Jobs Backend

We’re building a high-load P2P payment system already in production, processing thousands of transactions daily.
Now we’re looking for a Senior Software Engineer to help us scale, optimize performance, and reach our next milestone with 99.99% SLA.

💻 Tech Stack:

Backend: PHP 8.1, Laravel 10, MySQL 8.0, RabbitMQ, Redis, Hexagonal Architecture
Frontend: Laravel Livewire (+ Vue.js / React.js for checkouts)
Infrastructure: Docker, Bitbucket, Laravel Envoyer, Google Cloud
Tools: Jira, Confluence, Postman

💼 What you’ll do:

• Improve system scalability, stability, and security
• Design and optimize architecture & data flows
• Develop new features and enhance existing APIs
• Identify bottlenecks and optimize performance
• Implement and maintain testing processes
• Support production systems and ensure reliability
• Contribute to technical documentation

🔥 Requirements:

✔ Strong PHP (OOP) expertise
✔ Deep knowledge of Laravel / Symfony
✔ Solid experience with MySQL (indexes, transactions, ACID)
✔ Experience with testing (unit, integration)
✔ Understanding of security (SQL injection, XSS, CSRF, etc.)
✔ Experience with Docker, CI/CD basics
✔ Knowledge of SOLID, design patterns, DDD basics
✔ Understanding of microservices & system architecture
✔ Agile (Scrum/Kanban) experience
✔ Basic frontend skills (Vue.js / React.js)

⭐️ Nice to have:

• Google Cloud / Kubernetes
• Experience with RabbitMQ / queues
• DDD / Hexagonal Architecture
• CI/CD pipelines (Bitbucket / GitLab)

Blackthorn Vision is looking for a Middle Strong .NET Engineer. Our client, established in 2011 and based in Colorado, is a leading player in the U.S. application management market. We’ve had a successful partnership with this client and are seeking candidates who are eager to take ownership and improve a product already trusted by over 6,000 enterprises.

Please note: we’ll primarily consider candidates based in Lviv, as the project team is located there.

Requirements:

• 4+ years of commercial experience working on the backend as a .NET developer;
• Cloud systems development experience;
• Understanding of data access technologies, including Entity Framework and MongoDB;
• Experience with both SQL and NoSQL databases;
• Experience with microservice-oriented architecture, parallel, and asynchronous programming design patterns;
• Experience with Kubernetes, Docker, and RabbitMQ;
• Proven experience with Azure technologies: Azure Entra ID, Azure Storage accounts, Azure Service Bus, Azure Container Registry;
• Knowledge of design and architectural patterns;
• Proven ability to take ownership of features and drive them to production with minimal supervision;
• Product-oriented mindset: ability to see beyond implementation details and understand user impact and business value;
• Proactive and self-driven approach to problem-solving and decision-making;
• Experience collaborating with cross-functional teams (Product, Support, etc.);
• Experience mentoring or leading other engineers (formal or informal leadership);
• English level: Upper-Intermediate.

Responsibilities:

• Take end-to-end ownership of feature delivery: from requirements clarification and architecture design to implementation, testing, and release;
• Design scalable and maintainable solutions aligned with product goals;
• Collaborate closely with Product Owners, Support team, and end users to deeply understand problems and deliver effective solutions;
• Drive technical decisions and take responsibility for their outcomes;
• Participate actively in Agile processes (sprint planning, refinement, reviews, retrospectives);
• Conduct and contribute to code reviews to maintain high code quality and consistency;
• Produce clear technical documentation, including architecture diagrams and feature specifications;
• Support onboarding of internal teams (e.g., Customer Support) to newly delivered functionality;
• Identify improvement opportunities in the system and proactively suggest solutions;
• Contribute to team knowledge sharing and support less-experienced engineers as needed.

We are a leading European AI company developing cutting-edge document search and indexing systems for enterprise and AI applications.
Our products combine high-performance technologies, scalability, reliability, and data security, fully aligned with European regulatory and ethical standards.

As a Senior Search Engineer (Rust), you will take ownership of backend services, search and indexing service, API/SDK design, and performance optimization across our document search platform.
This is a senior, hands-on role, designed to be covered by 1-2 FTE split across specialists, ensuring full operational continuity and technical excellence.
You will be working at the core of our Search Team, enabling seamless search, retrieval, and processing of large-scale document datasets.  

Responsibilities:

• Develop and maintain backend services in Rust, focusing on performance, reliability, and scalability
• Design, implement, and optimize document search and indexing pipelines using Qdrant and PostgreSQL
• Drive API design, including lifecycle management (deprecation, sunsetting, adoption)
• Lead complex architecture and data model migrations for evolving systems
• Implement software engineering best practices (TDD, DDD, resiliency patterns)
• Troubleshoot, debug, and resolve performance and reliability issues in production
• Collaborate with Infra team to deploy and manage services on Kubernetes using Helm
• Contribute to CI/CD pipelines and deployment automation (GitLab, GitHub Actions)
• Mentor junior engineers and ensure team knowledge sharing
• Maintain clear documentation for system design, operational workflows, and troubleshooting

Requirements:

• 4+ years of professional backend development experience in Rust
• Strong experience with vector databases (Qdrant) and relational databases (PostgreSQL)
• Hands-on experience with Kubernetes and Helm for deploying and scaling services
• Solid understanding of distributed systems, resiliency patterns, and scalable architecture
• Experience in API/SDK design, data modeling, and lifecycle management
• Proficient in CI/CD workflows (GitLab, GitHub Actions) and deployment automation
• Excellent debugging, profiling, and performance tuning skills
• Strong communication skills and ability to work in cross-functional teams
• Ability to independently own and operate services in a shared-responsibility model (1–2 FTE split across specialists)

Nice to Have:

• Experience tuning Qdrant for large-scale, multi-node (OnPrem) deployments
• Advanced PostgreSQL configuration and indexing for high-performance search
• Familiarity with service meshes (Istio) and Kubernetes networking
• Experience with Docker image security, CVE scanning, and image hardening
• Exposure to AI/ML pipelines, vector search, or large-scale document retrieval systems

Technology Stack:

• Backend & Programming: Rust, API/SDK design, distributed systems
• Search & Indexing: Qdrant, PostgreSQL, vector search, indexing pipelines
• Infrastructure: Kubernetes, Helm, CI/CD (GitLab/GitHub Actions), deployment automation
• Resiliency & Reliability: Circuit breakers, retries, disaster recovery, TDD/DDD practices
• Security: Docker image hardening, CVE scanning, service security policies
• Monitoring & Observability: Logs, metrics, alerts for production workloads

The role is based in the Kyiv region, and we will expect you to work full-time in the office. We have a shuttle service from the nearest metro station.

About the Job

We are seeking a skilled Core Developer (Rust/ C++) for Swarm Robotics & Sensor Control with over 5 years of professional experience to join our dynamic development team. You will play a key role in building and optimizing the core architectures for the real-time control and management of robotic swarms and sensor systems. This position offers the opportunity to work with cutting-edge technologies and contribute to complex, mission-critical systems in a collaborative environment.

What is your Day to Day Mission:

• Design, develop, and maintain robust and scalable systems for swarm control and sensor management.
• Implement efficient communication protocols and real-time processing solutions for robotics.
• Collaborate closely with cross-functional teams to integrate backend components with robotics software and sensor networks.
• Optimize system performance, scalability, and reliability in a distributed robotics environment.
• Solve challenging problems using modern programming languages such as C++ and Rust.
• Participate in code reviews, architecture discussions, and software design decisions.

What you bring to the team:

• 5+ years of professional experience in backend development with a strong focus on real-time systems.
• Proficiency in Rust and C++, with a solid understanding of modern software development practices.
• Experience in building and optimizing backend architectures for distributed systems.
• Familiarity with network protocols, multithreading, and low-latency data processing.
• Knowledge of system architecture design, performance optimization, and resource management.

• Ability to work independently, solve complex technical problems, and thrive in a fast-paced startup environment.

   

Nice-to-Have:

• Experience in robotics, swarm control, or sensor integration.
• Familiarity with cloud platforms, Docker, or Kubernetes for scalable deployments.

• Understanding of embedded systems or real-time operating environments.

   

Why Quantum-Systems:

• We Stand with Ukraine
• We believe in the power of combined efforts: straightforward tech expertise paired with a customer-centric focus.
• We are industry pioneers who are ambitious, bold, and visionary.
• We push limits, think outside the box, and strive for technological excellence to shape the future of aerial data.
• We promise to be your runway for individual and professional growth.

Location: Remote / Lviv (flexible office)
Type: Full-time
Experience: 1,5+ years
English: Upper-Intermediate+

We’re looking for a talented Full Stack Developer to join a long-term project focused on building an intelligent call center solution. The platform helps businesses manage high volumes of customer communication efficiently — including real-time dashboards, smart call routing, CRM integration, and VoIP services.

This is a hands-on development role where your ideas will matter — the client is open to improvements and values technical input.

Tech Stack:

• Backend: .NET 6+, C#
• Frontend: React.js, TypeScript
• Database: MS SQL
• Integrations: Twilio, WebRTC, SignalR

• Cloud: Azure (optional)

   

What You'll Do:

• Build new features and maintain existing functionality
• Integrate telephony and CRM systems via APIs
• Optimize application performance and scalability
• Participate in technical discussions, estimations, and code reviews

• Work closely with the product owner and distributed team

   

Requirements:

• 1.5+ years of experience with .NET (C#) and React.js
• Strong understanding of web architecture and client-server communication
• Experience with REST APIs, relational databases, and version control systems
• Good spoken and written English (B2 level or confident B1+)

What’s In It for You?

• Career Growth — Opportunities to develop and advance.
• Performance Reviews — Regular feedback and support.
• Work Anniversaries — Special gifts to celebrate milestones.
• Flexible Work — Hybrid or remote (Lviv office available).
• Mentorship — Guidance from experienced professionals.
• Accounting Support — We handle the paperwork.
• Paid Time Off — 18 vacation days + 5 sick days per year.
• Extra Leave — 10 additional days off annually.
• Free Office Lunches — Enjoy meals on us.
• Team Events — Gatherings, gifts, and a welcoming atmosphere.

We’re looking for an experienced Full-Stack Developer who would help us reach the next level! If you are optimistic about managing full-stack development of web applications and websites and desire to have the opportunity to participate in a variety of projects with various back-end and front-end stacks - this opportunity is exactly what you are looking for.

Responsibilities:

• Participate in the entire application lifecycle, focusing on coding and debugging;
• Write clean code to develop functional web applications;
• Troubleshoot and debug applications;
• Perform UI tests to optimize performance;
• Manage technologies to improve legacy applications;
• Collaborate with Front-end developers to integrate user-facing elements with server-side logic;
• Gather and address technical and design requirements;
• Provide support to internal teams;
• Build reusable code and libraries for future use;
• Liaise with developers, designers, and system administrators to identify new features.

Qualifications

• At least 7 years working as a Full Stack Developer with a primary focus on the Back-End;
• 2-3 years of experience in the digital advertising ecosystem and at least 1 year of experience in Ad-tech;
• Experience with Client-side frameworks, preferably ReactJS;
• Experience with Server-side development in PHP(Laravel)/Python;
• Experience with databases PostgreSQL/MySQL, Redis;
• Experience with Git source control;
• Experience with production deployments, DevOps, and CI/CD;
• Passion for code craftsmanship;
• Attention to detail, organization, and multitasking;
• Excellent analytical and time management skills;
• Teamwork skills with a problem-solving attitude;
• Good command of English language.

Why do we enjoy working here?

• A young and driven team of professionals who are willing to grow and bring value.
• People-centric culture.
• L&D - support your need to replenish your knowledge and acquire new skills to do your job better via paid Professional training & e-learning courses.
• Flexible working schedule. We don’t use any time-tracker. We opt for performance.

Dripify (🔗 dripify.com) is a pioneering, remote-first IT product company specializing in outreach automation products. Our platform empowers businesses by revolutionizing hiring, sales, and marketing communication processes, making interactions more efficient and seamless.

We’re looking for a Java Team Lead who will split their time between hands-on backend development (50%) and technical/team leadership (50%).
 

You’ll lead a team of 5 engineers, ensure delivery quality, and own architectural decisions, while also contributing code and driving technical excellence.
 

Requirements
 

• 5+ years of hands-on Java development experience (Java 21+).
• 2+ years leading a development team.
• Deep practical experience with Spring Boot modules (Web, Security, Data, Messaging).
• Strong knowledge of Java concurrency, multithreading, and backend system design.
• Proficient in SQL databases (PostgreSQL preferred).
• Experience with REST APIs and asynchronous messaging (SNS/SQS).
• Skilled in CI/CD, code quality gates, and automated testing.
• Hands-on with Docker, Linux, and system-level debugging.
• Familiar with monitoring/logging tools (ELK, Prometheus, Grafana).
• Strong focus on security best practices: auth, validation, access control.
• Working knowledge of AWS: IAM, EC2, RDS, S3, CloudWatch, Secrets Manager.

Would be a plus:
 

• Experience in designing and operating microservice-based architectures.
• Familiarity with Kubernetes (EKS or self-managed).
• Experience with Terraform and Infrastructure-as-Code.
• AWS Certifications (e.g., Developer Associate, Solutions Architect).

• Bachelor’s or Master’s in Computer Science or related field.
  
   

   

Responsibilities
 

Development (50%)

• Build modular, secure, and maintainable backend systems using Java 21+ and Spring Boot.
• Design and implement RESTful APIs and event-driven services (SNS/SQS).
• Write tested, high-quality code with strong focus on unit/integration testing.
• Ensure CI/CD integration, monitoring, and production readiness.
• Drive system performance and scalability improvements.

Leadership & Delivery (50%)

• Lead a backend team: mentorship, code reviews, and engineering growth.
• Own delivery quality: scope planning, progress tracking, risk mitigation.
• Document and communicate architectural decisions.
• Coordinate cross-functionally with product managers, DevOps, and QA.
• Promote best practices in secure development and clean architecture.
   

Work conditions
 

• 100% remote position, providing flexibility and work-life balance.
• Competitive salary reflecting your skills and expertise.
• 24 days of paid vacation per year to recharge and relax.
• 10 days of paid sick leave.
• Educational opportunities.
• Compensation budget for medical and hobby/sport expenses.
• Generous budget for birthdays and anniversaries.
• Online and offline team events.

• A collaborative and innovative work environment with passionate team members.

  
   

Hiring process
 

✅ Interview with Recruiter (45 min) — ✅ Technical interview with Engineering Manager (90 min) — ✅ Interview with CTO (45 min) — ✅ Reference check — ✅ Offer

Small startup with big ambitions is looking for a trainee dev to join a team focused on the development of the Medical Information System. This is an open source project under GPL v3 license aimed at providing a free access to Ukrainian hospitals to the central database registry of medical data (eHealth).

Looking for a candidate with knowledge in the following:  

• Laravel, Livewire, Alpine, Tailwind (TALL stack)
• Git - working in a collaborative environment
• REST API - building own API and integration with the medical registry

Requirements:

• A proof of sufficient knowledge in PHP and Laravel (e.g., certificate from programming courses)
• Example of the code, e.g., own Laravel project on Github

What to expect:

• Building a large scale web application
• Building integrations with external services
• Working with qualified electronic signatures
• Full remote
• Official employment

ABOUT THE ROLE

We are looking for a highly skilled Python Engineer to work closely with AI engineering team to develop, deploy and implement AI-powered automations across the company.

Your primary responsibility will be to analyze internal processes, identify automation opportunities, and build intelligent solutions that improve efficiency, accuracy, and scalability. Integrate AI solutions and move them to production.

This role is ideal for someone who combines deep technical knowledge with a product mindset and enjoys building practical, high-impact AI systems.

Key Responsibilities

• Work closely with data science team and help them to develop highly optimized code for data processing and Machine Learning (ML).
• Define and implement the deployment processes.
• Develop backend REST services used in PoC. Design such services from scratch. Work closely with product team to identify the requirements.
• You will have flexibility to experiment with new libraries and technologies and use them for the projects.
• Integrate LLM models (OpenAI, Anthropic, open-source models, etc.) into internal systems and software products.
• Build and maintain prompt pipelines, agents, RAG systems, and internal AI services.
• Collaborate with operations, product, and engineering teams to map workflows and identify automation opportunities.
• Implement monitoring, logging, and evaluation frameworks for LLM-driven applications.
• Stay up-to-date with the latest advancements in LLMs, frameworks, and AI tooling.

ABOUT YOU

Qualifications & Experience

• Upper-intermediate level in spoken and written English
• Solid knowledge of Python and its ecosystem
• Experience with Relational Databases and SQL (PostgreSQL)
• Experience with Test frameworks (py.test, Tavern)
• Experience with Docker
• Hands-on experience with Git
• Understanding of Software Design, OOP, data structures and algorithms
• Understanding of REST API design principles
• Team playing attitude as well as ability to work and research independently

Would be a plus:

• Experience with LLMs, including fine-tuning, prompt engineering and model integration.
• Able to build meaningful visualizations of results
• Experience with AWS (preferred) or any other cloud provider (Azure, GCP, etc)
• Experience with data-mining methods and technologies
• Previous work with automotive or IoT data analytics
• Previous work on open source projects

WE OFFER

• International and multicultural working environment.
• Supportive regional team and collaborative culture.
• Clear career ladder and opportunities for personal development.
• Opportunities to gain new skills and grow both vertically and horizontally.
• Foreign language skills development (access to corporate platforms and language classes).
• Development benefit with an annual learning budget.
• Balanced paid time off package, including sick leave, public holidays, and vacation days.
• Additional seniority-based leave.
• Maternity and paternity leave.
• Bonuses for key life events (childbirth, wedding).
• Comprehensive health and life insurance coverage.
• Monthly sport and wellbeing support. Including team sport events.
• Corporate vehicle purchase discounts (preferential pricing on Stellantis vehicles).
• Access to various external partner benefits and discounts.

We are looking for a passionate Full-Stack Software Engineer with extensive experience in PHP and JavaScript who loves engineering and the product creation process. You will be responsible for developing new functionality, integrating different systems, optimizing, and modernizing the existing codebase.

The ideal candidate has experience in:

- PHP 8.X, multiple frameworks and libs;

- JavaScript from vanilla JS to React and ES14;

- HTML, CSS, SCSS, post-processing, scaffolding systems;

- relational databases, DB schema, and queries optimization;

- Linux, docker, CI/DI, bash;

- software engineering principles, architecture patterns, application scalability, low latency system availability;

- experience with cloud platforms such as AWS or Azure;

- problem-solving skills;

- communication and collaboration skills.

You will be responsible for:

- develop, architect, and maintain SaaS using PHP and its frameworks;

- implement frontend using JavaScript (from vanilla JS to modern libs and frameworks), HTML, SCSS;

- create and maintain RESTful APIs (SaaS and Proxy-APIs);

- design and optimize database interactions (PostgreSQL, AWS DynamoDB);

- write clean, testable, efficient, and maintainable code;

- test and debug your code to ensure the reliability and performance of the applications;

- collaborate closely with founders and service folks to deeply understand our customers/users.

Seniority:

- university degree (non-courses/academies; only technical university education);

- minimum 7+ years of actual experience (non «freelance», no gaps, ONLY respect years after a university degree);

- your years in IT don’t guarantee your seniority;

- the slope of your learning is MORE important than your total years in IT, but don’t kid yourself;

- this job vacancy is not for newcomers/juniors/entry/majority-mid level, one framework developer, and ONLY for product development folks.

The position is ONLY for Ukraine citizens. We don’t consider outsourcing, out-staffing, freelancing, or man-in-middle schemes; we only hire in Core Team as Core Team Member.

Join us for a fabulous adventure!

Gamzix company, a dynamic player in the iGaming industry:

• Was founded in March 2020 with a vision to redefine the world of online slot games
• Has already successfully produced 60 slot games
• The team has grown to over 120 skilled professionals, and we continue to grow
• Our main hub is in Warsaw — right in the heart of Europe
• With a strong focus on quality and compliance, we hold the prestigious MGA B2B Critical Supply License and certifications from industry leaders iTechLabs and GLI, ensuring the highest standards

Hey there! 👋

The Gamzix team is growing, and we’re looking for a Backend Engineer (Node.js) to help us design, build, and maintain reliable backend solutions that power our slot games and internal systems.

If you enjoy working with scalable architectures, APIs, and modern backend technologies — we’d love to meet you!

Responsibilities:

• Architect, design, and maintain backend solutions across multiple projects
• Develop and improve APIs, ensuring data integrity, security, and performance
• Collaborate closely with DevOps to improve infrastructure: CI/CD, monitoring, logging, and system reliability
• Conduct code reviews and promote best practices for clean, maintainable, and scalable code
• Investigate business needs and propose technical solutions
• Proactively handle system incidents and ensure uninterrupted service operation

Requirements:

• 2+ years of overall software development experience
• Strong hands-on experience with Node.js and TypeScript
• Practical experience with NestJS
• Solid knowledge of PostgreSQL
• Experience working with Redis
• Experience using RabbitMQ or other message brokers
• Understanding of backend architecture, asynchronous processing, and system reliability

What we offer:

• Market-level salary in the IT/Gaming industry
• Relocation support to Warsaw
• Referral bonus — bring in awesome people and get rewarded
• Home-Office coverage
• 7-hour working day: 10:00–18:00 (including lunch break)
• Hybrid model in Warsaw; full remote — for other locations
• Paid Sick Leave: up to 10 working days per year
• Paid Time Off: 18 vacation days, 10 days off, paid state holidays
• Corporate benefits: medical coverage, sports compensation, psychological services compensation
• Professional Development Support: reimbursement for external courses, training & certifications
• Corporate English classes (Business or General) — flexible timing
• Buddy Program
• Internal Gamzix Store (earn coins & exchange for branded gifts)
• Corporate team building and activities
• Open and transparent communication — accessible C-levels, quick decision-making, friendly and supportive atmosphere

Our people are passionate professionals who truly enjoy what they do. At Gamzix, your ideas matter, teamwork drives results, and everyone keeps up with the fast-paced rhythm of the iGaming industry.

We're looking for an experienced Back-End Developer to join our team and help build and evolve our enterprise SaaS platform. The role is primarily back-end focused (~75%), with regular involvement in front-end work (~25%) — we value developers who can own features end-to-end. You'll work on a multi-tenant system powering audit management, training, compliance, and reporting workflows for organizations worldwide.

Back-End (primary focus):

• Language & Framework: C# / .NET 8, ASP.NET Core Web API
• Databases: MySQL 8.0+ (primary), Entity Framework Core 8.0, Dapper
• Cloud: AWS (Lambda, SQS, S3, CloudFront, Secrets Manager, MediaConvert, QuickSight)
• Caching: Redis (StackExchange.Redis)
• Messaging: AWS SQS, MediatR (CQRS)
• Architecture: Clean Architecture, microservices, multi-tenancy, background job processing
• Auth: JWT, SAML2, AWS Cognito
• API: REST with OpenAPI/NSwag, API versioning

Front-End (secondary focus):

• Framework: Angular 21+ / TypeScript
• State Management: NgRx (Store, Effects, Signals)
• Styling: Tailwind CSS, SCSS, Angular Material
• Cross-Platform: Capacitor (iOS, Android, Windows)
• Testing: Jest

Shared:

• CI/CD: GitHub Actions, Jenkins, Docker
• Monitoring & Logging: Serilog, Elasticsearch/OpenSearch, LogRocket

What You'll Do

• Design, develop, and maintain back-end services and REST APIs
• Build and optimize database queries and data access layers (EF Core, Dapper)
• Develop and support microservices for audit, training, notification, and export workflows
• Work with AWS services (Lambda, SQS, S3) for async processing and infrastructure
• Implement caching strategies with Redis for performance-critical paths
• Pick up front-end tasks — build Angular components, integrate API endpoints, fix UI bugs
• Work across the full stack when delivering end-to-end features
• Participate in code reviews, architectural discussions, and technical decision-making
• Write unit tests (xUnit, Moq on back-end; Jest on front-end) and ensure code quality
• Troubleshoot production issues using structured logging and monitoring tools

Must Have

• 4+ years of commercial experience with C# / .NET (Core/.NET 5+)
• Strong knowledge of ASP.NET Core Web API and RESTful API design
• Hands-on experience with Entity Framework Core (migrations, query optimization, global filters)
• Solid understanding of relational databases (MySQL or PostgreSQL) — query tuning, indexing, schema design
• Experience with TypeScript/JavaScript (back-end or front-end)
• Experience with message queues (SQS, RabbitMQ, or similar) and async processing patterns
• Understanding of Clean Architecture, SOLID principles, and dependency injection
• Experience writing unit tests and working with mocking frameworks
• Working knowledge of TypeScript and a modern front-end framework (Angular preferred, React/Vue considered)
• Willingness to regularly contribute to front-end code and deliver features end-to-end
• Familiarity with Git and pull request workflows

Nice to Have

• Hands-on experience with Angular (components, services, RxJS, reactive forms) or React/Next.js
• Experience with NgRx or similar state management
• Experience using AI-assisted development tools (GitHub Copilot, Claude Code, Cursor, or similar) to boost productivity
• Experience with AWS services (Lambda, S3, SQS, CloudFront, Secrets Manager)
• Knowledge of Dapper for performance-critical queries alongside EF Core
• Experience with MediatR and CQRS patterns
• Experience with Tailwind CSS and Angular Material
• Background in Python (for Lambda functions or data processing) is a plus
   
• We offer:
• Great office location 3 minutes from Pecherska metro station and great office conditions;
• Flexible working hours;
• Comfortable working place;
• Medical insurance after the trial period ending;
• Team-building activities;
• Possibility of business trips to the US;
• 24 paid vacation days per year;
• 5 paid sick leave days per year.

It is a New Zealand-based business consultancy and advanced monday.com delivery partner. We help Kiwi businesses streamline their operations through process automation, platform integration, and smart workflow design

We're looking for an experienced integration developer to join our team on an ongoing basis. You'll work directly on client projects — building monday.com integrations, automating workflows, and connecting platforms across our client base. This is a hands-on technical role with real client exposure, so clear communication matters as much as clean code.

What You'll Be Doing:

• Building and maintaining custom monday.com integrations using the monday.com API and SDK
• Developing automation workflows in Make (formerly Integromat) connecting monday.com to third-party platforms
• Writing Python and JavaScript/Node.js scripts to extend platform functionality and handle data transformations
• Implementing robust error handling, logging, and monitoring across integrations
• Collaborating directly with clients to understand their workflow requirements and translate them into technical solutions
• Documenting integrations clearly so clients and the internal team can maintain them
• Troubleshooting and resolving issues in live client environments

Must-Have Skills: !!!

• monday.com API & SDK
• Python
• JavaScript
• Node.js
• Make (Integromat)
• Error handling & logging
• Workflow automation
• REST APIs
• Native English fluency !!!
• Nice to Have
• Zapier
• Webhooks
• Xero API
• HubSpot API
• AWS / Azure
• Git / version control
• monday.com Apps Framework
• Power BI
• Power Automate

What We're Looking For

• Proven experience building monday.com integrations — please include examples or portfolio links in your application
• Strong written and spoken English — you'll be communicating directly with NZ business clients
• Available during NZT business hours for at least part of your working day (overlap for meetings and client calls)
• Reliable, self-directed, and comfortable working asynchronously across a remote team
• Someone who takes ownership — you flag problems early and bring solutions, not just issues

Company Description

Are you a seasoned engineer passionate about building scalable, high-performance systems? This Senior-level role offers the opportunity to work remotely with talented teams across Europe, Ukraine, and LATAM.

At Sigma Software, we deliver cutting-edge solutions for global customers, combining technical excellence with a service-minded approach. In this role, you will join a distributed team to architect and evolve an advanced Ads platform, contributing to both innovation and stability.

Why join us? You will work on complex, high-impact systems, collaborate with international experts, and enjoy the freedom to shape architecture and technical patterns that drive long-term success.

CUSTOMER

We partner with a leading company in the AdTech space, delivering high-performance, scalable solutions that empower advertisers to manage campaigns, optimize targeting, and analyze results in real time. The Customer values innovation, reliability, and long-term collaboration, and operates globally with distributed teams in Europe, LATAM, and other regions.

PROJECT

The project focuses on building and evolving core systems for an advanced Ads platform integrated into a product for the interior decor industry. This product enables users to preview and visualize home items before purchase, enhancing shopping experiences both online and in-store.

Job Description

• Design, develop, and maintain APIs and services supporting ad campaign management, targeting, delivery, attribution, and reporting
• Architect scalable, reliable, and high-performance distributed systems
• Optimize systems for high-throughput and low-latency event/data processing
• Drive architectural decisions and establish development patterns
• Collaborate with distributed teams to ensure seamless integration and delivery
• Mentor and guide other engineers, fostering technical excellence

• Ensure code quality, maintainability, and alignment with long-term product goals

   

Qualifications

• At least 5 years of commercial experience in building scalable, high-performance systems
• Hands-on experience with AdTech solutions such as DSP, SSP, ad exchange, prebid, Google Ad Manager, or openRTB
• Strong proficiency in Python, preferably with the Django framework
• Solid knowledge of computer science fundamentals, including data structures, algorithms, and distributed systems
• Good understanding of distributed system architecture with a focus on data availability, reliability, and performance
• Practical experience with Kubernetes, PostgreSQL, and AWS

• Upper-Intermediate level of English

   

WILL BE A PLUS

• Experience with dbt and Redshift

• Familiarity with interior decor industry solutions

   

Additional Information

PERSONAL PROFILE

• Attention to detail and quality
• Excellent communication skills
• Leadership mindset, proactiveness

About us

We build AI-powered solutions that solve real business problems. You’ll work with the latest technologies and implement production-grade AI features, including RAG pipelines, agentic and multi-agent workflows.

Responsibilities

• Solve engineering problems related to process automation, knowledge systems, and agentic / multi-agent architectures.
• Design, build, and maintain AI-powered features that go beyond basic LLM API calls.
• Develop backend services using Node.js (Express, Fastify, or NestJS).
• Implement and iterate on RAG pipelines (retrieval strategies, chunking, evaluation, quality improvements).
• Integrate external APIs, payment systems, and authentication flows.
• Design clean REST APIs and ensure reliable client–server communication.
• Work with PostgreSQL.

Requirements

• Strong problem-solving mindset, creativity, and ability to learn quickly.
• Solid Node.js experience in production (2+ years).
• Practical experience and strong interest in LLM-based systems, not just simple ChatGPT-style wrappers, including:
  • RAG
  • LangChain (bonus: LangGraph, LangSmith)
  • Prompt engineering
• Understanding of backend fundamentals: APIs, databases, performance, and debugging.

Nice to have

• Experience with Python and FastAPI.
• Redis, queues, caching.
• AWS or GCP familiarity.
• CI with GitHub Actions.
• Monitoring and tracing tools (Prometheus, Grafana, OpenTelemetry).

What we offer

• Competitive salary and bonuses
• Remote-first culture
• Flexible schedule
• Open-minded, results-driven environment
• Product ownership and impact