Jobs at Djinni

Hello,

we are looking for a skilled developer to join our project.

About the Role
We're looking for a Upper MIddle Full Stack Java Developer to join our engineering team. You'll work on a large-scale enterprise application serving thousands of users, contributing to both the frontend and backend of our platform. This is an opportunity to make a significant impact on our product while working with a mix of modern and established technologies.

What You'll Do
Develop and maintain features across the full stack, from database to user interface
Build and enhance server-side logic using Java and the Spring ecosystem
Create responsive, user-friendly interfaces using JavaScript, jQuery, and AngularJS
Work with our JSP-based templating system to deliver dynamic web pages
Design and implement RESTful APIs that power our web and mobile applications
Write efficient SQL queries and optimize database performance
Collaborate with product and design teams to translate requirements into working features
Participate in code reviews and contribute to engineering best practices
Help modernize legacy components while maintaining system stability
Troubleshoot and resolve issues across the entire application stack

What We're Looking For
5+ years of professional experience in full-stack Java development
Strong backend skills with Java and Spring Framework (Spring MVC, Spring Security, Spring Data JPA)
Solid frontend experience with JavaScript, HTML5, and CSS3
Experience with jQuery
Knowledge of JSP, JSTL, and server-side templating (Apache Tiles is a plus)
Experience with relational databases (MySQL) and writing optimized SQL queries
Understanding of RESTful API design and AJAX-based communication
Familiarity with ORM frameworks (Hibernate/JPA)
Strong problem-solving skills and attention to detail
Good communication skills and ability to work collaboratively

Nice to Have
Experience with modern JavaScript frameworks (Angular 2+, React, or Vue.js)
Knowledge of Bootstrap and responsive design principles
Experience with caching solutions (Redis)
Familiarity with containerization (Docker) and orchestration (Kubernetes)
Experience with CI/CD pipelines (GitLab CI)
Knowledge of cloud platforms, particularly AWS
Experience with report generation tools (JasperReports)
Familiarity with FreeMarker templating

Tech Stack

Backend:
Java 8, Java 21 (newer services)
Spring Framework 4.x, Spring Boot 2.x/3.x
Spring MVC, Spring Security, Spring Data JPA
Hibernate, MySQL
Redis (caching)
Maven

Frontend:
JavaScript (ES6+)
jQuery, AngularJS 1.5
JSP, JSTL, Apache Tiles
Bootstrap 3, CSS3, LESS
AJAX, RESTful APIs

Infrastructure:
Docker, Kubernetes, Helm
GitLab CI/CD
AWS (SQS, S3, EFS)
Flyway (database migrations)

What We Offer
Work on a mature, real-world product with meaningful business impact
Opportunity to modernize a large codebase and influence technical direction
Collaborative team environment with code reviews and knowledge sharing
Exposure to the full software development lifecycle
Room to grow and take on more responsibility

Budget from 2700 USD (2500 EUR) per month.

Project Description:

We are looking for an experienced Data Engineer to join the Shelf Analytics project – a data-driven application designed to analyze how P&G products are positioned on store shelves. The primary objective of the solution is to improve product visibility, optimize in-store execution, and ultimately increase sales by combining shelf layout data with sales insights.

As a Data Engineer, you will play a key role in building, maintaining, and enhancing scalable data pipelines and analytics workflows that power shelf-level insights. You will work closely with analytics and business stakeholders to ensure high-quality, reliable, and performant data solutions.

Responsibilities:

Design, develop, and maintain data pipelines and workflows using Databricks and PySpark
Read, understand, and extend existing codebases; independently develop new components for Databricks workflows
Implement object-oriented Python solutions (classes, inheritance, reusable modules)
Develop and maintain unit tests to ensure code quality and reliability
Work with Spark SQL and SQL Server Management Studio to create and optimize complex queries
Create and manage Databricks workflows, clusters, databases, and tables
Handle data storage and access management in Azure Data Lake Storage (ADLS), including ACL permissions
Collaborate using GitHub, following CI/CD best practices and working with GitHub Actions
Support continuous improvement of data engineering standards, performance, and scalability

Mandatory Skills Description:

Strong programming skills in Python and PySpark
Hands-on experience with Databricks (workflows, clusters, tables, databases)
Solid knowledge of SQL and experience with Spark SQL and SQL Server Management Studio
Experience with pandas, dbx, and unit testing frameworks
Practical experience working with Azure Storage (ADLS) and access control (ACLs)
Proficiency with GitHub, including CI/CD pipelines and GitHub Actions
Ability to work independently, analyze existing solutions, and propose improvements

Nice-to-Have Skills Description:

Experience with retail, CPG, or shelf analytics–related solutions
Familiarity with large-scale data processing and analytics platforms
Strong communication skills and a proactive, problem-solving mindset

Languages:

English: B2 Upper Intermediate

We are seeking a highly skilled GenAI Engineer to design, develop, and deploy Large Language Model (LLM)–driven applications and intelligent agent systems. This role combines prompt engineering, pipeline architecture, and software development with MLOps and data engineering to deliver scalable, secure, and production-grade Generative AI solutions.

Requirements

• Master’s / Ph.D. in Computer Science, Data Science, Applied Mathematics, or a related field.
• 5+ years of experience in software or ML engineering
• 2 years in LLM / GenAI development.
• Strong Python programming skills and experience with ML/AI stacks
• Hands-on experience with LLM APIs (OpenAI, Anthropic, Mistral, Hugging Face)
• Experience building RAG pipelines (FAISS, Weaviate, Chroma, Milvus) and with vector embeddings.
• Familiarity with agent frameworks (LangChain, DSPy, CrewAI, LangGraph).
• Knowledge of cloud AI platforms (Vertex AI, SageMaker, Azure OpenAI) and MLOps principles.
• Practical understanding of data engineering (ETL, data cleaning, schema structuring).
• Excellent problem-solving skills.

• Excellent analytical, communication, and teamwork skills.

   

  Preferred:

• Experience in fine-tuning or adapting LLMs.
• Exposure to multimodal GenAI and contextual evaluation tools.
• Familiarity with GenAI UX development (Streamlit, Gradio, React-based chat UIs).

Job responsibilities

• Design, implement, and optimize GenAI pipelines.
• Develop prompt engineering frameworks
• Build agentic systems using various frameworks for autonomous and/or multi-step reasoning.
• Architect and deploy GenAI APIs and services
• Establish LLMOps practice: versioning, benchmarking, and monitoring.
• Collaborate with data engineers on ETL and knowledge ingestion pipelines
• Implement GenAI UX layers (chat interfaces, dashboards, plugins)
• Support pre-sales PoCs and cross-functional demos showcasing GenAI capabilities.

We are seeking a skilled Technical Delivery Manager to lead the delivery of enterprise machine learning and data-driven solutions that optimize fleet utilization and operational efficiency across a large-scale vehicle network of 46,000+ assets and 545+ locations. 

In this role, you will drive the end-to-end delivery of production-ready ML capabilities — including demand forecasting, intelligent asset cascading, automated contract analysis, and proactive out-of-spec risk detection — ensuring solutions are scalable, explainable, and aligned with business objectives. You will partner closely with engineering, data science, and business stakeholders to take models from concept through deployment on AWS, translating complex technical work into measurable business outcomes. 

Requirements 

• Experience: At least 3 years of project management experience in the IT field 
• Development Expertise: At least 2 years of technical experience 
• Technical Proficiency: Strong understanding of software development methodologies (Scrum, SAFE etc.), cloud technologies, and DevOps practices. 
• Leadership Skills: Proven ability to lead and motivate teams, foster collaboration, and resolve conflicts. 
• Problem-Solving: Excellent problem-solving and decision-making skills. 
• Communication: Strong written and verbal communication skills, including the ability to present complex technical information to non-technical audiences. 
• English Proficiency: Upper-Intermediate at minimum. 
• Client Focus: A customer-centric approach, prioritizing client satisfaction and building long-term relationships. Experience of US outsource projects is welcomed. 

Nice-to-haves 

• Strategic Thinking: Ability to think strategically and align project goals with broader business objectives. 
• Mentorship: Experience mentoring and coaching junior team members. 
• Industry Expertise: Deep knowledge of the audit domain. 
• Complex Project Management: Proven track record of managing large, complex projects with multiple stakeholders. 

Core Responsibilities 

• Project Planning and Execution: Develop and manage detailed project plans, including timelines, resource allocation, and risk mitigation strategies. 
• Team Leadership: Build, lead and mentor technical teams, fostering a collaborative, friendly and high-performing environment. 
• Scrum Master Role: Coaching and serving the team. Driving the process. 
• Client Relationship Management: Build and maintain strong relationships with clients, understanding their business needs and ensuring their satisfaction. 
• Risk Management: Identify, assess, and mitigate project risks, developing contingency plans as needed. 
• Communication: Effectively communicate project status, risks, and issues to stakeholders at all levels. 
• Reporting: Regularly report project progress and status to the client and internal management 

What we offer   

• Continuous learning and career growth opportunities 
• Professional training and English/Spanish language classes   
• Comprehensive medical insurance 
• Mental health support 
• Specialized benefits program with compensation for fitness activities, hobbies, pet care, and more 
• Flexible working hours 
• Inclusive and supportive culture 

We are seeking a skilled Senior Data Science Engineer to design, build, and deploy production machine learning solutions for an enterprise Fleet Cascading & Optimization Platform managing 46,000+ vehicles across 545+ locations. In this role, you will develop and operationalize demand forecasting, cascading optimization, contract intelligence (NLP/Vision), and out-of-spec prediction models with a strong focus on explainability and business impact. You will own the end-to-end ML lifecycle — from experimentation and model development to scalable production deployment on AWS—working closely with engineering and business stakeholders to deliver reliable, data-driven outcomes. 

Must-Have Requirements:

• Programming & ML Frameworks: Python; PyTorch or TensorFlow; scikit-learn; XGBoost or LightGBM; pandas; NumPy 
• Time Series & Forecasting: BSTS; Prophet; Temporal Fusion Transformer (TFT); hierarchical forecasting with MinT reconciliation 
• Optimization: Linear Programming and MILP using tools such as PuLP and OR-Tools; constraint satisfaction; min-cost flow optimization 
• AWS ML Stack: Amazon SageMaker (Training Jobs, Endpoints, Model Monitor, Clarify, Feature Store, Pipelines) 

Nice-to-have: 

• NLP & Document AI: Amazon Textract; LayoutLMv3; Retrieval-Augmented Generation (RAG) pipelines; Amazon Bedrock (Claude); OpenSearch vector databases 
• Advanced Machine Learning: Graph Neural Networks (GNNs); Deep Reinforcement Learning; Survival Analysis (Cox Proportional Hazards, XGBoost-Survival); attention-based models 
• Explainability & MLOps: SHAP, LIME, Captum; MLflow; A/B testing; champion/challenger frameworks; model and data drift detection 

Core Responsibilities:

• Build demand forecasting models (XGBoost, BSTS, Temporal Fusion Transformer) with hierarchical reconciliation across 545+ locations 
• Develop cascading optimization using MILP/Min-Cost Flow solvers (PuLP, OR-Tools, Gurobi) and Hybrid ML+Optimization pipelines 
• Implement document intelligence pipeline: Textract + LayoutLMv3 for document extraction, RAG with Bedrock (Claude) for semantic reasoning 
• Deploy models on SageMaker with MLOps (Model Monitor, Feature Store, Pipelines); implement SHAP/LIME explainability 

Models You’ll Build:

• Demand Forecasting: Gradient-boosted models (XGBoost), Bayesian Structural Time Series (BSTS), and Temporal Fusion Transformers (TFT), including hierarchical reconciliation 
• Cascading Optimization: Mixed-Integer Linear Programming (MILP) and Min-Cost Flow models, evolving to hybrid ML + solver approaches and advanced Graph Neural Network (GNN) and Deep Reinforcement Learning (DRL) solutions 
• Document Intelligence: Automated document extraction using Amazon Textract and LayoutLMv3, advancing to Retrieval-Augmented Generation (RAG) pipelines with Amazon Bedrock and Vision-Language Models 
• Survival & Out-of-Spec Prediction: Kaplan–Meier estimators, Cox Proportional Hazards models, and XGBoost-Survival techniques 

What we offer:   

• Continuous learning and career growth opportunities 
• Professional training and English/Spanish language classes   
• Comprehensive medical insurance 
• Mental health support 
• Specialized benefits program with compensation for fitness activities, hobbies, pet care, and more 
• Flexible working hours 
• Inclusive and supportive culture 

About Us:

Established in 2011, Trinetix is a dynamic tech service provider supporting enterprise clients around the world. 

Headquartered in Nashville, Tennessee, we have a global team of over 1,000 professionals and delivery centers across Europe, the United States, and Argentina. We partner with leading global brands, delivering innovative digital solutions across Fintech, Professional Services, Logistics, Healthcare, and Agriculture. 

Our operations are driven by a strong business vision, a people-first culture, and a commitment to responsible growth. We actively give back to the community through various CSR activities and adhere to international principles for sustainable development and business ethics. 

To learn more about how we collect, process, and store your personal data, please review our Privacy Notice: https://www.trinetix.com/corporate-policies/privacy-notice 

Description

The client is one of the largest global independent private equity fund administrators, administering over $300 billion of private capital on behalf of its clients with offices in New York, San Francisco, Boston, Stamford, Dallas, and Luxembourg. They offer private fund sponsors a best-in-class combination of people, process, and technology, enabling fund sponsors to most effectively manage their operational infrastructure, financial reporting, and investor communications.
The client represents the most experienced and longest-tenured team in the private equity fund administration industry, with broad expertise across buyout, funds of funds, real estate, energy, infrastructure, credit, co-investment, hybrid funds, feeder funds, venture capital, retail, and managed accounts.
The project aims to provide well-prepared and formatted analytic data for the customer.

Requirements

0-1 year of Business Analyst experience.
Good analytical skills.
Good relationship-building, facilitation, communication, and presentation skills.
Basic knowledge of Business Analysis foundation theory.
Basic understanding of software development lifecycle e.g., planning and analysis, designing the product architecture, developing and coding, testing, etc.
Proactivity and willingness to learn.
Strong prioritization and time management skills
At least upper-intermediate level of English.

Job responsibilities

Gathering, analyzing, and prioritizing business and system requirements
Communicating with stakeholders to clarify needs and align expectations
Applying requirements elicitation and analysis techniques, including UML modeling, use case analysis, Gherkin language, BPMN, and stakeholder interviews
Developing and maintaining documentation, including System Requirements Specification (SRS) templates, diagrams, and calculation templates in Excel
Writing and refining Jira user stories; supporting the development team during sprints
Performing basic manual calculations and data analysis in Excel
Organizing and facilitating Agile ceremonies: daily stand-ups, sprint planning, and retrospectives

EcomTraffic is growing fast, and we’re looking for an experienced Development Lead to take ownership of technical quality, development processes, and team execution. You’ll play a key role in ensuring our experiments, features, and webshop improvements are built correctly, delivered on time, and meet the highest quality standards.

As Development Lead, you act as the bridge between strategy, operations, and development - guiding developers, safeguarding quality, and keeping everyone aligned.

Your Role

• Own development quality across all deliverables and experiments.
• Write clear, in-depth technical briefings for development tasks.
• Perform quality assurance on all development output before delivery.
• Guide and support developers through their tasks and technical challenges.
• Act as supervisor and point of contact for the development team.
• Keep task boards and ClickUp activity up to date and structured.
• Conduct daily standups and weekly sprint calls.
• Monitor timelines and help protect deadlines.
• Manage the implementation or removal of experiments.
• Keep the Conversion Manager and Head of Operations informed on progress, timelines, and technical issues.
• Track feedback from operations and translate it into development improvements.

Who You Are

• An experienced Development Lead / Senior Developer with strong ownership mentality.
• Technically strong and comfortable reviewing, guiding, and improving others’ work.
• Structured and clear in communication — especially when writing technical briefs.
• Confident leading developers without micromanaging.
• Proactive in spotting risks, bottlenecks, and quality issues early.
• Comfortable working in a fast-paced CRO and experimentation-driven environment.
• Familiar with agile workflows, sprint planning, and task management tools (e.g. ClickUp).

What We Offer

• Remote flexibility — work from wherever you’re most productive.
• A central role with real ownership and impact on delivery quality.
• A dedicated learning budget to keep sharpening your technical and leadership skills.
• Collaboration with a driven, high-level CRO team.
• The opportunity to grow with a fast-scaling agency that values quality, responsibility, and transparency.

About EcomTraffic

EcomTraffic is a full-service CRO agency helping DTC brands grow and scale by extracting more value from existing traffic. We reduce cost per conversion through structured experimentation, technical excellence, and data-driven design.

We work with leading Dutch D2C brands such as Cloudpillo, Fugazzi Fragrances, Dreaver, Zelesta, and more.

We are looking for a Project Coordinator who can support the operational and administrative functions. This role is crucial for ensuring the smooth execution of project management processes, contract renewals, financial analysis, and performance reporting. We are looking for a proactive, analytical individual with strong ownership and attention to detail, who has the ambition to grow into a IT Project Manager position.

A new team member will be in charge of:

• Maintain and update service delivery documentation.
• Track client contract and SOW expiration dates, initiate renewal processes.
• Prepare and analyze project financial reports.
• Support project governance and audits, keep project dashboards up-to-date.
• Aggregate and monitor project health (RAG status) across multiple client accounts, escalating delivery risks, financial issues, and tracking action items.
• Assist in preparing client-facing status reports, internal delivery reviews, and business unit presentations.
• Take ownership of recurring operational routines, ensuring nothing is overlooked.

Does this relate to you?

• Strong analytical skills and advanced proficiency in Excel/Google Sheets (pivot tables, lookups, data analysis, financial tracking).
• Excellent organizational and time management abilities; able to juggle multiple tasks and client priorities.
• Proactive, detail-oriented, and capable of working independently in a fast-paced environment.
• Excellent English communication skills (written and spoken) for liaising with internal teams and supporting client communications.
• Eagerness to learn the IT outsourcing business and develop towards a Project Manager role.
• Experience in administrative, operational, or financial support roles, preferably within an IT, tech, or professional services company.
• Background in accounting, finance, or business/technical administration is a strong plus.
• English is Upper-intermediate.

Additional information:

• Cyprus-based candidates only, or willingness to relocate to Cyprus.

Already looks interesting? Awesome! Check out the benefits prepared for you:

• Regular performance reviews, including remuneration.
• Up to 27 paid days off per year for well-being.
• Flexible cooperation hours with work-from-home.
• Fully paid English classes with an in-house teacher.
• Perks on special occasions such as birthdays, marriage, childbirth.
• Referral program implying attractive bonuses.
• External & internal training and IT certifications.

Ready to try your hand? Send your CV without a doubt!

Evernetica is looking for a Junior QA Engineer (Manual) to join the Djaminn product team - a mobile platform focused on creative user-generated content and social interaction. We consider candidates with 0-6 months of commercial experience or strong training / pet-project background.

About the project

Djaminn is a creative social product where key flows include content creation and publishing, feed interactions, user profiles, communication features, and ensuring stable app behavior across different devices and OS versions.

Requirements

• Understanding of QA fundamentals (SDLC/STLC, test types, defect lifecycle).
• Ability to write clear bug reports (steps, expected/actual, environment, evidence).
• Basic experience with test documentation (checklists, test cases).
• Basic understanding of client-server architecture
• Basic API testing skills (Postman/Swagger), understanding of JSON.
• Experience with issue tracking systems (Jira or similar).
• Willingness to test mobile apps (iOS/Android); good eye for UI/UX details.

Personal skills

• Strong communication and teamwork mindset (dev/design/PM).
• Attention to detail, responsibility, structured approach.
• Critical thinking and ability to clarify ambiguous requirements.
• Fast learner, open to feedback.

Responsibilities

• Perform manual testing (functional / regression / smoke / exploratory).
• Review requirements and UI designs, identify gaps and inconsistencies.
• Create and maintain test documentation.
• Report issues, track bug lifecycle, verify fixes.
• Validate app stability across devices/OS versions; basic log analysis when needed.
• Collaborate closely with the development team to reproduce and investigate issues.

Would be a plus

• Any experience with mobile testing on real devices / emulators.
• Experience with Charles Proxy or network inspection tools.
• BrowserStack or other device cloud services.
• Basic understanding of GraphQL.

Work conditions

• Format: remote 
• Schedule: full-time, flexible hours possible by agreement.
• Mentorship and growth opportunities in QA.

Recruitment stages

• QA/Tech interview
• Final interview 

Hi there! We’re Onicore — a growing fintech company building user-friendly payment solutions for a global audience.

We are looking for an HR Generalist with a strong focus on recruitment, who is not afraid to take ownership of their decisions and ideas, and is able to work autonomously in a fast-paced environment.

What you’ll do:

— Own the full hiring cycle: from gathering requirements and sourcing candidates to making offers and onboarding.

— Work closely with hiring managers, helping to shape role profiles and hiring strategies.

— Conduct initial HR interviews and provide constructive feedback.

— Build, improve and scale recruitment processes and the hiring funnel, including analytics.

— Support core HR processes: onboarding, documentation, internal policies, and HRM systems.

— Create and maintain a positive candidate and employee experience.

What we expect you to have:

— 3+ years of experience as an HR Generalist.

— Strong focus on recruitment and understanding of the full hiring cycle.

— High level of independence and ownership.

— Strong communication skills and structured thinking.

— English proficiency at Upper-Intermediate level or higher.

— Experience working in IT, product, and/or service companies.

What’s on us:

— Competitive salary and benefits package.

— Opportunities for professional development and career growth.

— Health insurance.

— Remote work with the possibility to visit our office in Kyiv.

— Space to share your ideas and bring them to life.

Is this all about you? Send us your CV!

A product iGaming company is expanding its team and looking for a Senior Recruiter (iGaming) who can successfully hire senior and high-level professionals in SEO, Affiliate Marketing, and iGaming-related roles.

This role is focused on closing complex, non-traditional IT positions, partnering with senior hiring managers and C-level stakeholders, and building scalable recruitment processes in a fast-growing product environment.

This is a hands-on operational role with real impact on business growth.
 

Responsibilities

Manage full-cycle recruitment for IT and Affiliate/iGaming roles

Actively source and build relationships within SEO, Affiliate Marketing, and iGaming communities

Close key roles including SEO Specialists, Tech SEO, Linkbuilders, PBN Specialists, Content Specialists, and similar profiles

Partner with C-level executives and hiring managers, providing market insights and hiring recommendations

Build and maintain strong pipelines of senior and high-level candidates

Maintain candidate databases in ATS and analyze recruitment performance

Coordinate interviews and ensure high-quality candidate and stakeholder experience

Support employer branding and strengthen the company’s presence in the recruitment market

Continuously improve recruitment processes, sourcing strategies, and hiring workflows
 

Requirements

2+ years of experience in IT and/or Affiliate recruitment

1+ year of experience hiring in the iGaming vertical

Proven track record of closing SEO and Affiliate Marketing roles

Confidence in communication with senior+ and high-level candidates

Own candidate database and strong network in SEO / Affiliate Marketing communities

Understanding of iGaming and Affiliate market specifics

Strong stakeholder management, communication, and negotiation skills

High level of autonomy, ownership, and result orientation
 

What We Offer

Full freedom in recruitment approaches, sourcing strategies, and experimentation

Access to recruitment resources: advertising budgets, sourcing tools, design support, Djinni, referrals

Opportunity to work with IT and Affiliate roles from Middle+ to Head level

Collaboration with senior hiring managers deeply involved in hiring

Trust in your recruitment expertise and decision-making

Minimal bureaucracy and fast decision-making

Performance-based bonus system

Professional growth, career development, and support for initiatives
 

Benefits

Flexible benefits system with an annual budget for health and education that grows with tenure

Gift budgets for birthdays and significant life events

29 paid vacation days

7 paid sick days without medical certificate + 10 with confirmation

Flexible working hours (start between 9–11, finish between 18–20)

Personalized career path

Modern tech kit for comfortable remote work

Full tax compensation and financial reporting support

💥 Join our team.

Description

As the Data Architect, you will be the senior technical visionary for the Data Platform. You will be responsible for the high-level design of the entire solution, ensuring it is scalable, secure, and aligned with the company’s long-term strategic goals. Your decisions will form the technical foundation upon which the entire platform is built, from initial batch processing to future real-time streaming capabilities.

Requirements

Required Skills (Must-Haves)

– Cloud Architecture: Extensive experience designing and implementing large-scale data platforms on Microsoft Azure.
– Expert Technical Knowledge: Deep, expert-level understanding of the Azure data stack, including ADF, Databricks, ADLS, Synapse, and Purview.
– Data Concepts: Mastery of data warehousing, data modeling (star schemas), data lakes, and both batch and streaming architectural patterns.
– Strategic Thinking: Ability to align technical solutions with long-term business strategy.

Nice-to-Have Skills:

– Hands-on Coding Ability: Proficiency in Python/PySpark, allowing for the creation of architectural proofs-of-concept.
– DevOps & IaC Acumen: Deep understanding of CI/CD for data platforms and experience with Infrastructure as Code (Bicep/Terraform)/Experience with AzureDevOps for BigData services
– Azure Cost Management: Experience with FinOps and optimizing the cost of Azure data services.

Job responsibilities

– End-to-End Architecture Design: Design and document the complete, end-to-end data architecture, encompassing data ingestion, processing, storage, and analytics serving layers.
– Technology Selection & Strategy: Make strategic decisions on the use of Azure services (ADF, Databricks, Synapse, Event Hubs) to meet both immediate MVP needs and future scalability requirements.
– Define Standards & Best Practices: Establish data modeling standards, development best practices, and governance policies for the engineering team to follow.
– Technical Leadership: Provide expert technical guidance and mentorship to the data engineers and BI developers, helping them solve the most complex technical challenges.
– Stakeholder Communication: Clearly articulate the architectural vision, benefits, and trade-offs to technical teams, project managers, and senior business leaders.

We are looking for a Manual QA Engineer to join a mobile product team working on secure, high-traffic mobile applications for iOS and Android. The role focuses on ensuring quality, stability, security, and compliance of mobile applications in a regulated, real-time environment. You will work closely with mobile engineers, backend developers, and product managers to validate complex user flows, integrations, and security-sensitive features.

Work Conditions

Employment Type: Full-time

Work Format: Onsite in Madrid office

Relocation: Madrid, Spain (relocation support provided)

Onsite Requirement: Fully onsite after the first 3 months

Start Date: ASAP

Schedule: Standard business hours

Key Responsibilities

Perform manual testing of mobile applications on iOS and Android platforms

Analyze product requirements, specifications, and designs to create clear and detailed test cases

Execute functional, regression, smoke, exploratory, and acceptance testing

Validate authentication and authorization flows (login, MFA, token handling, permissions)

Test integrations with external APIs, payment systems, and third-party services

Validate real-time features, data synchronization, and state consistency

Perform mobile-specific testing:

• App lifecycle scenarios
• Network interruptions and recovery
• Background / foreground behavior
• Different devices, OS versions, and screen sizes

Identify, document, and track defects with clear reproduction steps and evidence

Collaborate closely with developers to investigate issues and verify fixes

Participate in release testing and support App Store / Google Play releases

Ensure high quality, usability, and stability across production releases

Required Qualifications

3+ years of experience as a Manual QA Engineer, preferably with mobile applications

Strong experience testing mobile apps (iOS and Android)

Solid understanding of:

• Software testing fundamentals and QA processes
• SDLC and STLC
• Bug lifecycle and defect tracking

Experience working with test documentation:

• Test cases
• Checklists
• Test plans

Experience testing REST APIs (using Postman, Charles, or similar tools)

Good understanding of client-server architecture

Ability to analyze logs and reproduce complex issues

Strong attention to detail and analytical thinking

Nice to Have

Experience testing fintech or payment-related applications

Understanding of security-sensitive flows (authentication, authorization, session handling)

Experience with mobile traffic inspection tools (Charles, Proxyman, Fiddler)

Basic knowledge of SQL or databases

Experience working in Agile / Scrum teams

Experience with test management tools (TestRail, Zephyr, Xray, or similar)

Experience with mobile automation (Appium or similar) — as a plus

Responsibilities

• Build and maintain backend services and APIs using .NET 8+ and C#.
• Design and manage PostgreSQL databases, ensuring data integrity and performance.
• Implement Entity Framework Core for data access and business logic.
• Integrate backend systems with AWS services (EC2, Lambda, RDS, S3, etc.).
• Ensure backend systems are secure, scalable, and maintainable.
• Write clean, testable, and efficient code with proper documentation.
• Troubleshoot, debug, and optimize backend services.
• Collaborate with frontend developers and product team to define APIs.

Requirements

• 2+ years of professional experience with .NET (C#).
• Strong knowledge of Entity Framework Core and RESTful API development.
• Experience with relational databases, ideally PostgreSQL.
• Familiarity with cloud technologies, especially AWS basics (EC2, Lambda, RDS, S3).
• Understanding of authentication & authorization, including OAuth2.
• Problem-solving mindset and attention to detail.
• Ability to work in a remote team environment with good communication in English.

Nice-to-Have

• Experience with Docker and containerized deployments.
• Basic understanding of CI/CD pipelines

Summary / Objective:

Klickly is seeking an experienced and highly-motivated Senior Software Engineer. This role will be responsible for working with Klickly's tech team to architect, design, develop, test, debug, and refine high-performing, scalable, secure, enterprise-grade applications in a modern architecture. The ideal candidate will work across multiple microservices, APIs, background workers, and frontend applications, leveraging event-driven architecture, real-time data processing, and modern practices. This position is especially suited to individuals with a proven-track record developing complex, highest-quality software applications across advertising, eCommerce, and big data. 5+ years full-stack Javascript experience and a passion for startups a must. Advertising, eCommerce and big data experience ideal.

Desired experience and skills:

- 5+ years Javascript (Node.js) experience in cross-functional development teams

- Database: PostgreSQL (with read replicas, connection pooling via PgBouncer), Prisma ORM, Redis (Redis Stack, Redis Cluster)

- Streaming & Event-Driven Architecture: Apache Kafka (Confluent Platform), Kafka Connect, Schema Registry, KSQL, Debezium (Change Data Capture)

- Job Queues & Background Processing: BullMQ, Redis-based job processing

- CI/CD: GitHub Actions, Jenkins

- AWS Services: EKS (Elastic Kubernetes Service), ECS, ECR, S3, RDS (PostgreSQL), ALB/NLB (Application/Network Load Balancers), ACM (Certificate Manager), ElastiCache, ElasticSearch, Batch, STS, IAM, VPC, EBS, Secrets Manager/Parameter Store

- Containerization & Orchestration: Docker, Docker Compose, Kubernetes

- Strong experience with REST API and GraphQL

- Monorepo Management: pnpm workspaces, Turborepo

- Data Warehouse: Snowflake

- Payments Integration: Stripe

- Error Tracking & Monitoring: Bugsnag

- Version Control & Code Quality: Git, Husky, ESLint, Prettier

Will be a plus:

- Front-end: React (18+), MobX, MobX State Tree, Ant Design, React Router, Styled Components

- ETL Pipelines: Experience with data pipelines, Snowflake integration, Kafka-based data streaming

- Graph database: Neo4J, AWS Neptune

- Infrastructure & DevOps Tools (Note: We have a dedicated DevOps team, but experience with these tools is valuable): ArgoCD (GitOps), Karpenter (node autoscaling), External Secrets Operator, Prometheus/Grafana (monitoring), Strimzi (Kafka operator for Kubernetes), Helm

Expertise in Klickly's core industries:

- eCommerce Platform Integrations: Shopify (Admin API, GraphQL), BigCommerce, WooCommerce, Google Shopping, Meta Catalog

- Big Data & Analytics: Snowflake data warehouse, machine learning, recommendation engines, data pipeline architecture

- Payments: Stripe integration, PCI compliance, security best practices

- Advertising: Programmatic/RTB, attribution tracking, re-targeting/pixels, bidders, pixel implementation

- Marketing: Email service integration, social media platforms, affiliate marketing

Soft skills:

- Strong troubleshooting, problem solving and analytical skills

- Self-driven and proactive with the ability to work both independently & in groups

- Ability to manage multiple projects, deadlines and priorities

- Organized with impeccable attention to detail and a methodical & consistent working style

- Excellent oral and written communication skills

- High levels of integrity and ability to follow strictest confidentiality guidelines

- A positive attitude

Other details:

- Competitive compensation, commensurate with experience

- Meaningful equity upside reflective of senior level lead roles

- Unlimited PTO + company holidays