Upstaff

Summary

- 10+ years of experience in developing software in Java, Spring Boot, and Hibernate;- Strong knowledge of data structures, algorithms, and software development principles;- Proficiency with OOP concepts, large-scale software architecture, networking and distributed system and UNIX/Linux environments;- 5+ years of experience with PostgreSQL, strong understanding of relational databases and SQL;- Experience with NoSQL databases;- Knowledge of Cloud Services and cloud-native application development;- Expert-level understanding of CI/CD principles, know-how of various tools, and passionate focus on CI/CD practices;- Experience with containerization and orchestration frameworks such as Docker and/or Kubernetes;- Location: EU (Poland is preferable), Bulgaria, Serbia, Georgia;- The position is for a full time, long term project.

About the Role:

As a Backend Engineer, you will be responsible for developing key technical solutions for complex purchasing and supply chain business platforms. The system is a SAAS for raw materials strategic sourcing and analytics.

As a member of our engineering team, you will be expected to be a team player, own the product, and contribute and add meaningful innovation to our development. You will have a significant opportunity to be an important part of the client's team. You will collaborate closely with all other teams to assist in their functions.

Minimum qualifications:

• Experience with data modeling and database design with a focus on performance;
• 5+ years of experience with PostgreSQL, strong understanding of relational databases and SQL;
• Experience with NoSQL databases;
• Experience with service-oriented architecture (especially REST);
• Knowledge of Cloud Services and cloud-native application development;
• Expert-level understanding of CI/CD principles, know-how of various tools, and passionate focus on CI/CD practices;
• Experience with containerization and orchestration frameworks such as Docker and/or Kubernetes;
• Strong unit test and debugging skills;
• Proficiency in code versioning tools such as Git;
• 7+ years of experience* in developing software in Java, Spring Boot, and Hibernate;
• Strong knowledge of data structures, algorithms, and software development principles;
• Proficiency with OOP concepts, large-scale software architecture, networking and distributed systems, and UNIX/Linux environments;
• Strong verbal and written communication skills;
• Strong sense of analytical thinking and problem-solving skills;
• Excellent attention to detail, effective time management, and multitasking skills;
• Bachelor’s degree or equivalent practical experience;
• Fluent in English.

Preferred qualifications:

• Understanding of front-end technologies such as JavaScript, React, HTML5 and CSS3;
• Prior experience with SCRUM/Agile methodologies;
• Contributions to open-source projects;
• Experience with purchasing and/or ERP systems.

Focused list of technical expectations:

• Very strong Java experience, worked with recent releases, knows common data structures and JDK APIs;
• Very strong Spring Boot experience has multiple professional experiences with spring boot-microservices, JPA;
• Very strong experience with REST and other API protocols;
• Very strong relational database experience, both database structure and query language;
• Strong understanding of git, git-flow, GitHub flow, and application development lifecycle.

Key Responsibilities:

• Responsibilities Writing well-designed, reusable, testable, and secure code by applying best software development practices; 
• Designing and implementing low-latency, high-availability, and performant applications;
• Architecting well-defined APIs for user-facing elements developed by front-end developers; 
• Investigate 3rd party tools and assess fit to various requirements such as data management, performance, and security;
• Create flow diagram cases;
• Collaborating in a multi-disciplinary team;
• Participating and conducting code reviews; 
• Troubleshooting system-level integration and performance issues;
• Discovering, learning, and implementing new technologies Improving the coding standards and processes within the team; 
• Documenting the software components; 
• Mentoring junior team members in best practices, pair programming, giving internal training, etc.

Summary

- We are looking for a Middle Full Stack Developer in Spain (Madrid)
- Location - Spain (Madrid)
- Duration - long term
- Direct Hiring
- Start - ASAP
- Upper-Intermediate English.

About the role:

As a Middle Full Stack Developer, you’ll become a part of a cross-functional development team engineering experiences of tomorrow.

Our Client is a fast-growing, profitable, well-funded, and dynamic global payments company. Its offices are located in Israel, New York, and more. It is serving thousands of corporates and millions of end-users (payment receivers), in 190+ countries. With client’s fast, flexible, secure, and low-cost solutions, businesses and professionals in both developed and emerging markets can now pay and get paid globally as easily as they do locally.

R&D organization holds almost 500 workers (Developers, Manual QA, Automation QA, DBA, IT, Professional services/production support). R&D teams operate using Scrum methodology, with product managers involved in each team.

Client systems are based on Microsoft and open-source technologies that serve both international WEB users and the company's internal users.

R&D is looking to extend its capacity for new developments and existing product enhancements, in high quality and fast pace of delivery in Spain.

Responsibilities

• Back-end development to meet customers’ business needs and implement components/parts of features or modules according to modern software development environment (microservice architecture) with acceptable quality with moderate
• supervision
• Front-end development
• Describing own code within technical documents and simple diagrams and providing inputs/updates to specifications for the solution
• Writing various types of tests (unit, integration, functional, etc)
• Proactive position in solution development, process improvements
• Working in an international distributed team in an Agile environment
• Efficiently use development toolset, follow code standards and team-agreed rules.
• Use of the best practices and patterns when designing and implementing application components
• Investigate and fix application bugs.

Requirements

• 3 + experience in C# and .NET
• 2+ years’ experience with SQL
• 1+ Experience with distributed systems/ microservices (Communication Patterns, Distributed Transactions, Eventual Consistency)
• Commercial experience with frontend technologies (React, TypeScript)
• Knowledge in: Clean code practices, OOP, OOD, and Design Patterns
• Experience in engineering best practices (code reviews, testing coverage, agile methodologies).
• Experience with messaging systems (e.g. RabbitMQ / Kafka)
• Experience with ORMs (e.g. EntityFramework)
• Experience with unit and integration testing using testing frameworks (e.g. xUnit)
• Experience with troubleshooting, profiling, and debugging applications

Nice to have

• Understanding of network interactions (protocols, conventions (e.g. REST), authentication and authorization flows)
• Knowledge of Deployment patterns
• Angular experience is a plus.
• Team player attitude and mentality
• Ambitious and eager to learn new things
• Understanding of Agile/Scrum/SAFE
• B.Sc in computer science or equivalent

Personal skills

• Investigate issues
• Able to work in distributed cross-functional teams effectively
• Plan, schedule, and monitor your own work
• Have learning agility (readiness for challenge and being open to change)

Summary

- We are looking for a Senior Full Stack .NET Developer in Spain (Madrid)
- Location - Spain (Madrid)
- Duration - long term
- Direct Hiring
- Start - ASAP
- Upper-Intermediate English.

About the role:

As a Senior Full Stack .NET Developer, you'll become a part of the cross-functional development team engineering experiences of tomorrow.

Our Client is a fast-growing, profitable, well-funded, and dynamic global payments company. Its offices are located in Israel, New York, and more. It is serving thousands of corporates and millions of end-users (payment receivers), in 190+ countries. With client’s fast, flexible, secure,e and low-cost solutions, businesses and professionals in both developed and emerging markets can now pay and get paid globally as easily as they do locally.

R&D organization holds almost 500 workers (Developers, Manual QA, Automation QA, DBA, IT, Professional services/production support). R&D teams operate using Scrum methodology, with product managers involved in each team.

Client systems are based on Microsoft and open-source technologies that serve both international WEB users and the company's internal users.

R&D is looking to extend its capacity for new developments and existing product enhancements, in high quality and fast pace of delivery in Spain.

Responsibilities

• Back-end and Front-end development to meet customer’s business needs and implement components according to modern software development environment (microservice architecture)
• Taking part in the decision-making process in design application architecture, solution development, architecture and code review
• Develop and review feature design documents and provide inputs/updates to specifications for the solution
• Design and implement a set of various types of tests (unit, integration, functional, etc)
• Proactive position in solution development, processes improvements
• Working in an international distributed team in an Agile environment
• Communicate with PMs, engineers, Architects, QA and other colleagues and stakeholders
• Delivering the product roadmap and plannings
• To use high coding standards, software best practices and write highly testable, automatable, and performant code over the whole SDLC

Requirements

• 5 + years experience as a server-side developer - all the way from DB to UI (Using C#, .net, REST WEB API)
• 3+ years’ experience with advanced SQL
• 1+ Experience with distributed systems/ microservices (Communication Patterns, Distributed Transactions, Eventual Consistency)
• Commercial experience with frontend technologies (React, TypeScript)
• Excellent knowledge of: Clean code practices, OOP, OOD, and Design Patterns
• Experience in engineering best practices (code reviews, testing coverage, agile methodologies).
• Experience with messaging systems (e.g. RabbitMQ / Kafka)
• Experience with ORMs (e.g. EntityFramework)
• Experience with unit and integration testing using testing frameworks (e.g. xUnit)
• Experience with troubleshooting, profiling, and debugging applications

Nice to have

• Good understanding of network interactions (protocols, conventions (e.g. REST), authentication, and authorization flows)
• Knowledge of Deployment patterns
• Team player attitude and mentality
• Ambitious and eager to learn new things
• Good understanding of Agile/Scrum/SAFE
• B.Sc in computer science or equivalent

Personal skills

• Perform a broad range of complex technical or professional activities, in a variety of contexts
• Investigate, define, and resolve complex issues
• Able to work in distributed cross-functional teams effectively
• Influence customers and team members on the project level
• May supervise others or make decisions which impact the work assigned to individuals or phases of projects
• Plan, schedule, and monitor your own work (and of others where applicable) competently
• Have learning agility (readiness for challenge and being open to change)

Summary

- We are looking for an experienced FPGA Engineer to join our team full-time
- Location - Bulgaria, Poland, Romania Slovakia, Bratislava. 3 times per week office visiting, they have a lab there.
- Duration - long term
- Employment contract
- Start - ASAP
- Upper-Intermediate English.

About the role

We are looking for a talented and experienced FPGA Engineer to join our team. The ideal candidate will have a strong background in FPGA development and be passionate about creating innovative solutions. This role offers the opportunity to work on cutting-edge projects that aim to develop a wireless system for neuro-interface applications. The goal is to innovate and create a solution for neuro-interface technology, improving connectivity and usability in this specialized field.

Responsibilities

• Design, develop, and debug FPGA firmware for various applications.
• Collaborate with hardware and software engineers to integrate FPGA solutions into larger systems.
• Optimize FPGA designs for performance, power, and resource utilization.
• Conduct design reviews and provide feedback to improve overall product quality.
• Stay updated on industry trends and emerging technologies related to FPGA development.

Requirements

• Bachelor's degree in Electrical Engineering, Computer Engineering, or related field. Master's degree preferred.
• Proven experience in FPGA development using Verilog.
• Proficiency in FPGA design tools such as Lattice Radiant, Lattice Diamond, Xilinx Vivado, or Intel Quartus.
• Experience with ModelSim (QuestaSim)
• Experience with Lattice ICE40 family
• Experience with custom high-speed interfaces (e.g. SPI, QSPI, TWI).
• Excellent problem-solving and communication skills.
• Ability to work effectively in a team environment and meet project deadlines.

Nice to have:

• Proficiency in FPGA design tools Lattice Radiant and Diamond
• Experience with Clock and Data Recovery (CDR) implementation without using dedicated transceivers.
• Experience with FPGA-based embedded systems and interfacing with peripherals based on RISC V.
• Knowledge of advanced FPGA architectures and optimization techniques.
• Experience with hardware description languages (HDL) simulation tools.
• Background in machine learning algorithms.