Jobs Backend

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.
• 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 Senior Python/Django Architect to join a long-term project for a Norwegian client in the financial sector.

👥 Team: 10 people — Backend, Frontend, Full-Stack, BA, UX & DevOps

📍 Location: Poland / CET

⏰ Engagement: Full-time, starting in September

✈️ Occasional travel to Norway  may be possible

💼 Project

A specialized cloud-based practice management and workflow platform for accounting firms and financial professionals. The solution centralizes task management, client communication and compliance processes such as AML/KYC.

👤 What we're looking for

A strongly technical Architect who can not only design solutions, but also challenge existing approaches, advise the client, set technical direction and solve complex problems.

🎯 Key requirements:

• Strong expertise in Python & Django (4.2)

• Django REST Framework, Django Filters, Celery

• Django ORM & data modelling

• Strong PostgreSQL & Redis experience

• Proven experience with performance & scalability

• Experience scaling existing Django systems without a "big-bang rewrite"

• Technical & architecture assessments

• Database optimisation

• Experience designing architecture for complex systems

• Good understanding of microservices

• AWS / AWS Fargate

• CI/CD — CircleCI is a plus

• Git / GitHub

• Strong communication with technical & non-technical stakeholders

• Ability to explain architectural decisions, trade-offs and risks

• Client-facing / technical advisory experience

• English C1

🛠 Tech stack:

Python · Django 4.2 · DRF · Django Filters · Celery · PostgreSQL · Redis · AWS Fargate · Angular 21 · TypeScript · RxJS · CircleCI · GitHub

📌 Responsibilities:

• Define and evolve the overall system architecture

• Translate business needs into technical direction

• Drive architectural decisions and technical priorities

• Identify risks and scalability challenges

• Guide engineering teams and provide technical mentorship

• Solve complex technical problems

• Contribute to technical roadmaps

• Work closely with the client and other stakeholders

• Ensure scalability, consistency and quality across the system

Creatio is an AI CRM and workflow platform where people and AI agents work together - with no limits on users, agents, or scale. We help midsize and large organizations run customer workflows in the AI era. With a global team and a large ecosystem of partners, Creatio serves thousands of customers in over 100 countries and automates tens of millions of workflows daily. Genuine care for our clients and partners is at the heart of our DNA.

We’re proud to be recognized by top industry analysts as a Leader and Strong Performer in multiple Gartner and Forrester reports.

In 2025, Creatio was named to Inc.’s Best Workplaces list, recognizing our commitment to employee wellbeing and a strong workplace culture.

Who We’re Looking For

We are looking for an AI Software Engineer to design, build, evaluate, and operate AI-powered capabilities within the Creatio platform.

You will join the AI teams building the agent platform that enables AI agents to safely perform real work in the product: call tools and APIs, read and write data, maintain context, follow permissions, and escalate to humans when needed.

The team also owns the core infrastructure for testing, monitoring, logging, observability, and cost/performance control, ensuring AI agents are reliable, scalable, secure, and production-ready.

This role combines strong software engineering expertise with hands-on AI engineering experience. You will work on enterprise-grade AI solutions, including assistants, copilots, knowledge systems, semantic search, RAG-based capabilities, and agentic workflows.

Responsibilities:

• Design and implement AI-powered product features within the Creatio platform.
• Build assistants, copilots, agentic workflows, knowledge systems, RAG, and semantic search capabilities.
• Integrate LLM providers, tools, enterprise data sources, and MCP-based solutions.
• Develop and maintain backend services using C# and .NET.
• Build evaluation frameworks, quality gates, and observability practices for AI solutions.
• Monitor and improve the quality, latency, cost, reliability, and security of AI capabilities.
• Apply AI coding assistants and engineering agents as part of the daily development workflow.

Requirements:

• Strong experience with C# and .NET.
• Hands-on experience with LLMs, prompt engineering, function calling, and structured outputs.
• Understanding of agent architectures, MCP, RAG, embeddings, vector search, and semantic search.
• Experience with AI evaluation, observability, security, and Responsible AI practices.
• Solid understanding of API design, distributed systems, and software architecture.
• Experience with SQL databases, testing, CI/CD, and cloud-native development.
• DevOps fundamentals, including Docker containerization and basic Kubernetes knowledge.
• Strong knowledge of engineering best practices and production-grade software development.

What to expect from us:

• Growth & Development: Clear career paths, mentorship opportunities, and access to continuous learning to help you reach your full potential.
• Flexibility & Well-Being: We provide flexible work arrangements and initiatives that empower you to manage your schedule effectively, stay productive, and thrive both personally and professionally.
• Recognition & Impact: A culture that celebrates achievements, values your ideas, and empowers you to make real contributions from day one.
• Innovative Culture: Be part of a company that embraces new ideas, modern technologies, and bold thinking to stay ahead of the curve.
• Benefits & Rewards Package: We provide competitive compensation and benefits designed to support you and your family. Our rewards approach goes beyond salary, recognizing your contributions and commitment. The exact package may vary depending on your country of residence and employment type.

ScenAI Data Science Inc

We are a U.S.-based fintech startup operating in the investment and financial services space. Our distributed teams work across Poland, the United States, and Ireland, collaborating on technology-driven solutions related to stocks and investments.

Security, compliance, and the responsible handling of sensitive financial data are central to how we operate, as we build scalable products in a regulated environment.

General

❖ 4–10 years in automation engineering

❖ Strong C# and OOP expertise

❖ Experience with Windows UI Automation (UIA2/UIA3)

❖ Prior hands-on with Silk Test (mandatory)

❖ Experience automating DevExpress WinForms apps

Legacy Experience (Critical)

❖ Experience working on .NET Framework 3.5 / 4.x applications

❖ Automation in thick-client enterprise systems

❖ Handling unstable UI identifiers

❖ Working with limited documentation

Framework & Design

❖ Build frameworks from scratch

❖ Implement POM / Component Object Model

❖ Logging, retry policies, custom wait strategies

Initial contract duration: 9 months with the possibility of extension based on the skill set

Hourly remuneration: 28-35 usd/hour

Engagement: full time

Time zone: Poland

Working language: English

Please read carefully before applying:

The client is building a product in the bank/investment/brokerage systems niche, and their investors have strict security and compliance requirements, where every person will go through a background check.

Why Poland?

For background check — you must be a taxpayer in Poland for 2+ years.

Our startup is growing fast, and we already have real clients using and testing the product. That is why we are looking for a strong Python Backend Developer with practical experience in AI solutions, agents development, vector databases, graph databases who wants to join us at an early stage and become part of building a real technology company.

English B1-B2 is required, as English is the main language of communication within our international team.
You will not be joining the project alone — our development team already includes two Middle Python Developers, one Senior Python Developer, one Frontend Developer. You will work closely with them, share technical decisions, and help us continue building and improving the product together.
 

What We Are Looking For

• Strong practical experience with Python backend development
• Hands-on experience with vector databases
• Experience with graph databases / knowledge graphs
• Practical experience integrating AI / LLM / ML solutions into real products
• Good understanding of backend architecture, APIs, databases, and data processing
• English B1–B2

What We Offer

• Full remote work
• Flexible schedule
• Opportunity to join an active startup at an early stage
• Real influence on product architecture and technical decisions
• Small team without unnecessary bureaucracy
• Direct impact on the future of the company
• Opportunity to receive company equity

Important

We are looking not just for a developer, but for an engineer who has already worked with AI and modern data technologies in practice.

When applying, please include examples of real projects where you worked with Python backend development, AI integrations, vector or graph databases, knowledge graphs, RAG, or other data-intensive systems.

We are especially interested in what you personally built and what technical problems you solved.

Overview: Algoseek is seeking a proactive, technically adept Algorithmic Support Engineer to provide first-line support to our institutional clients for our intraday market data feeds for quantitative and algorithmic trading data systems. This role bridges finance, market data and technology — requiring both hands-on technical troubleshooting and a deep understanding of trading concepts, market data, and systematic strategies.

This position serves as an entry point into Algoseek, offering strong performers a pathway to grow into development, data, or quantitative analysis roles.

Role Details:

• Location: 100% Remote (Global Team)
• Job Type: Full-time
• Compensation: Competitive with bonuses and education/technical allowance

Responsibilities:

• Provide responsive technical and functional support for Algoseek’s market data clients using real-time intraday datasets.
• Diagnose and resolve incidents related to market data feeds, APIs, and algorithmic trading infrastructure.
• Communicate complex issues clearly to both technical and non-technical users.
• Collaborate closely with developers, data engineers, and product leads to escalate and troubleshoot system issues.
• Analyze  reported data anomalies and communicate with client.
• Maintain accurate documentation of support procedures, recurring issues, and resolution steps.
• Identify improvement areas and propose automation or analytics-driven enhancements to support operations.

Essential Requirements:

• Strong grasp of systematic, algorithmic, and quantitative trading workflows (ideally intraday).
• Knowledge of US equities, options, or futures markets OR experience with cryptocurrencies / digital assets trading environments.
• Hands-on technical ability: scripting in Python, familiarity with SQL / data analysis.
• Excellent English communication skills, written and spoken.
• Analytical mindset; strong problem-solving and troubleshooting ability.
• Demonstrated curiosity and motivation to learn — this role suits those aiming to move beyond support into deeper technical or quantitative tracks.

Desirable Requirements:

• Experience supporting trading systems, data platforms, or market data vendors.
• Exposure to FIX protocol, market data APIs, or cloud environments (AWS preferred).
• Bachelor’s degree in Computer Science, Engineering, Finance, or a related field.

Work Hours:

• 100% Remote
• Overlap required with US EST morning hours (typically 9 AM – 2 PM EST)

What Success Looks Like

• Accurately resolves 90% of first-level support tickets without escalation.
• Demonstrates consistent improvement in understanding client trading workflows.
• Proactively proposes or implements process improvements that enhance system reliability and client satisfaction.

Why Join Algoseek?

• Work with a leading provider of high-quality market data and trading solutions.
• Collaborate with world-class engineers, researchers, and financial experts.
• Drive innovation in automated trading systems and distributed market data solutions.
• Be part of a remote-first, globally distributed team with a culture of ownership and excellence.

What We Offer:

• Competitive monthly compensation aligned with experience and responsibilities.
• A 100% remote work setup with flexibility for work-life balance.
• An opportunity to contribute to the growth of an innovative, fast-paced market data company.
• Professional development opportunities to help you grow into higher leadership roles.

If you’re a skilled finance professional ready to take the next step in your career, we’d love to hear from you!

Job Title:

Block-Builder Engineer

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:

An advanced block construction platform operating on the Ethereum mainnet that processes order flow, transaction bundles, and submits finalized blocks through relay networks in real time. It addresses neutral and efficient block building to unlock new decentralized finance capabilities, including intrablock lending and execution extensions. The system handles high-throughput data pipelines and strict latency requirements, backed by comprehensive observability and analytics to drive iterative improvements based on live production metrics. Strong engineers are essential to maintain system health under real-time load, verify data-driven hypotheses, and innovate on core protocol logic.

About the Role:

The Block-Builder Engineer will join an experienced team in Kraków or Warsaw to develop and maintain a next-generation Ethereum block construction system. You will own pipeline components that ingest order flow and transaction bundles, manage relay submission paths, and ensure stable performance under real-time load. Your work will include building and refining observability platforms, conducting controlled A/B experiments, and driving reliability improvements such as panic mitigation and latency regression detection. As you ramp, you will contribute to optimization-driven block building logic, on-chain intrablock lending protocols, and an execution extension, gaining autonomy and deep technical ownership across the core stack.

Key Responsibilities:

- Integrate and process order-flow ingestion, bundle and transaction handling, back-pressure management, and reintegration of data for block inputs.

- Develop and maintain relay submission paths to ensure end-to-end block delivery under production load.

- Build and enhance telemetry and dashboards using Grafana, Prometheus, Loki and SQL to provide trusted observability.

- Diagnose and correct measurement issues—broken counters, misleading dashboards, and erroneous denominators—to maintain metric accuracy.

- Design, execute and analyze controlled A/B experiments in production, reporting findings objectively, including inconclusive results.

- Identify and resolve system panics, dropped messages, and latency regressions, with automated tests to prevent recurrence.

- Optimize data pipelines and processing systems for high-throughput, low-latency performance.

- Contribute to the development of intrablock lending protocols and associated trusted-execution components.

- Collaborate on an execution extension (BEX) and future protocol and exchange-layer enhancements.

Required Competence and Skills:

- 2–4 years of professional software engineering experience shipping and operating production systems.

- Minimum 2 years working on Ethereum or other EVM-compatible blockchains.

- Proficiency in Rust or strong systems experience in Go, C++ or Java with eagerness to adopt Rust.

- Solid understanding of concurrent and real-time code within large, existing codebases.

- Strong SQL skills and practical experience with Python for data analysis and tooling.

- Familiarity with monitoring and analytics tooling and a drive to ensure metric correctness.

- Rigorous engineering habits, including comprehensive testing and clear distinction between verified and assumed behavior.

- Data-driven mindset with a habit of querying logs and databases to validate change impact.

Nice to Have:

- Exposure to Ethereum block-building protocols (PBS/MEV), smart contract interactions, or trading systems.

- Experience with high-throughput data pipelines, time-series databases, or large-scale analytics.

- Familiarity with Ethereum client internals (reth, geth, revm) or deploying services on Kubernetes and Docker.

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.

Про проєкт

Шукаємо спеціаліста, який розуміється на browser security, fingerprinting, anti-fraud та аналізі browser environment.

Основний напрямок роботи — дослідження технічних параметрів браузера, мережевого оточення та сигналів, які використовуються сучасними системами для аналізу та класифікації веб-сесій.

Основні задачі

• Аналіз browser environment та browser fingerprint.
• Дослідження параметрів, які доступні веб-сайтам та anti-fraud системам.
• Аналіз browser detection та bot detection mechanisms.
• Робота з JavaScript Browser APIs.
• Дослідження та runtime instrumentation JavaScript у тестовому середовищі.
• Аналіз User-Agent, Client Hints, Referer, Headers та Cookies.
• Аналіз WebGL, Canvas, WebRTC, WebGPU та інших browser signals.
• Аналіз IP, Geo, ASN, Proxy та network characteristics.
• Робота з HTTP/HTTPS та TLS.
• Аналіз результатів anti-fraud та fingerprinting систем.
• Пошук невідповідностей між browser, device та network parameters.
• Тестування різних browser environments.
• Взаємодія з C++ / Chromium developer для аналізу та вирішення browser-level задач.
• Інтеграція та тестування зовнішніх diagnostic / anti-fraud systems.

Вимоги

• Від 2 років практичного досвіду роботи з anti-detect browsers.
• Від 2 років практичного досвіду роботи з browser fingerprinting / browser detection.
• Від 2 років досвіду роботи з browser automation.
• Впевнене знання JavaScript.
• Глибоке розуміння Browser APIs.
• Практичний досвід роботи з browser environment та fingerprinting.
• Розуміння User-Agent, Client Hints, Referer, Headers, Cookies.
• Розуміння WebGL, Canvas, WebRTC, WebGPU.
• Розуміння HTTP/HTTPS, TLS та browser networking.
• Досвід роботи з Proxy, SOCKS5 / HTTP Proxy.
• Розуміння IP / Geo / ASN та network characteristics.

• Здатність аналізувати складні browser/network signals та знаходити невідповідності.
   

  Ми пропонуємо

• Віддалена робота.
• Довгостроковий проєкт з цікавими технічними задачами.
• Конкурентна заробітна плата.
• Оплачувана відпустка та лікарняні.
• Мінімум бюрократії та максимум технічної свободи.

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.
 

Our client’s product is a cloud-based financial planning and analysis (FP&A) platform designed for SMBs, transforming manual monthly and quarterly reporting into automated, scalable processes. Solution connects to organizational systems such as ERP, CRM, HRIS, and complex Excel files, consolidating all data into a single cloud-based database. Product automates critical financial transformations including FX conversions, eliminations, hierarchies, financial adjustments, and more while allowing end-users to continue working in Excel as they always have. Serving primarily the US market, our client is experiencing strong and sustained growth. This is an exciting opportunity to lead a multidisciplinary R&D team and work on a cutting-edge SaaS product at scale.

Key Requirements:

🔹Strong Python and system design fundamentals — enough to make sound technical calls and catch when the AI is wrong;
🔹Experience delivering software from idea to production;
🔹Excellent system design and architectural thinking;
🔹Ability to make technical decisions independently and take ownership of outcomes;
🔹Experience working with AI coding tools such as Claude Code, Cursor, Codex, GitHub Copilot, or similar;
🔹Strong product mindset and the ability to balance technical and business priorities;
🔹Comfortable working in ambiguous, fast-moving environments;
🔹Excellent communication and collaboration skills;
🔹Ability to review, challenge, and improve AI-generated output rather than relying on it blindly;
🔹Experience building AI-native development workflows;
🔹English – Upper-Intermediate or higher.

Will be plus:

🔹Django experience;
🔹Experience with modern frontend technologies, QA automation, or full-stack environments;
🔹Experience working in product companies or startups.

What you will do:

🔹Own features end-to-end, from initial requirements to production and monitoring;
🔹Partner with Product to turn requirements into clear execution plans — Product owns the what, you own the how;
🔹Orchestrate AI agents across development, QA, and automation;
🔹Review, validate, and improve AI-generated code and solutions;
🔹Make architectural decisions, define data models, and optimize system performance;
🔹Ensure high quality throughout the entire delivery lifecycle;
🔹Own a feature area while contributing across other areas when needed;
🔹Collaborate directly with engineering and product teams to continuously improve delivery processes.

Interview stages:
 

🔹 HR Interview;
🔹 Tech interview with Team Lead;
🔹 Interview with PM;
🔹 Interview with VP R&D (optional);
🔹 Reference check;
🔹 Offer.

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.

From day one, you’ll get:

🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer. You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

We’re looking for an experienced Senior Backend Developer to join our engineering team and take part in building reliable, scalable solutions for international clients.
 

If you enjoy solving complex technical problems, thinking about architecture beyond individual features, and working with a team that values ownership and quality, this role could be a great fit.
 

🛠️ Technology

• Backend: .NET
• Databases: PostgreSQL, MySQL, Redis
• Additional: Docker, CI/CD, cloud technologies
• Nice to have: NoSQL, Node.js

🔧 Your responsibilities

• Develop and maintain robust backend applications and APIs
• Contribute to technical and architectural decisions
• Build solutions that can scale as products and user needs grow
• Improve existing codebases through refactoring and optimization
• Ensure the code you deliver is readable, maintainable, and properly tested
• Take part in code reviews and technical discussions
• Work closely with frontend engineers, designers, and project/product teams
• Support the team in planning and delivering new functionality
   

🎯 What we’re looking for

• 5+ years of professional experience with .NET backend development
• Strong knowledge of relational databases, particularly PostgreSQL and MySQL
• Good understanding of software architecture, design patterns, and engineering best practices
• Practical experience with Docker, CI/CD, and cloud environments
• Ability to take ownership of tasks and work effectively with limited supervision
• Strong communication and collaboration skills in a remote environment
• Good command of English, both written and spoken

• Experience with NoSQL databases or Node.js would be an advantage

   

🌟 What we offer

• Competitive compensation based on your experience and expertise
• 21 working days of paid vacation + Polish national holidays
• 14 paid sick-leave days
• Private medical care for employees residing in Poland
• Company events and team activities
• A friendly environment with experienced professionals
• The opportunity to work on a variety of international projects and solve different technical challenges

Why this role exists:

This role exists to design, build, and maintain backend services across the Casino platform — bonus and promotional mechanics, wallet and transaction flows, game launch and catalog, and game provider integrations — ensuring reliability, correctness, and performance under high load.

What you’ll drive:

Casino platform services

• Design and develop Spring Boot microservices across the casino domain: bonus processing, game launch, lobby and game catalog management.
• Implement and evolve promotional mechanics end-to-end — from bonus crediting and wagering logic to expiry and settlement — with correctness guarantees on real money.
• Integrate third-party game providers, game launch, wallet callbacks (bet/win/refund), provider-side bonus features.
• Build and evolve REST APIs consumed by internal services and external providers, including request signing, authentication, and API versioning.

Reliability & correctness

• Ensure correctness of real-money transaction and bonus flows — idempotency, retries, timeouts, graceful degradation of downstream calls.
• Work with Redis for caching and session state; tune service performance under production load.
• Own observability: metrics (Micrometer/Prometheus, Grafana dashboards), structured logging, alerting.

Quality & delivery

• Write and maintain unit, integration, and functional tests (JUnit 5, Testcontainers).
• Ship via GitLab CI to Kubernetes; participate in code review and incident investigation.

What makes you a GR8 fit:

Must-have

• 5+ years of experience in back end.
• Commercial experience with strong proficiency in Java (17+) and Spring Boot 3.x (Web, Security, Data, Actuator).
• Experience building business-critical domain logic (payments, bonuses, billing, or similar money-adjacent flows).
• Solid experience integrating third-party REST APIs and designing your own.
• Understanding of distributed systems basics: idempotency, consistency, timeouts, retries, caching.
• Experience with SQL and at least one NoSQL store (Redis, Cassandra, or Elasticsearch).
• Upper-intermediate or higher level of English.

Nice-to-have

• Scala experience (parts of our wallet platform run on Scala / Play / Akka).
• Experience with Kafka and event-driven architectures (some of our services use Spring Cloud Stream).
• Experience running services on Kubernetes; familiarity with GitLab CI.
• Familiarity with Prometheus and Grafana.
• iGaming / betting domain experience.
•  

Job Title:  Principal Software Developer/Architect (C#)
Location: Galway, Ireland

Work model: Hybrid, 3 days in-office minimum; additional occasional/or regular in-office days may be required to support your team.
Relocation and visa sponsorship assistance are available for qualified successful candidates. 

Who We Are

At SOTI, we are committed to delivering best-in-class mobile and IoT device management solutions. We are looking for out-of-the-box thinkers that appreciate the art of creating great software.

To us, being visionary is more important than doing things the way they’ve always been done.  

What We’re Looking For

Our people are our most important resource. For us to continue to develop new innovations and achieve the impossible, we are looking for out-of-the-box thinkers that appreciate the art of creating great software. 

As a Principal Developer in the Location Services team, you will be responsible for defining and communicating the technical vision for the future architecture of the Signal and Location Services and other SOTI applications together with Software Architect. You are an excellent coder, helping development teams to make our vision a reality, designing and building low friction APIs, highly responsive web UIs and the backend to support them. This is an outstanding opportunity where you will be responsible for owning the overall architecture of the Location Services and their integration with the SOTI ONE platform. You are passionate about modern technology, and you are driven by your energy to identify and resolve complex problems with an aptitude for learning new technologies.

What’s in it for you?

The People - From our humble origins in our founder’s basement, to our industry leading position today, SOTI has worked hard to foster a company culture that we can all believe in. A culture that emphasizes personal growth, continuous innovation and fun.

The Growth - Our environment fosters new ideas, fresh perspectives, and the ability to take them over the goal line. SOTI is a fast-paced environment with a global reach that encourages you to make your mark and be part of something big!

The Technology - You’ll get the chance to work with leading edge technologies and take on complex and interesting projects, as part of highly collaborative and agile teams. You will work alongside SOTI’s partners which include leading tech giants that will keep you on the cusp of emerging technologies.

What You’ll Do

• Architectural design of SOTI’s products; hands-on code and design major components of the architecture, including APIs, services, user interface, and middleware
• Own and drive non-functional features (performance, security etc.) of the product, bring them from ideation to completion
• Advocate, document, and enforce best engineering practices, design and implementation principles, and coding standards; drive high quality in all phases of software development.
• Assist development teams with design review; suggest innovative solutions targeting large-scale performance, security, and fast delivery; develop prototypes and proof of concepts; enforce compliance with design and security.
• Identify technical debt; assist development teams with technical debt elimination.
• Collaborate with senior management, product, support, and other technical teams, collect requirements, define and communicate product technical strategy, architecture, and design.
• Create and maintain an architecture roadmap, principles, policies, and procedures, a repository of design artefacts (solution architecture, high- and low-level designs)
• Help in growing technical expertise in SOTI; mentor and educate developers as well as quality assurance specialists
• Proactively keep a tab on emerging technologies, evangelize and lead adoption throughout the teams
• Have fun, with all of the above!

Experience You’ll Bring

• Expertise in Computer Science with an excellent understanding of math, algorithms, data structures, design patterns and software architecture, and the ability to understand the logic behind the relationships within programs themselves. 
• 10+ years of combined experience architecting, designing, and implementing multi-tiered software applications
• Strong experience in programming languages such as .NET, JavaScript, Angular, Node JS, MVC etc.
• Excellent hands-on knowledge of relational data models, SQL (MS SQL server) and NoSQL Databases
• Excellent knowledge and experience with ElasticSearch
• Good knowledge of designing and deploying applications in AWS or Azure
• Good knowledge of CI/CD process and integration of SonarCube for code coverage
• Experience working on complex business problems and identification of technical solutions that are flexible and creative
• Highly proficient in software architecture patterns and documentation
• Problem-solving skills with attention to details
• Deep experience in agile software development life cycle, practices, and tools (coding standards, code reviews, source code management, build processes, QA)
• You are a self-starter with a high degree of initiative, a can-do attitude and a positive mindset
• Strong education in Computer Science/Math is preferred

About the SOTI Galway Office

Boasting our growing Research and Development team in Galway, Ireland, we are involved in groundbreaking mobility-focused research, to provide innovative mobile device solutions to our enterprise clients around the world. We are in the heart of Galway City next to the Cathedral and National University of Ireland Galway.

Known as a place of innovation and a growing technology hub, Galway is also an ideal place for families, while keeping young professionals entertained. Whether you are interested in the best restaurants, cozy pubs, festivals, fresh produce or the beautiful sights and landscapes, there is always something to do in Galway.

Enjoy fishing, surfing or hiking, take a day trip to the Aran Islands, or perhaps indulge in the rich cultural heritage and explore the many historical sites in the area. The city’s booming economy, great schools, significantly lower cost of living compared to Dublin, and fun and friendly atmosphere make Galway a great place to live and work.

Relocating from abroad?

Moving to a new country can be exciting and challenging. We have prepared a list of resources to ease your transition to Ireland, and our People & Culture Team will always be available to you for support. Visa sponsorship and relocation assistance are available to successful candidates.

Who we are  

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. Since 1997, we have been streamlining data workflows for professionals and teams with our intuitive and efficient software products. We're committed to enhancing the experience of our customers across the globe by minimizing data-related tasks and enabling them to focus on more inspiring goals.  

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. Whether it's global 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  

Connectivity — An enterprise B2B product at the intersection of AI and corporate data infrastructure. It enables organizations to securely connect modern AI agents and LLM-based assistants to their internal data sources — relational databases, data warehouses, and SaaS systems — while maintaining strict governance, access control, and auditability. The product is deployed on-premise within the customer’s infrastructure, which makes security, compliance, and admin experience first-class concerns alongside end-user value.

Your future team of professionals 

You will be part of the Connectivity team and work with highly motivated professionals who are passionate about the project. You will collaborate with other .NET developers,  Product Owner, QA, and Support team. 

Impact you will make 

Product Management  

• Work closely with stakeholders to document business requirements, define user stories, and contribute to planning and execution  
• Collaborate with team members to ensure seamless implementation of UI/UX functionality, aligning with product vision and user needs  
• Verify requirements provided by a product management team and/or other stakeholders  
• Take part in preparing and prioritization of refactoring plans  
• Provide L3 support for clients (if applicable) 

Project Management  

• Decompose complex tasks into achievable work items  
• Interact with other teams involved in product development to optimize processes  
• Keep sprint workloads in an actual state 

People Management  

• Conduct coaching and mentoring activities to fulfill technical leadership for team members  
• Take part in technical interviews 

Software Development  

• Implement features of any level of complexity  
• Design tests (unit, integration, etc.)  
• Foster high quality standards for software development among team members by applying best practices  
• Conduct research while accepting features for implementation, decompose features into subtasks, providing accurate estimates  
• In collaboration with Head of Engineering and Solution Architect, design and implement architectural solutions within a project  
• Deliver features for testing and provide consultations to QA team during feature verification  
• Conduct code reviews 

Skills we are looking for 

• Deep knowledge and understanding of .NET Framework/.NET Core/.NET and C# 
• Deep knowledge and understanding of OOP and OOD (including SOLID and GoF design patterns)  
• Deep knowledge and understanding of data structures  
• Good algorithmic basis  
• Experience with relational databases and SQL  
• Experience with VCS (Git preferred)  
• Knowledge and understanding of issues lifecycle  
• Knowledge of approaches and methods of task estimation and decomposition  
• Experience with ALM systems (Jira preferred)  
• Experience with knowledge bases (Confluence preferred)  
• Understanding of basic CI/CD principles, experience with CI systems (Jenkins preferred)  
• Understanding of SCRUM principles and values  
• Experience with Entity Framework 
• Experience with ADO.NET  
• Essential experience with WinForms, preferred expirience with DevExpress WinForms components 
• Preferred expirience with SSIS, COM interop, unmanaged code interop 

Benefits you get 

Maintain your work-life balance 

• Take control of your workday with our flexible schedule. 
• 19 days of annual vacation granted on a pro-rata basis. 
• No overtime required. 

Hybrid/remote 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 help promote the global visibility of exceptional Ukrainian products from anywhere in the world. 

Stay healthy 

• Comprehensive medical insurance from a leading Ukrainian provider, including a wide range of services and special programs for relatives, and special options for those who live abroad. 
• 15 working days of sick leave per year – because your health is our priority. 

Grow with us 

• In-house English courses to increase your proficiency through our online courses and speaking clubs with a native speaker. 
• Online learning activities, including workshops, lectures, and webinars to enhance your leadership, management, and self-awareness skills. 
• Experience exchange with our team of professionals who eagerly share their deep expertise across various fields. 
• Opportunities for 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! This means that 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 assistance. 

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, constantly evolve, and practice regular knowledge sharing. 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 

What this is about
 

We are a fast-growing software house looking for a mid-level GoLang Software Engineer to join a fully remote team.

Your main focus will be the backend: designing and building reliable services, APIs, and data flows, improving the architecture and performance of our platform, and turning product requirements into robust systems that users rely on every day.

At the same time, you will not work in isolation from the rest of the stack. You will collaborate closely with the frontend and infrastructure side, and when needed you may also touch deployment, databases, and other parts of the platform. We value engineers who understand how the product works end to end, even if their strongest area is backend.

If you enjoy building clean, maintainable systems, solving complex technical problems, and care about reliability, performance, and good software architecture, this position is for you.
 

How we think about AI
 

AI coding tools are part of our daily work, and we want them to be part of yours too. For us, they are a great way to:

• write faster the parts you already understand, while always reviewing, validating, and correcting what they produce
• reason through problems and test new solutions
• learn something new along the way

What we are not looking for is someone who pastes output they would not be able to understand or explain.

The tool speeds up the work, but your brain must remain the one making the decisions.
 

What you will do
 

• Develop and release new backend features from start to finish
• Design, build, and maintain reliable services and APIs in Go
• Work with databases, queues, caches, and other backend infrastructure
• Improve the performance, scalability, and reliability of existing services
• Collaborate closely with frontend and infrastructure engineers
• Write clean, well-tested, maintainable, and production-ready code
• Debug and troubleshoot issues across distributed systems
• Work with different stakeholders in an async-first environment
   

Who we are looking for

• At least 2 years of experience as a software engineer, preferably with a strong backend focus
• Experience with Go (Golang) is required
• Good understanding of backend development, REST APIs, databases, concurrency, distributed systems, and service-oriented architecture
• Familiarity with SQL and working with relational databases
• Ability to write clean, maintainable, and well-tested production code
• Comfortable debugging issues and reasoning about performance and reliability
• Independent thinking: AI is a tool, not a shortcut to avoid thinking
   

What we offer

• Fully remote work from anywhere in the European time zone
• Flexible hours, async-first culture, zero micromanagement
• Location-based benefits, where applicable

About FreySoft:

FreySoft is a team of IT professionals passionate about delivering meaningful digital transformations. Our expertise lies in project-based development, helping businesses across industries tackle complex challenges and achieve tangible results.

We foster a culture of ownership, flexibility, and initiative, ensuring that every team member has the opportunity to grow, contribute, and thrive. At FreySoft, people are our most valuable asset, and we empower them to make a real impact.

About the Role

This is not a traditional Tech Lead role focused on a single long-term project.

We’re looking for a Tech Lead —someone who can quickly join different client projects, establish engineering standards, lead development teams, and independently own technical decisions from day one.

Depending on business needs, you’ll either:

• lead a larger cross-functional engineering team on a strategic project;
• or oversee several smaller engineering teams simultaneously, helping each deliver successfully.

Every 4–6 months you may rotate to a new project, new domain, or even a different technology stack. We provide structured onboarding and expect experienced leaders who enjoy adapting quickly to new challenges.

What You’ll Do

• Own technical delivery for one or multiple client projects.
• Lead backend engineers through mentoring, code reviews, and engineering standards.
• Drive architectural decisions while balancing technical excellence with business needs.
• Communicate directly with client stakeholders without requiring day-to-day CTO involvement.
• Identify technical and delivery risks early and proactively mitigate them.
• Contribute to project estimations, architecture planning, and technical solution design.
• Stay hands-on with development when needed—review critical code, build prototypes, and resolve complex production issues.
• Help teams adopt AI tools responsibly while maintaining high engineering quality.

What We’re Looking For

Leadership

• Proven experience leading engineering teams in client-facing environments.
• Ability to take ownership instead of waiting for direction.
• Strong stakeholder communication and decision-making skills.
• Comfortable leading either one larger team or multiple smaller teams.
• Passion for mentoring engineers while maintaining high standards without micromanagement.

Technical Expertise

• Strong Kotlin and Spring Boot experience in production.
• Deep understanding of microservices architecture and API design.
• Experience with Kafka (including Kafka Connect), gRPC and Protobuf.
• Strong SQL skills with PostgreSQL, Yugabyte and jOOQ.
• Experience with Kubernetes, AWS, GCP and containerized environments.
• Strong debugging skills in distributed systems and high-load production environments.
• Ability to adapt to a new steck if needed

Nice to Have

• FinTech or Payments domain experience.
• Previous outsourcing or consulting background.
• Experience participating in pre-sales or technical discovery.
• Professional AWS or GCP certification.

Why Join FreySoft?

🌍 Work with international clients across different domains and modern technology stacks.

🚀 Every project brings new challenges instead of years of repetitive work.

🎯 Build your career toward Principal Engineer, Engineering Manager, or CTO-level leadership.

🤝 High level of ownership and trust—you’ll make decisions, not wait for approvals.

💡 AI-first engineering culture that values responsible use of modern development tools.

💰 Competitive compensation based on experience and impact.