration, ownership, and thoughtful engineering. You will work closely with Backend and Frontend Engineers, a Product Manager, and a QA Engineer, contributing to the development of the product and helping shape its technical direction as the team continues to grow.
 

Your future challenges & opportunities

Opportunities

• Direct involvement in the launch of a new product, with real impact on architecture and technical decisions.
• Hands-on experience building DWH integrations and MCP-based AI pipelines — one of the most in-demand skill sets in 2026.
• Work at the intersection of backend engineering and AI, expanding expertise beyond traditional .NET development.
• Opportunity to define integration patterns and technical standards from the ground up, rather than maintaining legacy code.

• Exposure to the full product lifecycle: from data modeling and API design to production deployment and optimization.

   

Challenges

• Proactively learn and adopt MCP, a recently introduced standard, keeping pace with a fast-evolving ecosystem.
• Design and implement DWH integrations with careful data modeling and schema planning — early mistakes can be costly.
• Balance product launch deadlines with the need to maintain clean, scalable, and maintainable architecture under pressure.
• Work across multiple technical domains simultaneously: data pipelines, API development, and AI tool integration.

• Validate and responsibly apply AI-assisted development tools, avoiding over-reliance on generated output.

   

Impact you will make 

• Design, build, and maintain scalable back-end services and APIs using C# and the .NET ecosystem, ensuring high performance, reliability, and maintainability.
• Ensure security, performance, and reliability across server-side components by applying SOLID principles, established design patterns, and back-end best practices.
• Write clean, testable, and well-documented code that meets team coding standards and supports efficient code reviews.
• Collaborate closely with front-end developers to design and integrate RESTful or GraphQL APIs that power seamless user experiences.
• Participate in code reviews and contribute to the continuous improvement of team engineering practices and standards.
• Optimize application performance, database queries, and system throughput to handle high-load environments efficiently.

• Conduct thorough testing and debugging to deliver high-quality, production-ready software.

   

Skills we are looking for 

• At least 5 years of experience as a .NET Developer (ASP.NET Core, Entity Framework Core), preferably in a tech-focused environment.
• Higher education in Computer Science, Information Technology, or a related field (relevant certifications are a plus).
• Deep understanding of software principles: SOLID, IoC, OOP, design patterns, and client/server architecture.
• Experience designing and building RESTful APIs and microservices.
• Experience with version control using Git and collaborative workflows (branching, pull requests, reviews).
• Familiarity with authentication concepts and secure application development (OAuth2, JWT).
• Experience with relational databases and ORM tools (SQL Server, PostgreSQL, Entity Framework Core).
• Experience with testing frameworks (xUnit, NUnit, Moq).
• Knowledge of Docker/docker-compose and basic CI/CD processes.
• Performance optimization skills: profiling .NET applications, identifying bottlenecks, and improving throughput.
• Ability to effectively use AI-assisted development tools (GitHub Copilot, ChatGPT, etc.), understand their limitations, and responsibly apply them in the development workflow.

Benefits you get

• Maintain your work-life balance

Manage your own working hours with our flexible schedule

19 days of annual vacation granted on a pro-rata basis

No overtimes required

• Hybrid type of cooperation

Whether you prefer to work remotely in the comfort of your home office or from one of our 4 offices, you can still take part in increasing the world`s awareness about quality Ukrainian products from any part of the world

• Stay healthy

Medical insurance from one of the top insurance companies in Ukraine with a wide range of included services, as well as special programs for relatives; and special options for those who live abroad.

15 working days of sick leave per year — because your health is a priority.

• Grow with us

In-house English courses — increase your proficiency through our online courses and speaking clubs with a native speaker

Online learning activities — workshops, lectures, and webinars to enhance your leadership, management, and self-awareness skills

Experience exchange — we are proud of our team of professionals who gladly share their deep expertise in all kinds of fields with the rest of the team

Promotions, rotations, and transitions — when you believe your skills could benefit a different role or team.

• Stand with Ukraine!

We have an active pro-Ukrainian position, and that means we help our army, our servicemen, and their families not only through constant donations and volunteering, but also through our military leave policy, special health insurance options, and financial help

We are a perfect match if you share our values

We are professionals in our field.

We know how to turn up our professionalism to the maximum, because we are experts who enjoy solving complex tasks.

We know how to focus on the product, think big, and at the same time delve deep into the details.

We create a calm and friendly atmosphere within the company.

We value the freedom of open and transparent communications.

Radical honesty is embedded in the foundation of our culture.

We are open to new things and constantly develop and practice regular knowledge sharing, which helps us evolve continuously.

Most importantly, the company creates an environment where we can fulfill our potential upon a solid foundation.

Our Hiring Process

• Recruitment Interview
• Technical Interview
• Offer Call

We strive to ensure transparency and openness in the hiring process, and we understand the importance of providing timely feedback. If your resume meets the job requirements, we will contact you to clarify details and schedule an interview within 2 weeks after your application is submitted.

The timeframe for feedback between interview stages may take up to 2 weeks.

N-iX is looking for a Senior Scala Software Engineer to join the Aggregates Engineering Team to help redefine how the world handles business intelligence.

Our customer is the semantic layer for modern data and AI. They bridge the gap between complex cloud data platforms—like Snowflake, Databricks, and Google BigQuery—and the business users who need consistent, AI-ready analytics. 

Responsibilities:

• Architect the Core Lifecycle: Design, build, and evolve the aggregate system that defines, manages, and optimizes aggregates to accelerate query performance across data platforms.
• Optimize Intelligent Performance: Architect the prediction and selection logic that identifies high-value aggregates and analyze query workloads to guide placement strategies.
• Scale High-Impact Systems: Improve maintenance and scheduling processes to ensure reliability and low overhead in large-scale environments, ensuring the system scales smoothly.

Requirements:

• 6+ years of professional software engineering experience and a BA/BS in Computer Science or a related field.
• Strong programming expertise in Scala and ideally have experience with Scala worker systems like Akka or Pekko.
• You can reason about complex system behavior, lifecycle state, and performance tradeoffs while maintaining a focus on production reliability.
• Experience with data warehouse concepts (Snowflake, BigQuery, etc.) and containerization technologies (Docker, Kubernetes).
• Excellent communication skills and are comfortable working across query planning and platform teams.
• You are based in or able to work Eastern/Central European Time hours.