Jobs Backend

Numerical Technologies LTD is a leading provider of custom software solutions and services specializing in risk, limits, and regulatory capital systems. We are currently looking for a Junior/Middle Python Developer to join our team.

What will you be doing?

As part of the team, you will be participating in a project with a large US bank. You will be helping build new software features, support, and maintain existing ones. You will be writing scalable and fault-tolerant code, debugging programs, and integrating applications with internal and third-party services. You will be collaborating closely with the product team to understand the system’s functional and non-functional requirements and contribute to code quality through unit testing, integration testing, code reviews, and system design using Python to build robust software that aligns with business needs.

What are we looking for?

• 2+ years of commercial experience with Python and good understanding of OOP principles.
• Good knowledge of data structures and algorithms.
• Experience with FastAPI or other Python web frameworks.
• Experience working with SQL databases.
• Strong problem-solving skills and ability to collaborate effectively in a team environment.
• Bachelor’s degree or higher.

Nice to have: 

• Background in quantitative finance, mathematics, or risk modeling.

What we offer:

• Competitive compensation depending on experience and skills.
• Regular assessments and salary reviews.
• Paid personal days.
• Mental health support program.
• Language classes.
• Flexible working schedule.

VANTREXIS is an engineering agency that builds dedicated remote teams for high-growth SaaS companies in the US, UK, and EU. We are looking for a Senior Backend Engineer to develop new features in a complex, integration-heavy product environment.

The Role

You will join a team where AI-augmented development (Cursor, Claude, Copilot) is a daily standard, not a bonus. Your focus will be on delivering clean, typed code within established architectural patterns — and raising the quality bar as you go.

Tech Stack

• Core: PHP 8.2 + Laravel 12.
• Database: MySQL 8 + Redis.
• ORM: Eloquent.
• Auth: Laravel Passport (OAuth 2.0), Spatie Permission (RBAC).
• Queue: Laravel Queue with multiple named workers.
• Cloud: AWS S3, SES, SNS.
• Payments: Mollie.
• Real-time: Pusher, Firebase FCM.
• Integrations: Microsoft Graph, Google API, BIG Register (SOAP).

• Testing: PHPUnit 11.

   

   

What You'll Do

• Build & Architect: Deliver new API endpoints following the Controller → Service → Repository pattern.
• Ownership: Take full responsibility for features from analysis to production deployment.
• Quality First: Write feature tests alongside every new feature to raise current coverage.
• Integrate: Extend and maintain external integrations (Mollie, AWS, Firebase, healthcare APIs).

• Proactive Improvement: Identify architectural bottlenecks and edge cases before they become problems.

   

   

Requirements

• Expert PHP/Laravel: Deep knowledge of Eloquent, Passport, Policies, Events, and Jobs.
• RBAC Patterns: Experience with complex authorization flows and company-scoped roles.
• Database Mastery: MySQL 8 optimization and writing safe, backwards-compatible migrations.
• Mindset: You think like an owner, not just a task-executor; you communicate risks early.
• AI-Tooling: Proficiency in using AI-powered tools to maximize engineering efficiency.

• Testing Culture: A "craftsmanship" approach where untested code is not considered "done".

   

   

Nice to Have

• Experience with Mollie or equivalent payment lifecycles.
• Familiarity with AWS IVS (live streaming) or Pusher.
• Experience using PHPStan / Larastan for static analysis.
• An active GitHub profile or technical pet-projects.

What We Offer

• Remote-first: Work from any safe location in Ukraine.
• Stability: VANTREXIS is an official Diia City resident.
• Cooperation format: We cooperate with specialists under a gig contract model within the Diia City legal framework.
• Paid Time Off: Fully paid vacation days and sick leave policy.
• Health: Corporate medical insurance and mental health support.

• Culture: A small, agile team with a flat structure and zero unnecessary bureaucracy.
   

   

Hiring Process

1. HR Screen: Intro call to discuss your experience, expectations, and salary range.
2. Technical Interview: Deep dive into your engineering skills and architectural thinking.
3. Client Technical Challenge: If the technical interview goes well, the client will provide a time-limited technical assignment to assess your practical skills and decision-making.
4. Challenge Review Interview: If the assignment is successful, you will have a short follow-up interview with the client to discuss your code, technical decisions, and overall approach.
5. Final Decision.

We're looking for a Node.js Developer in Odesa.

You'll lead the migration of our core product to Node.js, rewriting the backend from scratch. At the beginning, you'll be driving the migration independently.

The company develops its own products, with customers including Disney, Carlsberg, and Lexus.

You'll be the first Node.js developer on the team.

What you'll do

• Design the backend architecture in Node.js
• Build backend services using Node.js and TypeScript
• Design scalable data models and APIs
• Integrate services with AWS infrastructure (EC2, S3, Lambda)
• Debug and optimize production services

We're looking for someone with

• 4-6 years of backend development experience with Node.js
• Strong JavaScript / TypeScript skills
• Solid understanding of asynchronous programming and REST APIs
• Experience designing backend architectures and scalable services
• AWS experience
• English level B2+ (the technical interview and daily communication with the CTO are conducted in English)

What we offer

• 20 working days of paid vacation + 5 paid sick days
• Private medical insurance (starting from the third month)
• Official employment, tax coverage, and accounting support

About AIstats

AIstats is transforming the football data market by moving from 2D to 3D, powered by a cutting-edge Computer Vision and Machine Learning ecosystem that unlocks deep insights for both fans and professionals.

In 1.5 years, the Warsaw-based startup has grown from $0 to $3M ARR and secured over $2M in funding. As an AI-first startup, we’re looking for passionate builders who want to create something big and shape the future of football intelligence with us.

What we build

Advanced Football Analytics - a mobile app for football fans and bettors that reached 100k MAU in less than a year, featuring advanced statistics powered by our proprietary ML and Computer Vision technologies.

Advanced Analytics for Football Clubs - a next-generation analytics platform helping football clubs, scouts, and agents make smarter decisions both on the pitch and in the transfer market. Thanks to our early leadership in skeletal tracking data, AIstats secured several Tier-1 club partnerships within months of launching the platform.

Key Responsibilities

• Development of new HTTP and WebSocket endpoints with integration of third-party APIs (REST/gRPC/GraphQL - depending on tasks).
• Writing unit and integration tests to ensure correct operation of APIs, including boundary cases and work with external services.
• Performing load testing and code profiling to identify bottlenecks and improve performance.
• Working closely with frontend, analytics and product teams - from discussing specifications to implementing solutions in production.

Requirements

Must have:

• Strong knowledge of Node.js and TypeScript, experience in REST/WebSocket API development.
• Experience with microservice architecture and interaction between services via RabbitMQ, Redis, TCP connections.
• Knowledge of PostgreSQL (query writing, indexing, transactions, migrations).
• Experience with MongoDB and understanding when it is appropriate to use it.
• Experience with Docker, understanding of how docker-compose works.
• Understanding of the principles of Nginx as a proxy server (including in the context of WebSocket/HTTPS).
• Proficiency with Socket.io, understanding of its features (e.g., rooms, reconnect, persistence, etc.).
• Experience in configuring logging, debugging and profiling backend code.

Will be a plus:

• Understanding how Billing systems work
• Experience with Elasticsearch: setting up and using it for full-text search.
• Load testing skills and tools (e.g. k6, Artillery, autocannon).
• Understanding and implementation of HTTPS, certificates, working via secure WebSocket.
• Experience with CI/CD and build automation in a Docker environment.
• Team development experience: code review, git flow, Jira/YouTrack/Linear.

What we offer

• Fully remote work format and flexible working hours.
• Competitive salary pegged to USD.
• 24 days of paid vacation and 15 additional paid days off (including sick leave, personal days and corporate holidays)
• A friendly communication culture, rapid product cycles, and transparent processes.
• Dynamic work environment with a team passionate about sports and technology.
• Opportunities for professional development and career growth.
• No micromanagement — just trust, ownership, and freedom to experiment.
• Mentorship and high-quality engineering feedback.

Join our team and help drive innovation in the football industry!

We are seeking an energetic, multi-talented VoIP Software Engineer who is excited by complex technical challenges and motivated by building high-quality communication products. You will be a core contributor to our business phone system, designing and implementing new features across multiple product areas, from SIP infrastructure to integrations with external services. 

This role combines deep VoIP expertise with strong software development skills in modern web technologies. 
 

Responsibilities 

• Design, develop, and maintain VoIP services and components for our SIP-based platform. 
• Implement and enhance integrations with external systems, including third-party APIs. 
• Analyse, troubleshoot, and resolve complex SIP/RTP/WebRTC issues to ensure high call quality and reliability.  
• Apply secure software design and development principles across all layers of the stack. 
• Develop and maintain RESTful APIs and related backend services. 
• Conduct testing and optimize performance and scalability. 
• Support the team in defining, improving, and enforcing secure development processes and policies. 
   

Required Skills & Experience 

• Bachelor’s degree in Telecommunications, Computer Science, or a related programming/engineering field. 
• Solid experience as a VoIP developer/engineer working with SIP-based platforms. 
• Strong hands-on experience with Kamailio and Asterisk (design, scripting, configuration, and troubleshooting). 
• Deep understanding of SIP and related protocols: TLS, SDP, RTP/SRTP/RTCP, ICE, WebRTC. 
• Good experience with FreeSWITCH and/or FreePBX 
• Experience in monitoring with tools such as Grafana, Zabbix, Loki (or similar). 
• 3+ experience with Node.js \ python and Express.js (or similar Node frameworks). 
• Experience designing and building REST APIs.
• Hands-on experience with relational databases (RDBMS) such as MySQL and PostgreSQL. 
• Strong background working in Linux environments (system administration basics, networking tools, shell scripting is a plus). 
• Git and standard CI/CD workflows. 
• Experience with AWS services ( EC2,S3, AWS cli, ECS, ALB, ERC) a plus 
• Knowledge and experience with Message brokers (SQS, RabbitMQ). 
• Ability to work independently as well as effectively collaborate within a team. 
• Strong self-learning skills and willingness to stay current with VoIP and software development technologies. 
• Good problem-solving abilities and a structured approach to debugging and troubleshooting. 

Probation period: 3 months

Work equipment: Yes

We’re looking for a AI-First Developer who uses Claude Code as their primary IDE. You build complete systems from schema to deploy, understand agentic loops from the inside, and write your own MCP servers.

Responsibilities:

• Use Claude Code as your primary environment — agentic workflows, sub-agents, and multi-step orchestration are part of your daily routine
• Architect and ship end-to-end features from schema to production, owning the full slice
• Build and operate Go services on AWS and Cloudflare Containers
• Develop Vite + React frontends using react-strict-dom, Suspense, and server components
• Stand up edge APIs on Cloudflare Workers with the right storage primitive for each job
• Write internal skills, MCP servers, and slash commands that make the whole team faster
• Own the bash, Dockerfiles, and CI/CD glue that keeps the system running
• Critically evaluate AI output

Requirements:

• Hands-on experience with Claude Code — agentic workflows, sub-agents, hooks, slash commands
• Strong knowledge of Go and container-friendly service design
• Deep understanding of React + Vite — Suspense, server components
• Hands-on experience with AWS (EC2, EKS, S3, RDS) and Kubernetes
• Practical knowledge of the Cloudflare stack — Workers, R2, KV, D1, Durable Objects
• Good understanding of AI tool calls — schemas, retries, streaming, failure modes
• Experience with Terraform, Docker, and CI/CD pipelines
• Familiarity with Stripe and Stripe Connect
• Terminal-native — bash, Linux, tmux
• Fluent English for direct client communication

We Offer:

• Innovation Culture: Work in a team that actively experiments with AI and modern development approaches
• Real Product Impact: Direct collaboration with a client and influence on product decisions
• Flexible Work: Remote work or a modern office in Kyiv
• Generous Time Off: 20 paid vacation days + 15 sick leave days annually
• Professional Growth: Compensation for courses, certifications, and learning resources
• Cutting-Edge Tools: Access to premium AI tools (Cursor Pro, Сlaude Code, Codex, GitHub Copilot, etc.)

Recruitment Process:

1. HR Interview
2. Tech&Final Interviews
3. Job Offer

If you have any questions or need clarifications, feel free to reach out to our Talent Hunter Team by email.

About Us
At UITOP, we design and develop scalable B2B SaaS platforms across industries such as logistics, finance, construction, and more. Our teams build high-performance, reliable, and secure solutions. 

Job Summary

We are looking for a PHP Developer. The role focuses on working on system architecture and implementing complex business logic for a large-scale B2B SaaS platform. You will work with Symfony and Doctrine ORM, improve legacy codebases, and contribute to scalable, maintainable architectures.

Requirements

• 2-4 years of experience in PHP development with strong expertise in Symfony and Doctrine ORM.
• Experience working with MySQL and designing efficient, scalable database structures.
• Experience auditing, refactoring, and improving legacy codebases to build maintainable and reusable architectures.
• Strong understanding of software architecture principles and complex business logic implementation.
• Experience with multi-level access control systems and security-focused application development.
• Experience using AI development tools (Cursor, Claude Code, GitHub Copilot, Codex, or similar) in daily workflows.
• Upper-Intermediate English (B2) or higher.

Bonus

• Familiarity with Python and willingness to work with AI-related modules.

About project
A platform that collects environmental impact data for goods imported from third countries to the EU and generates reports to determine required CBAM certificates. Team: CTO, Senior DevOps/Full-Stack, 2 Full-Stack, AI Specialist, UI/UX Designer, QA.

What we have

• Regular performance and salary reviews. 
• Working with complex large-scale SaaS projects, from 6 months.
• 18 working days of vacation and 10 sick days.
• Compensation 50% for professional development cources. 
• Free Internal English classes.
• Company equipment. We’ll provide a laptop after 6 months of work. 
• Financial compensation of coworking 100% (during blackouts).
• Flexible work schedule, remote.

Our focus is on a result-oriented person, ready to learn and implement new technologies. Maybe you are our match, let's talk!

Head / Lead Java Engineer (igaming)

We are looking for a Head / Lead Java Engineer to lead the development of our high-load platform while remaining deeply involved in engineering and architecture decisions.

This role combines technical leadership, hands-on software development, and team management. You will be responsible for designing and evolving highly loaded microservices, driving architectural decisions, ensuring system scalability and reliability, and building strong engineering practices across the team.

You will work with modern cloud-native technologies and a diverse data ecosystem while helping the business scale through reliable, cost-efficient, and resilient technical solutions.

What You’ll Own

— Design, develop, and improve a system of highly loaded microservices and distributed service
— Write production code and actively contribute to technical implementation
— Drive architecture decisions around scalability, reliability, performance, and cost-efficiency
— Ensure low-latency and high-throughput system performance across critical business services
— Select and evolve data storage solutions based on workload requirements, balancing relational databases, NoSQL stores, caching, and streaming technologies
— Own platform observability, monitoring, metrics, logging, and alerting practices
— Ensure effective deployment strategies, release processes, and meaningful test coverage
— Build reliable event-driven architectures using Kafka and microservice design principles
— Lead and grow the engineering team through hiring, mentoring, code reviews, and regular 1:1s
— Establish engineering standards, ownership models, on-call processes, and delivery practices
— Represent the team in cross-functional discussions and help align technical initiatives with business goals

What We’re Looking For

— 10+ years of Java development experience
— 5+ years in a Technical Lead role
— Strong experience building and operating low-latency, high-throughput production systems
— Expert knowledge of Spring Boot, Spring Data, and Hibernate
— Deep understanding of multithreading, concurrency, and non-blocking I/O
— Strong experience with both SQL and NoSQL databases and a practical understanding of their trade-offs
— Production-grade AWS architecture experience
— Experience with Docker, Kubernetes, and cloud-native applications
— Strong understanding of event-driven architecture and Kafka
— Experience designing and maintaining REST and GraphQL APIs

— Hands-on experience with Grafana, Prometheus, and ELK
— Upper-Intermediate English or higher

Nice to Have

— Experience in iGaming, fintech, payments, or another highly regulated domain
— Experience building multi-region architectures
— Strong understanding of backup, disaster recovery, and resilience strategies
— Experience operating PostgreSQL, DynamoDB, Redis, Cassandra, ClickHouse, and streaming platforms in production environments.

We Offer:

— 20 vacation days + 36 paid sick leaves per year.
— Flexible schedule with no micromanagement.
— Fully remote work environment.
— Opportunity to work on an international product serving multiple markets.
— Professional development and support in growing QA expertise.
— Opportunity to develop automation testing skills.
— International team with transparent communication and fast decision-making.
— Long-term cooperation and career growth opportunities.

Selection Stages:

1. Call with Recruiter
2. Technical Interview
3. Final Interview
4. Job Offer

Join us and help deliver high-quality products used by thousands of users worldwide! 🚀

Job Title: Senior .NET / C# Developer (MetaTrader 5 Integration & Power Platform)
Company: VCG Tech Limited
Location: Remote (Global)
Employment Type: Full-Time

Role Purpose

You will own the integration connector that links our trading platform to the backend systems powering our introducing-broker and partner program. This connector is the source of truth for moving trading and account data out of MetaTrader 5 and into the services that calculate and present partner activity, so its correctness, latency, and resilience directly shape what partners see and how they are rewarded. When this layer is reliable, the rest of the partner experience simply works; when it is not, the impact is immediate and visible, which is why this is a senior, ownership-heavy role.

Day to day you will design, build, and harden .NET/C# services that synchronise data between MetaTrader 5 and our backend, expose it cleanly to the partner platform, and stay healthy under production load. You will work closely with a primarily Java microservices backend team, agreeing on contracts and integration patterns across language boundaries, and partner with product and operations to keep data flows accurate and observable. You will work remotely within a focused product team and be expected to lead technically on everything connector-related, from design through production support. Beyond the connector, you will also extend our Power Platform (Dataverse) CRM with custom C# plugins, applying your .NET skills across both the trading-integration and CRM sides of the platform.

Key Responsibilities

Build and Own the Integration Connector

• Design and maintain .NET/C# services that synchronise trading and account data between MetaTrader 5 and backend systems
• Keep data flows accurate, idempotent, and consistent across sources, handling reconciliation and replay where needed
• Expose clean, well-versioned interfaces so the partner platform can consume trading and account data reliably
• Own the connector end to end, from design and implementation through deployment and production support

Reliability and Resilient Processing

• Engineer for production load with backpressure, retries, timeouts, and graceful degradation
• Implement asynchronous and message-based processing that recovers cleanly from failures and partial outages
• Establish safeguards against data loss, duplication, and drift between MetaTrader 5 and downstream systems
• Diagnose and resolve production incidents, then close gaps with durable fixes and follow-up improvements

Observability and Operations

• Instrument services with metrics, structured logging, and tracing so behaviour is transparent in production
• Define meaningful alerts and dashboards that surface integration health before users feel the impact
• Track latency, throughput, and error budgets, and act on the signals they reveal

Power Platform / Dataverse Plugins

• Build and maintain custom C# plugins for our Power Platform (Dataverse / PowerApps) CRM — server-side business logic, validation, and automation triggered by CRM events
• Integrate the CRM with trading, partner, and payment data so records stay accurate and actionable
• Package, register, and version plugin assemblies and support them to production with the same reliability bar as the connector

Cross-Team Integration and Quality

• Collaborate with a primarily Java backend team to agree on contracts, integration patterns, and data ownership
• Align on REST and messaging conventions that work cleanly across .NET and Java services
• Uphold engineering quality through tests, code review, and CI/CD pipelines
• Document integration behaviour and operational runbooks for the wider team

Required Experience & Skills

• Strong professional experience building production services in .NET / C# (modern .NET)
• Experience building C# plugins for Microsoft Power Platform / Dataverse (PowerApps), or strong server-side C# experience with the readiness to own Dataverse plugin development
• Proven track record designing and operating system-to-system integrations and connectors
• Depth in integration patterns using REST APIs and/or message-based, event-driven processing
• Solid SQL and relational database skills, including modelling for synchronisation and reconciliation
• Hands-on experience with asynchronous and reliable processing: retries, idempotency, backpressure, and failure recovery
• Demonstrated ownership of reliability and observability in production, using metrics, logging, and tracing
• Experience running services on AWS as the primary cloud, including containerised workloads
• Comfort collaborating across language boundaries with a primarily Java backend team
• Strong debugging and incident-resolution skills under production conditions
• Senior-level judgement on design trade-offs, with the autonomy to own a component end to end

Nice to Have

• Experience with the MetaTrader 5 Manager / Gateway API
• Hands-on experience administering or managing a Power Platform / PowerApps (Dataverse) CRM — solutions, model-driven apps, security roles, and Power Automate flows — is a strong plus
• Background in trading, brokerage, or CFD/FX fintech
• Experience integrating .NET services with Java microservices in production
• Familiarity with Docker and Kubernetes for packaging and running services
• Working knowledge of observability tooling such as Grafana, Prometheus, or CloudWatch
• Exposure to infrastructure as code with Terraform
• Experience with CI/CD pipelines and Git-based workflows
• Familiarity with introducing-broker or partner / affiliate program domains

About the company:
Company Overview
A full-service growth marketing agency that helps businesses accelerate growth through integrated branding, creative, digital marketing, media buying, SEO, web development, data analytics, marketing automation, and outbound sales. The company partners with SMBs and enterprise clients, delivering end-to-end strategies that combine creativity, technology, and performance marketing to drive measurable business results.

Primary responsibilities:
• Manage the web development team and workload allocation
• Define and evolve the team's technical direction
• Evaluate and improve development processes
• Plan and manage web projects end-to-end
• Assign tasks based on developers' capabilities
• Monitor deadlines, quality, and project delivery
• Prepare project status reports and presentations

Requirements:
• 2+ years of hands-on or managerial experience in web development (Front-end, Back-end, Full-stack, or WordPress)
• Strong knowledge of PHP, WordPress, HTML, CSS, and JavaScript
• Experience with Shopify and CRM systems is a plus
• Understanding of Agile, Scrum, and Kanban methodologies
• Ability to estimate project scope, effort, timelines, and costs
• Experience managing teams and multiple projects simultaneously
• Proven ability to make technical decisions and improve development processes

• English B2+

•  Higher education in IT, Computer Science, or related fields

!It is important to be available and work according to Canadian time zones.

Benefits:

• Opportunity to build processes from scratch
• Role in a new project with vertical growth opportunities as the team scales
• B2B collaboration
• Two weeks of paid vacation
   

About Flamingo

Flamingo is revolutionizing the Managed Service Provider (MSP) industry with an AI-driven, open-source platform for IT and security. Our goal is to empower MSPs with automation, optimization, and scalability tools to enhance their operations. 

Role Overview

As a Senior Back-end Engineer (Java) at Flamingo, you will design and develop scalable, high-performance back-end services and APIs using Java and Spring Boot. You will be responsible for implementing event-driven microservices, optimizing system performance, and ensuring high availability as we scale our platform. Your expertise in processing high-volume logs and integrating multiple data sources will be critical to building a robust and efficient system.

Key Responsibilities

• Design and develop scalable backend services and APIs using Java (Spring Boot).
• Architect and implement event-driven microservices with Kafka and RabbitMQ.
• Process and analyze high-volume logs efficiently to ensure scalability and real-time insights.
• Integrate and manage multiple data sources, including SQL, NoSQL, and streaming data.
• Optimize database performance using PostgreSQL, Redis, and Elasticsearch.
• Implement authentication and authorization mechanisms with OAuth, JWT, and Keycloak.
• Collaborate with front-end and DevOps teams to build a seamless and resilient system.
• Ensure code quality through automated testing, CI/CD pipelines, and best engineering practices.

Qualifications

Must-Have:

• 5+ years of experience in backend development with Java and Spring Boot.
• Experience in microservices architecture, including event-driven systems (Kafka, RabbitMQ).
• Strong knowledge of RESTful APIs, GraphQL, and WebSockets.
• Experience processing high-volume logs and working with log management tools (ELK stack, Loki, Fluentd, OpenTelemetry).
• Experience working with multiple data sources, including relational (PostgreSQL) and non-relational (Redis, Elasticsearch) databases
• Experience with containerization (Docker, Kubernetes) and cloud platforms (AWS/GCP).
• Understanding of security best practices in backend development.

Nice-to-Have:

• Experience with functional programming in Java or Scala.
• Familiarity with distributed tracing (e.g., Jaeger, Zipkin) for microservices.
• Knowledge of cloud-native architectures and serverless frameworks.
• Exposure to message queues and event sourcing.

Why Join Flamingo?

• High-impact role: As a back-end engineer, your contributions will directly shape Flamingo’s product and technology.
• Ownership & Equity: Competitive compensation, including significant equity in an early-stage, high-growth startup.
• Innovative Tech Stack: Work with cutting-edge open-source technologies in AI, automation, and security.
• Remote-first Culture: Flexibility to work from anywhere while collaborating with a top-tier team.
• Mission-Driven Company: Join a team passionate about disrupting the MSP industry and making enterprise-grade security and IT automation accessible to all.

We are looking for a Technical Lead / Lead Backend Developer (.NET) to join our growing team, working on a long-term engagement on an enterprise SaaS project specializing in Microsoft 365 governance.

DARLY SOLUTIONS is an international software development company delivering custom solutions across FinTech, MedTech, SaaS, AI, and other industries. Since 2018, we've successfully delivered 250+ projects for clients worldwide. 

Requirements:

• Strong backend engineering background in .NET / C#
• Proven leadership / team lead experience - able to guide and support a team of senior developers, not just strong individual technical skills
• Real, hands-on experience with the Microsoft ecosystem: Microsoft 365, Microsoft Graph, SharePoint, Microsoft Teams, Azure
• Experience working with GitHub-based workflows
• Experience building or maintaining complex B2B SaaS platforms
• Strong sense of responsibility and proactivity
• Comfortable working directly with engineering leadership on the project side
• Open-minded and receptive to feedback, collaborative and non-defensive in working style
• B2 English 
   

Your key accountabilities and responsibilities will include:

• Lead and mentor a team of 2 senior backend developers
• Structure and prioritize backend engineering work, review technical decisions and architecture
• Act as the main technical point of contact for the project's Head of Engineering / Engineering Manager
• Drive backend development for complex B2B SaaS features: API integrations, automation, rule-based systems, admin dashboards, analytics/reporting, access control and audit logging
• Contribute hands-on to backend development as needed
• Help the team integrate smoothly into the project's existing engineering workflow and product development process
• Communicate progress, risks, and technical decisions clearly to project stakeholders

Will be a plus:

• Experience with SharePoint or Teams customizations and compliance/governance tooling
• Experience working in outsourcing/outstaffing engagements with European clients
   

If you have what we are looking for and would love to join our Darly team, we want to hear from you!

We are looking for a Senior Backend Developer (.NET) to join our growing team, working on a long-term engagement on an enterprise SaaS project specializing in Microsoft 365 governance.

DARLY SOLUTIONS is an international software development company delivering custom solutions across FinTech, MedTech, SaaS, AI, and other industries. Since 2018, we've successfully delivered 250+ projects for clients worldwide. 

Requirements:

• 4-5+ years of commercial backend development experience
• Strong, independent backend engineering skills in .NET / C#
• Real, hands-on experience with the Microsoft ecosystem: Microsoft 365, Microsoft Graph, SharePoint, Microsoft Teams, Azure
• Experience working with GitHub-based workflows
• Experience building or maintaining complex B2B SaaS platforms
• Strong sense of responsibility and proactivity
• Able to take ownership of tasks and move them forward with minimal guidance
• Open-minded and receptive to feedback, collaborative and non-defensive in working style

• B2 English 

   

Your key accountabilities and responsibilities will include:

• Take ownership of backend tickets and move them forward independently
• Contribute to ongoing product development, not just isolated task execution
• Build and maintain backend features for a complex B2B SaaS platform: API integrations, automation, rule-based systems, admin dashboards, analytics/reporting, access control, audit logs, and compliance/governance workflows
• Work closely with the Technical Lead and the rest of the engineering team

• Integrate into the project's existing engineering workflow and contribute to long-term product evolution

   

Will be a plus:

• Experience with SharePoint or Teams customizations and compliance/governance tooling

• Experience working in outsourcing/outstaffing engagements with European clients

   

If you have what we are looking for and would love to join our Darly team, we want to hear from you!

Job Description

• Strong Python: 4+ years of professional experience in Python development
• 5 years experience in Object Oriented development 
• Proficiency with Python and common libraries (e.g., requests, asyncio, SQLAlchemy, FastAPI/Django/Flask depending on the stack)
• Passion for open source development and a community mindset
• Proficiency with Git workflows (forking, pull requests, code reviews)
• Understanding of open‑source licenses and contribution etiquette
• Understanding of Kubernetes fundamentals (pods, deployments, services, config maps, secrets) and familiarity with containerization (Docker)
• Strong SQL querying and optimization skills and familiarity with MariaDB‑specific features (e.g., storage engines, replication options)
• Background in performance optimization or distributed systems
• Knowledge of industry standard source control systems
• Proficiency in Team Foundation Server and Visual Studio is preferred
• Experience with industry standard communication protocols; REST. JSON, XML, and SOAP
• Experience with Agile software development methodologies
• Azure experience is preferred
• Good understanding of SDLC process, version control, code review, continuous integration and automated deployment tools.
• Experience working on large-scale, production-grade projects.
• Strong background with CI/CD methodology.
• B.Sc in Computer Science is an advantage.
• Advanced level of English

Job Responsibilities

• You will be part of a team responsible for building the Royalty management solution 
• Participate in all phases of managing the Application Lifecycle Management: requirements analysis, development, testing, and implementation. Participate in technical logic and design discussions
• Investigate and resolve bugs, performance issues, and security concerns
• Create, maintain, and present technical documentation to different audiences and levels
• Perform resource, technical and risk assessments
• Work with other development, architecture, and product development teams to ensure delivery of product
• Support release processes, versioning, and dependency management
• Engage constructively with contributors for clarification and/or improvements
• Assist in the timely completion of assigned development projects
• Prepare required documentation, including project plans, software program, and user documentation
• Assist in the estimation of time for development projects
• Being the main contact point for the US based client team
• Provide technical guideline to the local team
• Interview new candidates to join the team
  
   

Department/Project Description

        Our client is a performance rights organization in the United States. It collects blanket license fees from businesses that use music, entitling those businesses to play or sync any songs from the client's repertoire of over 22.4 million musical works. On a regular basis, the client distributes the money to songwriters, composers, and music publishers as royalties to those members whose works have been performed

ProfiSea Labs is building an AI-powered multi-cloud management platform that helps CloudOps engineers and IT leaders optimize cloud usage, cut costs, and automate complex workflows through next-generation intelligence.

What you'll do:

Design and implement features in Python-based backend services powering the Uniskai platform
Develop and maintain a Kubernetes agent written in Golang
Integrate cloud infrastructure data with the Uniskai FinOps platform
Work with Kubernetes APIs, CRDs, controllers, and cluster-level components
Build reliable, observable, production-ready services
Collaborate with product and infrastructure engineers to ship real features, not demos


What we're looking for:

1+ year of professional software development experience
Strong proficiency in Python — this is your primary language on the job
Familiarity with Golang — at least basic knowledge is preferred; if you're not there yet, a genuine willingness to learn is a must
Basic understanding of Kubernetes concepts — hands-on experience is a plus, but what matters most is a genuine curiosity and readiness to learn
Ability to read, understand, and improve existing codebases
Pragmatic mindset: you care about things working in production, not just passing in CI


Nice to have (not required):

Experience building Kubernetes operators or agents
Familiarity with cloud platforms (AWS, GCP, Azure)
Exposure to FinOps, cost optimization, or observability tools


What we offer:

Work on real infrastructure software used in production
A team that values engineering clarity over buzzwords
Opportunity to deepen expertise in Kubernetes and cloud internals
Clear career growth path
Medical insurance
Sport compensation
Competitive compensation based on experience


If you want to understand how Kubernetes actually works under the hood — and not just deploy YAML — this role is for you.