BySix | Careers

Senior C++ Developer

About Us BySix Engineers the future and drives innovation. We are more than just a standard software engineering company, we believe that true impact comes from combining technical expertise with human values. That's why we reflect that in our approach - technology is not the end goal, but the enabler. Why Us? 🫸 Multidisciplinary team 📒 Training on demand 💴 Attractive salary and benefits package 📈 Career progression plans 👌 And amazing get together events What are we looking for? We are looking for a Senior C++ Developer with: - At least 5 years of experience in software development and experience with trading platforms or high-load real-time systems. - Solid experience in C++ (11/14/17/20), STL, and Boost. - Strong knowledge of architecture, data structures, and algorithms. - Experience in a Linux environment (cmake, gcc, gdb). We Value - Knowledge of Python, Bash, or the FIX protocol. What do we expect from you? - Integration into the Electronic Equities team to work on an ultra-low latency algorithmic trading platform in Lisbon. The work involves the development of new Algo models, frameworks, and exchange connectors. - Development of modules, components, and utilities for the eTrading platform. - Responsibility for the platform's lifecycle (dev, support, CI/CD, bug fixing). - Participation in 'greenfield' projects and coordination with global teams. Are you ready? If you're ready to make a real impact by leveraging cutting-edge technology and fostering human-centric solutions, BySix is the place for you. Together, we'll drive innovation and create lasting business value. Note: BySix is an equal opportunity employer. All applicants will be considered and analyzed regardless of ethnicity, religion, gender identity, sexual orientation, national origin, age, or disability status.

Location

Lisbon (Hybrid)

Experience

Min. 5 years

Main skills

AI developer

About Us BySix Engineers the future and drives innovation. We are more than just a standard software engineering company, we believe that true impact comes from combining technical expertise with human values. That's why we reflect that in our approach - technology is not the end goal, but the enabler. Why Us? 🫸 Multidisciplinary team 📒 Training on demand 💴 Attractive salary and benefits package 📈 Career progression plans 👌 And amazing get together events What are we looking for? We are looking for an AI developer with: - 3 or more years of software development experience, full-stack or backend. - Proven, hands-on experience building with AI tooling: LLMs, RAG, agents, or similar. Not just awareness of the space, but something you have actually shipped. - Comfortable picking up unfamiliar stacks and technologies without needing a structured onboarding programme. - Able to work with significant independence: you manage your own time, your own decisions, and your own output. We Value - You have built something real with AI outside of your day job, a side project, an open source contribution, anything that shows genuine curiosity. - You get excited by the productivity delta that AI is creating right now, and you want to be the person delivering that to companies that have not figured it out yet. - You have worked in early-stage or startup environments and found the ambiguity energising rather than frustrating. - You have experience with cloud infrastructure and understand what it takes to move something from prototype to production. What do we expect from you? - Build functional AI prototypes and client-facing pilots from discovery through to handover - Integrate LLMs, RAG systems, and AI agents into existing client products and workflows - Adapt to whatever stack the client context requires, and get productive in it quickly - Work with significant autonomy: own your technical decisions, raise blockers early, and drive your work to completion - Collaborate directly with the MD and client stakeholders, without layers in between - Move at the pace the work demands: our pilots are measured in weeks, not quarters Are you ready? If you're ready to make a real impact by leveraging cutting-edge technology and fostering human-centric solutions, BySix is the place for you. Together, we'll drive innovation and create lasting business value. Note: BySix is an equal opportunity employer. All applicants will be considered and analyzed regardless of ethnicity, religion, gender identity, sexual orientation, national origin, age, or disability status.

Location

Remote

Experience

Min. 3 years

Main skills

Business Intelligence Analyst

About Us BySix Engineers the future and drives innovation. We are more than just a standard software engineering company, we believe that true impact comes from combining technical expertise with human values. That's why we reflect that in our approach - technology is not the end goal, but the enabler. Why Us? 🫸 Multidisciplinary team 📒 Training on demand 💴 Attractive salary and benefits package 📈 Career progression plans 👌 And amazing get together events What are we looking for? We are looking for a Business Intelligence Analyst with: - 2 - 3 years of experience in data, reporting, or analytical contexts. - Interest in Business Intelligence, data analysis, and decision support. - Good communication and collaboration skills when working with different teams. - Organized, analytical, and detail‑oriented profile. - Proactivity, curiosity, and strong willingness to learn. - Knowledge of BI and reporting tools (e.g., Power BI, MicroStrategy, or similar). We Value - Understanding of data testing and validation concepts (e.g., results verification, test scenarios, indicator consistency). - Experience with ETL/ELT processes (SSIS, Data Factory, ODI, Snowflake, or similar). - Knowledge of SQL and Python. What do we expect from you? - Support the collection, analysis, and interpretation of data from different systems. - Participate in the creation and maintenance of BI reports and dashboards. - Assist in validating data quality and consistency. - Collaborate with functional and technical teams to clarify reporting and analysis needs. - Support the documentation of indicators, metrics, and BI processes. - Contribute to testing and validation of new developments or data sources. If you're ready to make a real impact by leveraging cutting-edge technology and fostering human-centric solutions, BySix is the place for you. Together, we'll drive innovation and create lasting business value. Note: BySix is an equal opportunity employer. All applicants will be considered and analyzed regardless of ethnicity, religion, gender identity, sexual orientation, national origin, age, or disability status.

Location

Lisbon (Hybrid)

Experience

Min. 2 years

Main skills

Business Analyst

Location

Remote

Experience

Min. 5 years

Main skills

Angular Developer

Location

Lisbon (Hybrid)

Experience

Min. 6 years

Main skills

Quarkus Backend Developer

Location

Lisbon (Hybrid)

Experience

Min. 6 years

Main skills

FrontEnd React Developer (S&H)

Location

Lisbon (Hybrid)

Experience

Min. 5 years

Main skills

Senior .NET Consultant

About Us BySix Engineers the future and drives innovation. We are more than just a standard software engineering company, we believe that true impact comes from combining technical expertise with human values. That's why we reflect that in our approach - technology is not the end goal, but the enabler. Why Us? 🫸 Multidisciplinary team 📒 Training on demand 💴 Attractive salary and benefits package 📈 Career progression plans 👌 And amazing get together events What are we looking for? We are looking for a Senior .NET Consultant with: - Education: Degree in Computer Science or equivalent. - More than 4 years of professional experience in .NET Core / .NET (MVC). - More than 4 years with Microsoft Entity Framework and SQL Server. - More than 4 years of experience with RESTful APIs, Microservices, and Swagger. - More than 4 years of experience in consuming REST/JSON and/or SOAP/XML services. - Proven experience in implementing AI-assisted software. We Value - Hands-on experience with Azure Cloud Services (Azure Bus/Mass Transit, Azure Functions, Logic Apps). - Knowledge of Azure DevOps (CI/CD pipelines). - Strong autonomy, problem-solving skills, and a proactive mindset toward new technologies. What do we expect from you? - Maintain and evolve .NET (C#) applications using .NET Core and MVC. - Implement RESTful APIs and services for complex system integrations. - Guarantee best practices, including unit testing, code reviews, and security standards. - Participate in architectural definitions, technical analysis, and estimations. - Work closely with POs, QA, and Ops teams for optimized continuous delivery. Are you ready? If you're ready to make a real impact by leveraging cutting-edge technology and fostering human-centric solutions, BySix is the place for you. Together, we'll drive innovation and create lasting business value. Note: BySix is an equal opportunity employer. All applicants will be considered and analyzed regardless of ethnicity, religion, gender identity, sexual orientation, national origin, age, or disability status.

Location

Lisbon (Hybrid)

Experience

Min. 4 years

Main skills

Software Architect

About Us BySix Engineers the future and drives innovation. We are more than just a standard software engineering company, we believe that true impact comes from combining technical expertise with human values. That's why we reflect that in our approach - technology is not the end goal, but the enabler. Why Us? 🫸 Multidisciplinary team 📒 Training on demand 💴 Attractive salary and benefits package 📈 Career progression plans 👌 And amazing get together events What are we looking for? We are looking for a Software Architect with: - Bachelor's degree in Computer Engineering or equivalent, from a higher education institution in Portugal or with equivalence in Portugal. - Minimum experience: 10+ years as a developer, with a clear transition to solution design. - At least 3 years as an architect or technology lead for distributed solutions. - Practical experience with complex event-driven architectures. - Must have defined message typologies, asynchronous communication patterns, scalability strategies, event persistence (event sourcing), and service integration. - Proven experience with Kafka, Service Bus, or RabbitMQ in mission-critical solutions. - Must have implemented Event Sourcing + Data Streaming + CQRS in production. - Experience with Azure cloud architecture (event hubs, functions, service bus, etc.). - Solid knowledge of relational and non-relational databases. - Strong ability to communicate technically with development teams and stakeholders. Are you ready? If you're ready to make a real impact by leveraging cutting-edge technology and fostering human-centric solutions, BySix is the place for you. Together, we'll drive innovation and create lasting business value. Note: BySix is an equal opportunity employer. All applicants will be considered and analyzed regardless of ethnicity, religion, gender identity, sexual orientation, national origin, age, or disability status.

Location

Lisbon (Hybrid)

Experience

Min. 10 years

Main skills

Tech Lead

Location

Lisbon (Hybrid)

Experience

Min. 7 years

Main skills

Senior .NET Developer

About Us BySix Engineers the future and drives innovation. We are more than just a standard software engineering company, we believe that true impact comes from combining technical expertise with human values. That's why we reflect that in our approach - technology is not the end goal, but the enabler. Why Us? 🫸 Multidisciplinary team 📒 Training on demand 💴 Attractive salary and benefits package 📈 Career progression plans 👌 And amazing get together events What are we looking for? We are looking for an Senior .NET Developer with: - Degree in Computer Engineering or equivalent, from a higher education institution in Portugal or with equivalence in Portugal. - Minimum experience: 10 years in .NET (ideally .NET 6+) and 3+ years with microservices. - Proven experience in event-driven solutions with Kafka or equivalent. - Experience with Data Streaming (Kafka Streams, ksqlDB, Spark Streaming, etc.). - Good knowledge of event-driven architectures: for example, must know how to produce and consume events, handle failures, ensure reliability (e.g., at-least-once delivery, retries, idempotency). - Must have worked in an ecosystem with microservices and integration via events. - Knowledge of Event Sourcing – must have used the pattern in at least one real project. - Solid experience in Azure environments. - Technical proactivity, ability to mentor more junior developers. - Experience in Agile environments with technical ownership. Are you ready? If you're ready to make a real impact by leveraging cutting-edge technology and fostering human-centric solutions, BySix is the place for you. Together, we'll drive innovation and create lasting business value. Note: BySix is an equal opportunity employer. All applicants will be considered and analyzed regardless of ethnicity, religion, gender identity, sexual orientation, national origin, age, or disability status.

Location

Lisbon (Hybrid)

Experience

Min. 10 years

Main skills

AI Data Analyst

Location

Remote

Experience

Min. 5 years

Main skills

.NET/React Tech Lead (S&H)

About Us BySix Engineers the future and drives innovation. We are more than just a standard software engineering company, we believe that true impact comes from combining technical expertise with human values. That's why we reflect that in our approach - technology is not the end goal, but the enabler. Why Us? 🫸 Multidisciplinary team 📒 Training on demand 💴 Attractive salary and benefits package 📈 Career progression plans 👌 And amazing get together events What are we looking for? We are looking for a .NET/React Tech Lead with: - Minimum 8 years of experience with .NET Core. - Minimum 4 years of experience with ReactJS. - Strong experience in RESTful WebAPI development. - Proficiency with ORMs (Entity Framework Core or Dapper). - Experience with Message Brokers (RabbitMQ or Apache Kafka). - Solid understanding of microservices architecture. - Experience with relational databases (SQL Server / PostgreSQL). - Experience developing Web SPAs using React . - Familiarity with unit testing frameworks (xUnit, NUnit). - Proficient in Git and Gitflow workflow. - Mandatory experience with Clean Code / Clean Architecture. We Value - Experience with containerization (Docker / Kubernetes) - Knowledge of Ágora Design System - Experience in setting up and maintaining CI/CD pipelines What do we expect from you? - Lead a full-stack development team (.NET and React). - Define and enforce best practices in architecture and coding standards (Clean Architecture, Clean Code). - Design and develop scalable microservices-based solutions. - Oversee integration between backend and frontend components. - Support testing strategy and continuous integration setup. - Mentor developers and foster technical growth within the team. - Collaborate with technical and functional stakeholders to align requirements. Are you ready? If you're ready to make a real impact by leveraging cutting-edge technology and fostering human-centric solutions, BySix is the place for you. Together, we'll drive innovation and create lasting business value. Note: BySix is an equal opportunity employer. All applicants will be considered and analyzed regardless of ethnicity, religion, gender identity, sexual orientation, national origin, age, or disability status.

Location

Lisbon (Hybrid)

Experience

Min. 8 years

Main skills

.NET / React Full-Stack Developer

Location

Lisbon (Hybrid)

Experience

Min. 3 years

Main skills

.Net/React Developer

Location

Lisbon (Hybrid)

Experience

Min. 6 years

Main skills

1 – 15 of 19