Jobs

We are looking for a Frontend Developer to join a long-term international project in the insurance technology domain.

The platform serves multiple user groups and supports complex business processes through a modern web application. The engineering team already includes backend developers, cloud engineers, and a dedicated product designer. Your primary focus will be transforming high-fidelity Figma designs into scalable, production-ready user interfaces and delivering seamless user experiences across the platform.

This is a full-time engagement with the potential to expand as the project evolves.

Responsibilities

• Develop modern, responsive, and user-friendly web applications.
• Convert Figma designs into clean, maintainable, and scalable frontend solutions.
• Integrate frontend functionality with backend services and APIs.
• Build and support complex forms, workflows, and data-driven interfaces.
• Ensure consistency across the platform's UI, UX, and design system.
• Collaborate closely with designers, backend developers, and stakeholders.
• Participate in technical discussions, code reviews, and frontend architecture decisions.

• Continuously improve application performance, accessibility, and usability.

   

Requirements

• 3+ years of commercial Frontend Development experience.
• Strong experience with React.js and/or Next.js.
• Strong proficiency in TypeScript.
• Experience implementing Figma designs with high visual accuracy.
• Experience building complex forms and workflow-oriented applications.
• Strong understanding of responsive and adaptive web development.
• Experience integrating applications with REST APIs.
• Experience working in Agile development environments.
• Git/GitHub experience.

• Portfolio or examples of delivered frontend projects.

   

Technical Expertise

We are looking for someone who has practical experience with:

• Building scalable web applications using React.js and/or Next.js
• Developing maintainable and type-safe applications with TypeScript
• Creating modern user interfaces using JavaScript (ES6+), HTML5, CSS3, and SCSS
• Implementing responsive, mobile-friendly, and cross-browser compatible interfaces
• Translating Figma designs into pixel-perfect production-ready solutions
• Working with reusable components and modern frontend architecture patterns
• Developing and maintaining Design Systems
• Managing application state using modern state management approaches
• Integrating and consuming REST APIs
• Implementing authentication, authorization, and user access flows
• Collaborating through Git/GitHub workflows, pull requests, and code reviews

• Applying frontend best practices related to performance, maintainability, accessibility, and code quality

   

Nice to Have

• Experience with Auth0 or similar authentication platforms.
• Experience working on SaaS, Enterprise, FinTech, or Insurance products.
• Experience building role-based applications and permission-driven interfaces.
• Experience with complex multi-step forms and workflow-heavy systems.
• Strong understanding of UI/UX principles and visual design quality.

Soft Skills

• Strong attention to detail.
• Good visual judgment and appreciation for quality UI.
• Excellent communication skills.
• Ability to collaborate effectively with designers and distributed teams.
• Self-organized and proactive mindset.
• Ability to work independently with minimal supervision.
• Reliable part-time availability and ownership of assigned tasks.

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 are looking for an experienced KNIME Data Engineer / Automation Specialist to design, implement, and manage advanced data workflows and solutions. In this role, you will develop production-grade KNIME Data Apps, manage deployments via KNIME Business Hub, and integrate various data sources to accelerate our automation projects.

Requirements 

• 2+ years of practical experience with KNIME Analytics Platform
• Strong track record of successful KNIME implementations and production solutions
• Solid experience in workflow development, performance optimization, and automation
• Hands-on experience with KNIME Business Hub (scheduling, governance, collaboration, and deployment)
• Proven experience with KNIME Data Apps for creating interactive, production-grade solutions
• Ability to design scalable solution architecture for data gathering, enrichment, and transformation
• Experience providing technical consultation to internal teams and customers
• Upper-Intermediate (B2+) English communication skills (both verbal and written)

Nice to have 

• Knowledge of German or Polish languages

   

Responsibilities

• Design and implement advanced KNIME workflows for data gathering, enrichment, and transformation
• Develop KNIME Data Apps for interactive reporting, dashboards, and self-service automation
• Deploy, configure, and manage solutions within the KNIME Business Hub environment
• Integrate KNIME with Google Services APIs, web data sources, and internal company systems
• Implement workflow orchestration, robust error handling, and monitoring for production use
• Build reusable components and templates to accelerate internal automation projects
• Optimize workflows for maximum performance, scalability, and resource efficiency
• Advise on architecture, integration strategies, and overall solution design

• Document technical solutions clearly and ensure a smooth handover to stakeholders

   

Working conditions

• Format: Fully remote position
• Travel: Occasional business trips to the office in Warsaw, Poland

Equals5 helps pharmaceutical companies run precisely targeted ad campaigns on social platforms by identifying healthcare professionals and the consumer signals that reach them. The Identity team builds the data, scoring, and targeting systems that make this possible.

We are looking for a Data Analyst  to join the Identity team at Equals5. This is not a standard analyst role. We are building a dynamic identity resolution system where AI is deeply integrated — both as a productivity multiplier and as a core component of our data processing logic for identity resolution and LLM-based scoring.

We run enrichment against 70+ TB of data, apply AI and LLM-based scoring on top, and process around 20 million enrichment operations per day across hundreds of thousands of records.

The analytical challenges ahead are substantial: how to measure the quality of AI-driven scoring, how to validate that a change makes the system better, how to know where our money and time deliver the most value, and how to turn the questions our internal teams bring in into fast data-backed answers. You will own this side of the business, working daily alongside engineers and the product lead to turn these challenges into decisions that ship.

The main part of the role is not building dashboards — it is the data work that makes a meaningful dashboard possible in the first place. Concretely, you will be:

• Looking at data from multiple vendors side by side and deciding what to trust.
• Reconciling entities across sources that have different shapes and quality.
• Proposing and validating the logic that matches and scores them.
• Defining metrics and ground truth for questions nobody has asked before.
• Tracing why numbers don't line up across partial and sometimes contradictory sources.

Dashboards and visualizations are part of how findings get communicated, but they come at the end — the surface of the work, not its core. Most of your time is spent on what sits underneath: methodology, judgment calls on data quality, and shaping how the domain understands its own numbers.

Responsibilities

• Measurement & Evaluation Foundations: Define how we measure what matters — data quality, the accuracy of our AI scoring, how many records actually get matched to usable signals, cost per outcome. Build the feedback loops that tell us whether a change makes the system better or worse.

• Scoring Intelligence (co-owned with engineers): Partner with the engineering team on the LLM-based scoring system. You will build the evaluation framework for AI scoring, run experiments comparing prompts, models, and approaches against a baseline, and make data-backed calls on where we invest next. Our AI scoring system is actively evolving — you will shape how we measure and improve it.

• Client-related Analysis: Own the analytical side of the work that internal sales and media-buying teams bring in from pharma clients — how reachable a target audience is, how good the data looks, why a campaign performed the way it did. You turn their questions into data-backed answers they can use. Identity is a product core; the analyst works with internal teams, not with clients directly.

• Cost and Value Analysis: Turn cost and value into product decisions. Which data sources and enrichment scenarios pay off, where we overspend, what to cache, what to cut. We operate a mix of free owned data and paid external providers — the decisions have real dollar impact.

• Active AI Usage: Use Claude Code and modern AI engineering tools to multiply your own output. Automate the repetitive parts of analysis so you can focus on the decisions. We provide Claude Code licenses and expect active daily use.

• Data Quality Response: When pipeline output drifts, a provider degrades, or upstream data shifts, you notice first, diagnose the root cause, and drive the fix. You treat data quality as a product, not a ticket queue.

Requirements

• 5+ years as a Data Analyst, Analytics Engineer, or Data Scientist in a product team (not consultancy, not BI-only roles).
• Advanced SQL at TB scale — BigQuery, Snowflake, or equivalent warehouse. You can read and write complex queries on tens of terabytes without someone pre-modelling the data for you.
• Python for analysis at a working level — pandas, Jupyter, or modern equivalents. Comfortable putting together a small script or helper when an existing tool doesn't cover your case.
• Built measurement or evaluation frameworks from scratch for systems that had no baseline. You are comfortable defining what and how to measure, not consuming someone else's KPI.
• Comfort with probabilistic systems. You understand that noise is inherent and 100% accuracy is not the goal — scoring, matching, ranking.
• AI-native workflow. You already use Claude Code, ChatGPT, Copilot, or similar AI tools daily and integrate them into your analytical process.
• English: B2+ (Upper-Intermediate) or higher.

Strong plus 

• LLM evaluation experience — A/B testing AI-powered features, output scoring, prompt iteration with measurable outcomes.
• Identity resolution / identity graph experience — adtech, martech, or customer data platform context (LiveIntent, LiveRamp, Epsilon, Experian Marketing, Acxiom, Merkle, or similar).
• Healthcare or pharma data — working with NPI, HCP-level data, healthcare taxonomies, pharma targeting.

Nice to have

• Experience running controlled experiments on data pipelines.
• Prompt engineering or structured LLM prompt design.
• Prior work in AI-first product companies.

What We Offer

• Fully remote with flexible hours, with working overlap in CET ±2 hours for syncs.
• AI-Native Environment: We provide licenses for Claude Code and encourage using the bleeding edge of AI tech — both for daily work and as part of product logic.
• High-Impact Role: You will directly shape how we identify, score, and reach healthcare professionals — the core business of our domain.
• Small team, direct impact: You will work directly with Product and Engineering leads — no layers between you and the people making decisions.
• No Bureaucracy: Fast decisions, no legacy processes, focus on results.

Who Are We?

Welltech is a global wellness technology company with Ukrainian roots. Our mission is to build and scale wellness apps globally through state-of-the-art, tech-driven performance marketing.

We are one of the most established players in the wellness app space, and we are accelerating. Over 25.5 million people across the world use our apps — Muscle Booster, Yoga-Go, and WalkFit — to build healthier habits, move more, and feel better every day. Every subscription represents a real person making a real change in their life, and we take that seriously.

With 500+ people across hubs in Cyprus, Ukraine, Poland, Spain, and the UK, we combine the scale of a market leader and the drive of a team that's just getting started.

What We're Looking For

We are seeking a talented and motivated Senior Security Engineer (x/f/m) to join our small but dedicated Security Team. In this role, you will play a crucial part in strengthening our overall security posture, collaborate across teams and domains, and own security initiatives company-wide.

Responsibilities:

• Own and drive execution of multiple key security initiatives, ensuring they are well-integrated, documented, and effectively support Welltech’s security goals.
• Collaborate with leadership to shape the team’s roadmap, providing your expertise.
• Mentor junior team members in the Security team to help them grow in their role.
• Collaborate with engineering, IT, and product teams to embed security best practices throughout the development lifecycle and operational processes.
• Champion continuous improvement in Security Engineering by regularly reviewing processes, implementing automation, and driving standardization to enhance team efficiency and organizational impact
• Lead PCI-DSS Compliance initiative with relevant stakeholders
• Design, implement, and maintain security controls and measures across Welltech’s systems, networks, and cloud environments.
• Contribute to threat modeling, risk assessments, and incident response, supporting a proactive and resilient security posture.
• Develop and refine internal security policies, standards, and tools to support company-wide security goals.
• Support and lead security awareness efforts, helping to foster a strong security culture throughout the organization.

Continuously evaluate emerging threats, technologies, and practices, driving improvements to Welltech’s overall security maturity.

Requirements:

• 5+ years of hands-on security engineering experience with proven expertise in implementing and managing security solutions
• Solid understanding of security principles, vulnerabilities, and common attack techniques.
• Proficiency with Python (especially writing Lambda functions).
• Experience with Kubernetes in production environments.
• Familiarity with CI/CD tooling and secure deployment practices.
• Very good knowledge of cloud platforms - AWS or Google Cloud.
• Big plus: Solid Experience with PCI.

• Nice to have: Experience with application security, DLP platforms, and observability.

   

  Soft Skills:

• Excellent written and verbal communication skills.
• A collaborative, proactive mindset and passion for continuous improvement.
• Ability to clearly communicate complex security concepts to technical and non-technical stakeholders.
• Strong organizational skills to effectively prioritize and manage multiple concurrent tasks and meet deadlines.

Requirements:

• Strong practical background in accounting + solid IFRS knowledge;
• 2+ years in international companies or cross-border (foreign jurisdiction) environments;
• Good understanding of tax systems, compliance, and reporting;
• Deep knowledge of Ukrainian Accounting Standards (UAS) and Tax Code of Ukraine;
• Experience improving accounting workflows, shortening closing cycles, and driving automation;
• Experience building management reporting from scratch or improving existing systems;
• Confident Excel / Google Sheets user;
• English at least B1 (written + spoken).

Nice to have:

• Exposure to EU / US / LATAM tax systems (VAT, Sales Tax, Income Tax);

• Experience handling and validating primary documents for non-resident entities.

   

Responsibilities:

• Organize and maintain financial data across multiple jurisdictions;
• Run payroll calculations and processing;
• Prepare and submit USC and PIT reporting;
• Ensure accuracy of accounting entries and financial records;
• Support external accountants and tax reporting processes;
• Participate in annual audits and prepare required audit documentation;
• Assist in monthly, quarterly, and annual financial reporting.

We are looking for a Technical Team Lead (ATE) to lead the development of automated test systems and drive the technical strategy of product testing in a manufacturing environment.

This role combines deep technical expertise with leadership responsibility. You will define the architecture of test solutions, make key engineering decisions, and grow a team of engineers. Your scope will cover the full testing lifecycle — from design analysis to manufacturing support and process optimization.

The ideal candidate has hands-on experience with ATE in production, understands DFT principles, and can build scalable and efficient test solutions.
 

Responsibilities:

1. Technical Strategy & Architecture

• Define test strategy (ICT / FCT / EOL) and ATE architecture
• Establish approaches for test coverage, fault isolation, and DFT
• Define engineering standards and best practices

2. Leadership & Team

• Lead and develop a team of test engineers
• Provide mentoring, design reviews, and technical guidance
• Make engineering decisions and trade-offs

3. Test Development

• Oversee development of test systems (fixtures, software, data infrastructure)
• Conduct DFT reviews with hardware teams
• Ensure production readiness of test solutions

4. Manufacturing & Optimization

• Support NPI → mass production transition
• Collaborate with manufacturing and contract manufacturers
• Optimize test time, yield, and line efficiency
• Lead root cause analysis

5. Data & Performance

• Analyze test data (yield, failure trends)
• Define KPIs and drive continuous improvement

Requirements:

1. Experience

• 5+ years in test engineering (PCBA / manufacturing / product)
• 2+ years of technical leadership experience
• Hands-on experience with ATE in production

2. ATE & Test Systems

• ICT / FCT / EOL testing
• Test fixtures and test infrastructure
• Test coverage, fault isolation, DFT

3. Manufacturing

• NPI → mass production
• Yield management, test optimization, line balancing
• Experience working with contract manufacturers

4. Embedded Systems

• Interfaces: UART, SPI, I2C, CAN, Ethernet
• Firmware flashing (secure flashing is a plus)
• Understanding of bootloaders and production firmware flows

5. Data & Metrics

• Yield analysis, failure Pareto
• KPI definition, SPC, GR&R

We offer:

• Competitive compensation and transparent conditions
• Military reservation (booking)
• Paid vacation and sick leave
• Health insurance
• Opportunity to influence technical decisions and product architecture
• Work with modern manufacturing environments and test systems
• Professional growth and development support
• Open culture and a strong engineering team

If you have relevant experience and are excited to contribute to a meaningful and impactful domain, we’d love to hear from you.

Send us your CV — we’ll be happy to review your application!

Requirements:

• Strong backend development experience with C++ (the bulk of the backend is built on a custom in-house framework)
• Hands-on experience with AWS, particularly S3
• Proficiency with Protobuf
• Experience deploying and operating services on Kubernetes, including performance-driven traffic routing to pods
• Performance engineering skills — hash-based routing, SSD-based caching, and memory-mapped files
• Solid systems / low-level fundamentals (there is no off-the-shelf framework to rely on — much of the stack is custom)
• Ability to work highly autonomously and drive work forward with minimal supervision
• Strong communication skills and experience working in distributed teams (Europe/Ukraine time zone; ~1–2 hours of daily overlap with a US-based team)
• Hands-on experience with AI-assisted development tools — e.g. Claude Code and Codex — including AI skills, plugins, and MCP (Model Context Protocol), with a clear understanding of how to boost personal productivity and code quality using AI tooling.

Nice-to-Have:

• Familiarity with OpenTelemetry / observability tooling
• Understanding of LevelDB SSTable concepts and sorted, time-keyed data structures
• Familiarity with Python (used only for a small metadata/auth service)
• Basic DevOps skills.

Key Responsibilities:

• Optimize the performance of the C++ data-streaming backend — efficient delivery of large recorded datasets to the browser
• Work on infrastructure-level optimizations: traffic routing to Kubernetes pods, hash-based routing, SSD-based caching, and memory-mapped files
• Operate within a custom data-handling stack — a C++ framework, a custom HTTP server, and a proprietary data format built on top of LevelDB SSTables and Protobuf
• Take ownership of performance work end-to-end, proactively identifying bottlenecks and driving solutions independently
• Collaborate with a primarily US-based team with ~1–2 hours of daily overlap, while working largely independently
• Participate in code reviews and design discussions.

About the Project:

You'll join the engineering team of a leading technology company building autonomous mobility and robotics systems. The team develops an internal data visualization platform — a "video and data player" that renders 3D scenes, lidar, and audio recorded by autonomous vehicles. This role sits on the performance work stream: the backend reads on-vehicle data stored in S3, deserializes it from a custom, time-keyed format, and streams it to the browser. The data-transfer service is implemented in C++, and most of the platform's performance gains are expected to come from the backend.

This is a long-term engagement for a strong systems engineer who enjoys low-level performance work and is comfortable ramping on a heavily custom stack with high ownership and minimal supervision.

About the Project

We are building a specialized platform for managing clinical trials, helping medical research sites launch and run studies in full compliance with regulatory requirements. The centerpiece of the system is an AI engine that reads complex medical protocols (100–400+ page documents) and automatically converts them into structured, actionable workflows — visit schedules, patient eligibility criteria, regulatory tasks, and more.

Tech stack: Python 3.14, FastAPI, SQLModel, PostgreSQL + pgvector, LangChain, LangGraph, deployed via Docker Compose.

What You'll Be Working On

AI & NLP:

• Architect and continuously improve RAG pipelines for parsing medical documents
• Optimize LangChain pipelines for speed, modularity, and cost-efficiency
• Implement dynamic model selection (LLM, VLM, NER) based on task complexity
• Ensure reproducibility and transparency of AI decisions (traceability, version tracking)
• Enhance vector search capabilities via pgvector

Backend & Data:

• Design PostgreSQL schemas for complex clinical entities
• Maintain a full audit trail in line with regulatory standards (GxP)
• Improve query performance and transactional reliability

Reliability & Testing:

• Set up structured logging and monitoring for ML tasks and pipelines
• Expand automated test coverage (unit, integration, NLP validation tests)
• Support computerized system validation (CSV) readiness

DevOps:

• Maintain Docker infrastructure and CI/CD pipelines
• Ensure system scalability across multiple studies and sites

What We're Looking For

Must Have:

• 5+ years of hands-on experience with Python, FastAPI, and SQLAlchemy
• Proven experience designing microservices and containerized deployments
• Deep knowledge of PostgreSQL
• Experience with Celery, Redis, and RabbitMQ
• Practical experience with LangChain and vector databases
• Solid understanding of embedding models, AI orchestration, and prompt engineering
• Background in regulated industries (healthcare, fintech, or similar)

Nice to Have:

• Experience building AI systems in GxP environments
• Familiarity with Ruff, Poetry, and pre-commit hooks
• Track record of scaling and re-architecting existing systems

One Thing to Note

We are specifically looking for engineers with real production experience building and refactoring AI/NLP systems — not just prototype experimentation. You will collaborate closely with an ML Architect, ML Engineer, Business Analyst, and QA team.

We are looking for a senior GCP Data Engineer / Data Architect to lead and execute an on-premise to GCP data migration project.
This is a hands-on data-focused role, not a classic DevOps/Kubernetes role.

Main responsibilities:
- Lead and implement the migration of data workloads from on-premise infrastructure to GCP
- Design and build GCP data lake / lakehouse architecture
- Work hands-on with GCP data services such as BigQuery, Dataproc, Cloud Storage, Spark, and related tools
- Design and implement scalable data pipelines and data processing flows
- Handle data ingestion, storage, security, reliability, and cost optimization
- Work independently with the existing technical team and drive technical decisions

Required experience:
- Strong hands-on GCP data engineering experience
- BigQuery, Dataproc, Spark, and Cloud Storage
- Data lake / lakehouse architecture
- On-premise to cloud migration experience
- Ability to lead technical decisions and work independently

Nice to have:
- Dataflow, Pub/Sub, Cloud Composer / Airflow
Full-time availability is preferred. Please apply only if you have real hands-on experience with GCP data platforms and data migration projects.

AutoBidMaster is seeking SEO Specialist to join our Marketing team. 
 

Responsibilities:

• Search and implement SEO strategies to improve organic search rankings and drive website traffic.
• Conduct in-depth keyword research to identify opportunities for content optimization and creation.
• Analyze website architecture, content, and linking strategies to enhance crawlability and user experience.
• Perform on-page SEO tasks, including meta tag optimization, internal linking, and content updates.
• Work closely with agency resources to execute off-page SEO strategies, such as link building and outreach campaigns, to improve domain authority.
• Monitor and analyze website performance using tools like Google Analytics, Google Search Console, and other SEO platforms.
• Collaborate with content creators and marketing teams to ensure SEO best practices are integrated into all content.
• Stay updated on the latest SEO trends, algorithm changes, and industry developments.
• Generate regular reports on SEO performance, including traffic, rankings, and ROI metrics.
• Collaborate with technical SEO tasks related to improving site speed, mobile optimization, and resolving crawl errors. 
   

Qualifications:

• Bachelor’s degree in marketing, Information Technology, or a related field.
• 5+ years of proven experience in SEO, with a track record of successful campaigns.
• Proficiency in SEO tools such as SEMrush, Ahrefs, Moz, or similar platforms.
• Strong understanding of search engine algorithms and ranking factors.
• Excellent analytical skills and the ability to interpret data to make informed decisions.
   

Benefits:

• Competitive compensation
• Working alongside a fast-growing team of professionals from the US and EU, who are setting the new global standard in the automotive industry 
• All the equipment you’ll need to be successful 

• Paid vacation, days off, and sick days 

   

  US public holidays are off - we work according to the US calendar 

  Working hours: 12:00 CET - 20:00 CET
  Please note: we hire ONLY via B2B type of contract.

✨ As a Senior Full-Stack Engineer, you’ll own features end-to-end across the entire stack, working within a highly collaborative team that reports directly to the client’s CTO. You’ll have significant autonomy, direct product impact, and the opportunity to help shape a modern platform from the ground up.

Project Tech Stack: • TypeScript • Next.js / React • Node.js • PostgreSQL • Tailwind CSS • AWS • Event driven architecture • Containers and serverless services • GitHub / CI/CD workflows • Modern observability and monitoring tooling



🧑🏻‍💻 What You’ll Do

Design, build, and evolve key platform features across frontend and backend systems
Develop modern web applications using TypeScript, React, and Next.js
Design clean APIs and scalable backend services with Node.js
Build secure, reliable, and observable cloud-native solutions on AWS
Contribute to CI/CD pipelines, testing strategies, and engineering automation
Collaborate closely with the CTO, product, and design teams in fast-moving development cycles
Take ownership of features from concept and implementation through production deployment and ongoing improvement

🕵️‍♂️Technical Expertise:

5+ years of professional full-stack software engineering experience in production environments
Strong TypeScript and JavaScript expertise
Solid frontend experience with React and Next.js
Node.js backend development experience, including APIs and distributed systems
Strong PostgreSQL knowledge and relational database design skills
Hands-on experience with AWS services and cloud-native development
Understanding of CI/CD practices and modern observability principles
Strong engineering discipline with exceptional attention to detail and software quality

 

✅ Nice to Have:

Event-driven architectures
SaaS and multi-tenant platforms
Infrastructure as Code (Terraform, CloudFormation, etc.)
Web security best practices
Scalability and high-availability systems
Experience operating production systems at scale

💌 What Makes This Opportunity Unique:
Direct collaboration with the client’s CTO
Opportunity to define engineering standards from the start
Modern cloud-native technology stack
High-impact role with both technical depth and leadership influence
Fully remote environment with a strong engineering culture

SOFTSWISS is looking for a Systems Engineer to join our security team and take ownership of the infrastructure behind our security systems.

Purpose of the role:

As a Systems Engineer, you will be responsible for designing, building, and maintaining the infrastructure that powers the company’s security systems. You will ensure high availability, scalability, and reliability of security platforms, while driving automation, improving operational efficiency, and supporting secure integrations across cloud and on-premise environments.
 

Key responsibilities:

• Design, deploy, and maintain the security team infrastructure.
• Ensure high availability and reliability of security platforms through proactive monitoring, alerting, and capacity planning.
• Manage and evolve cloud infrastructure across datacenter dedicated servers and cloud providers.
• Automate routine operational tasks: provisioning, configuration management, patching, and secret rotation.
• Troubleshoot and resolve infrastructure incidents as the primary technical owner.
• Maintain infrastructure documentation: architecture diagrams, runbooks, and change logs.
• Collaborate with security engineers to ensure underlying platforms meet tooling and integration requirements.

Required Experience:

• 5+ years of hands-on Linux system administration experience in production environments
• Deep expertise in Linux internals: systems, networking stack, storage, performance tuning
• Solid understanding of networking fundamentals: TCP/IP, DNS, TLS, routing, firewalling (iptables / nftables)
• Experience with bare-metal and dedicated server environments (Hetzner or similar providers)
• Hands-on experience deploying, operating, and hardening Kubernetes clusters in production, including cluster lifecycle management, CNI networking (Cilium preferred), storage, RBAC Experience deploying, configuring, and operating ClickHouse and PostgreSQL in a production environment
• Hands-on experience operating and maintaining Keycloak in production, including HA setup, backend management, realm/client configuration
• Understanding of identity protocols: OIDC, SAML 2.0, OAuth 2.0 Hands-on experience operating infrastructure across cloud platforms and dedicated servers, including compute, networking, storage, and cost optimisation
• Proficiency in Infrastructure as Code: Terraform, SaltStack, Ansible
• Strong scripting skills: Python and/or Go for automation and operational tooling
• Experience building and maintaining monitoring stacks: Prometheus, Grafana, Alertmanager
• Familiarity with log management and aggregation: Vector, Loki, or ELK
• Clear and structured written and verbal communication skills.
• Upper-Intermediate (B2) or higher English level 
   

Nice to have:

• Experience with Talos Linux or other immutable / minimal OS distributions
• Experience with secrets management: HashiCorp Vault / OpenBao, dynamic secrets, PKI
• Knowledge of ClickHouse integrations: Vector pipelines, S3-compatible object storage backends
• Experience in multi-cloud or hybrid infrastructure environments
• Relevant certifications: CKA (Certified Kubernetes Administrator), OCI Architect Associate, Linux Foundation LFCS

The Mission

Wallee Group is a leader in advanced payment solutions, dedicated to providing robust, scalable, and secure systems across multiple domains. We enhance customer experiences through innovative payment and finance technology that empowers businesses to grow efficiently. With operations spanning several countries, we thrive on collaboration and agility, utilizing the Scrum framework to drive our international teams. At Wallee, we stay at the forefront of market trends, continuously innovating to deliver premier services to our global customers.

The Role

To achieve our mission of providing the market's best payment experience, Wallee is seeking experienced and versatile java software engineers for our Vilnius office. As disruptors in the payment space, we build industry-leading systems that demand the highest standards of security and reliability. We are constantly pushing our solutions into new territories, and we are looking for engineers who thrive in a fast-paced, agile environment to help us redefine the future of finance.

Tasks

Your Impact

• Architect Scalability: Design and develop highly resilient back-end systems using Java, ensuring our infrastructure handles global scale with ease.
• Feature Innovation: Own the end-to-end lifecycle of new features, from initial implementation to refined bug fixing and performance tuning.
• Collaborative Engineering: Work closely with product managers, UX designers, and QA to translate complex business needs into elegant technical solutions.
• Code Excellence: Drive quality through automated testing, rigorous code reviews, and the creation of clear, maintainable technical documentation.
• Stay Ahead: Continuously research and evaluate emerging technologies and methodologies to keep Wallee at the cutting edge of the fintech industry.

Requirements

What You Bring to the Table

• Technical Depth: Advanced proficiency in Java and core frameworks such as Spring, Spring Boot, and Hibernate.
• Systems Thinking: Proven experience building distributed systems and scalable, high-availability solutions.
• Data Mastery: Strong proficiency in SQL and experience managing complex data structures.
• Modern DevOps: Hands-on experience with CI/CD pipelines (Jenkins/GitLab CI) and containerization (Docker, AWS ECS).
• Agile Mindset: A degree in Computer Science (or equivalent experience) and a track record of thriving in fast-paced, Agile environments.

• Bonus Points: Experience with JavaScript, Apache Camel, or BPM engines.

   

  Benefits:

• You are part of an agile, young international team and shape our products sustainably with your ideas.
• You will play a decisive role in designing products in an omni channel payment start-up and work with leading companies in the financial industry on international projects.
• We offer flexible structures and flat hierarchies.
• Cooperation with motivated colleagues and numerous personal development opportunities.

We are looking for a Senior Java Backend Developer to join a long-term project for our EU-based client. You will become part of an international engineering team building a distributed, cloud-native platform focused on scalability, reliability, and high performance.

This role is ideal for an experienced backend engineer who enjoys designing microservice architectures, working with modern cloud technologies, and contributing to complex enterprise-grade solutions.
 

Responsibilities

• Design and implement scalable backend services using Java and Spring Boot.
• Develop and maintain cloud-native microservices in a distributed environment.
• Design microservice architecture and participate in technical decision-making.
• Build and maintain RESTful APIs and integration services.
• Implement messaging-based solutions using RabbitMQ and JMS.
• Participate in code reviews and ensure high engineering standards.
• Develop and maintain automated tests, including integration and performance testing.
• Collaborate closely with Product Owners, Architects, QA Engineers, and DevOps teams.
• Contribute to continuous improvement of development processes and platform reliability.
   

Must Have

• 5+ years of commercial experience with Java development.
• Strong expertise in Java, Spring Boot, and Spring ecosystem.
• Hands-on experience with Spring Integration and Spring Cloud Contract.
• Solid understanding of microservices architecture and distributed systems.
• Experience building and operating cloud-native applications on AWS.
• Experience working with Kubernetes or other container orchestration platforms.
• Strong knowledge of REST API design and implementation.
• Experience with messaging technologies such as RabbitMQ or JMS.
• Experience with Maven, Git, and CI/CD pipelines.
• Hands-on experience with relational and NoSQL databases, including MariaDB/MySQL, DocumentDB, and Redis.
• Experience with automated testing using JUnit and Spring Boot Test.
• Good understanding of software quality assurance practices.
• Upper-Intermediate+ English level.

Nice to Have

• Experience working within SAFe environments.
• Knowledge of eMobility, EV charging ecosystems, or Charge Point Management Systems (CPMS).
• Familiarity with charging communication protocols such as OCPP.
   

What We Offer

• Fully remote position.
• Long-term cooperation with a well-established EU client.
• Opportunity to work on a modern cloud-native platform.
• International Agile environment.
• Direct impact on architecture and technical decisions.
• Professional and collaborative engineering culture.