BySix | Careers

IT Business 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 an IT Business Analyst with: - Experience in business analysis, portfolio management, IT governance or transformation projects. - Practical experience with both LeanIX and Power BI, including data modelling. - Experience in strategy consulting, management consulting or a comparable internal advisory role is an advantage. - An understanding of IT financials, business cases and how initiatives, applications and resources connect. - A structured, analytical approach, with the ability to break down complex questions and explain findings clearly. - Confidence working with different stakeholders and contributing independently to agreed work packages. - A relevant degree or equivalent practical experience, with very good English skills. - Ability to take advantage of AI, to explore practical ways to use it in analysis, reporting and everyday work. What do we expect from you? - Support portfolio planning, prioritisation and regular reviews, considering strategic fit, expected benefits, risks and team capacity. - Analyse business requirements and contribute to business cases, roadmaps and management presentations. - Maintain application information, ownership and dependencies in LeanIX, linking them to initiatives and business needs. - Develop Power BI reports and data models covering costs, actuals versus forecast, resource allocation and delivery progress. - Work with data owners to improve data quality, automate reporting and clarify cost allocation. - Support stakeholder workshops and the introduction of governance processes, documenting decisions and following up agreed actions. 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. 3 years

Main skills

Angular Developer

Location

Lisbon (Hybrid)

Experience

Min. 6 years

Main skills

Fullstack Angular/Java Developer

Location

Lisbon (Hybrid)

Experience

Min. 5 years

Main skills

Gen AI Python Engineer

About Us We’re more than a software company. We’re a team of visionaries turning bold ideas into real-world impact. Here, generative AI meets brilliant engineering to craft solutions that aren’t just smart — they’re transformative. From solving the impossible to scaling with style, we do it all with passion, integrity, and a spark of personality that sets us apart. Why Us? 🧠 A culture of innovation — Bring your wildest ideas. We make them real. 🌍 Diverse, multidisciplinary teams — Tech, business, strategy — all in one squad. 🎓 Training on demand — Your growth = our growth. 💰 Competitive salary and benefits — We reward talent. Period. 🚀 Clear career progression — No glass ceilings here. 🎉 Get-togethers that don’t suck — From tech talks to team trips. What are we looking for? We’re on the hunt for a Python Engineer - Generative AI to join our elite product engineering team and lead the development of next-gen LLM-based agentic applications. If you thrive in fast-paced environments, love working with LLMs like GPT, Claude or Mistral, and want to build AI-powered systems that actually go to production — then this is your moment. What you’ll be doing Designing and building agentic apps using LLMs, LangChain / LangGraph or similar frameworks Implementing RAG pipelines with chunking, hybrid search, vector DBs, and prompt tuning Developing and deploying LLM-based microservices into cloud-native architectures (AWS or Azure) Writing clean, scalable Python code with high test coverage Keeping up with the latest in LLM evolution, RLHF, DSPy and all the buzzwords (that actually matter) Leading discussions on AI capabilities, risks and opportunities with technical and non-technical folks Monitoring models and apps with Datadog, Databricks or similar observability tools Collaborating with other teams in agile sprints, mentoring engineers, and shipping greatness The skills we need ✔️ Solid Python skills (this is non-negotiable) ✔️ At least 6 months of hands-on GenAI product experience (LangChain, RAG, vector stores, etc.) ✔️ Experience with cloud platforms (AWS or Azure) ✔️ Experience building microservices, REST APIs, Docker/Kubernetes-based apps ✔️ Familiar with CI/CD pipelines (e.g., GitHub Actions) ✔️ Comfortable working with Git, Agile and international teams ✔️ Ability to break down complex ideas for non-tech stakeholders ✔️ Strong communication and leadership skills 🎯 Bonus points if you’ve worked with DSPy, fine-tuning, or contributed to open-source GenAI tools Are you ready? If you're ready to push the limits of what's possible with AI — and have fun while doing it — then BySix is where you belong. Bring your talent, curiosity and vision. We’ll bring the challenges, the impact, and the celebration of your success. Note: BySix is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees — regardless of who you are or where you come from. You belong here.

Location

Remote

Experience

Min. 7 years

Main skills

Mid/Sr. Data Platform Engineer

Location

Remote

Experience

Min. 3 years

Main skills

Product Manager

Location

Remote

Experience

Min. 3 years

Main skills

SQL Developer

Location

Lisbon (Hybrid)

Experience

Min. 3 years

Main skills

Site Reliability Engineer

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 Site Reliability Engineer with: - More than 3 years of experience as an SRE, Observability Engineer, or equivalent role. - Practical experience with OpenTelemetry, or similar instrumentation tools. - Experience in Kubernetes, Helm, Terraform, and ArgoCD. - Experience designing and managing telemetry pipelines (metrics/logs/traces), exporters, and sidecars. - Product-oriented mindset with a bias for automation and a “you build it, you run it” culture. - Fluency in English. We Value: - Knowledge of APM and distributed tracing solutions. - Experience with FinOps practices applied to observability. - Hands-on involvement in replacing legacy monitoring stacks. - Experience with Cloud environments (Azure preferred). - Contributions to open-source observability tools. - Knowledge in Java development and applications instrumentation. - Expertise in performance monitoring, alerting, dashboarding, and root cause analysis. What do we expect from you? - Design, implement, and maintain observability solutions covering metrics, logs, traces, and RUM. - Work with tools such as Grafana Cloud, Tempo, Loki, Mimir, Alloy, and OpenTelemetry. - Build reliable alerting and monitoring pipelines based on SLOs/SLAs, focusing on low-maintenance automation. - Ensure the health and integrity of observability data flows from instrumentation to dashboards. - Collaborate with development and operations teams to embed observability by design into the software lifecycle. - Define and promote best practices and standards for observability across the organization. - Support the modernization of observability by replacing and evolving legacy monitoring and alerting solutions. - Monitor observability-related costs and contribute to FinOps efforts by identifying optimization opportunities. 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

AI Engineer

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: - Strong software engineering skills in Python and SQL. - Experience building GenAI applications, assistants, agents, or AI-enabled workflow automation. - Hands-on experience with Azure AI services, Azure AI Foundry, or comparable AI platforms. - Understanding of RAG, prompt and context engineering, tool calling, evaluation, orchestration, and responsible production operation of AI systems. - Experience working with APIs, cloud-native services, data pipelines, and enterprise integration patterns. - Comfortable using GenAI software engineering tools such as GitHub Copilot, Cursor, or OpenCode. We Value - Experience with Microsoft Agent Framework, LangChain, MCP, or comparable agent frameworks. - Experience with agentic workflow builders, dashboards, or user-facing AI applications. - Experience with Snowflake, vector databases, observability tooling, or LLM gateway patterns. What do we expect from you? - Build AI applications, assistants, agents, and workflow automation components using modern GenAI engineering patterns. - Design and implement integrations with Azure AI services, Azure AI Foundry, APIs, enterprise systems, data platforms, and internal tools. - Develop retrieval, tool-use, orchestration, evaluation, monitoring, and guardrail components for production AI solutions. - Work with data engineers and data scientists to connect models, prompts, workflows, and data pipelines into reliable end-to-end solutions. - Support the implementation of agentic workflows that can be reused by country teams. - Improve developer experience, engineering standards, reusable templates, and production readiness for AI software 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. 2 years

Main skills

Data Engineer

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 Data Engineer with: - Strong experience with Python, SQL, data modelling, ETL/ELT development, and production data pipelines. - Experience with cloud-native data engineering, ideally on Azure, with practical AWS exposure as a plus. - Experience with Snowflake or comparable cloud data platforms. - Understanding of data quality, orchestration, observability, access management, and governance in enterprise environments. - Ability to collaborate with data scientists, AI engineers, business stakeholders, and local IT teams in international settings. - Comfortable using GenAI software engineering tools such as GitHub Copilot, Cursor, or OpenCode to accelerate development. We Value - Experience with Iceberg, AWS Glue, Spark, Databricks, or similar data engineering technologies. - Experience with logistics, parcel operations, customer feedback, route, depot, or sales data. - Exposure to AI feature stores, vector databases, retrieval pipelines, or data preparation for GenAI applications. What do we expect from you? - Design, build, and operate enterprise-grade ETL and ELT pipelines for AI, analytics, reporting, and agentic workflow use cases. - Create clean, documented, reusable data products from operational, customer, logistics, sales, and other data sources. - Implement data quality checks, monitoring, lineage, metadata, and reliability patterns to make datasets trustworthy and production-ready. - Support integrations between Azure-based AI services, Snowflake, APIs, file-based sources, and selected AWS data services where needed. - Work with business and AI teams to translate use case requirements into data models, pipelines, and serving layers. - Collaborate with local IT and data owners to onboard new data sources while respecting data protection, access control, and governance 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. 2 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

Lisbon (Hybrid)

Experience

Min. 3 years

Main skills

Senior Performance & Resilience Testing 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 Performance & Resilience Testing Consultant with: - Bachelor’s degree in computer engineering or an equivalent qualification. - Strong expertise in Charles Proxy or equivalent tools (e.g., mitmproxy), including: Rewrite rules, Breakpoints, Map Local / Map Remote, SSL Proxying and Network throttling and traffic manipulation. - Experience in mobile application testing (iOS and Android). - Experience analyzing API traffic between mobile applications and backend services. - Knowledge of client-side resilience testing, including: Network drops, API errors, Timeouts, Server crashes and Validation of retry mechanisms and error handling. - Experience analyzing logs, response times, and waterfall views to measure manual load time (i.e., the time required for a screen to become usable). - Experience producing structured test evidence, including test case matrices with Pass/Fail results and Go/No-Go conclusions. - Ability to work autonomously and operate effectively in partially defined environments. - Strong attention to detail in test documentation and reporting. - Ability to collaborate and engage in technical discussions with Development teams. What do we expect from you? - Design and execute performance and resilience testing scenarios for mobile and web applications. - Perform traffic manipulation and network variability testing using Charles Proxy or equivalent tools. - Validate client-side resilience under failure conditions, including network interruptions, API errors, timeouts, and server failures. - Analyze application logs, response times, and waterfall data to assess application performance and usability. - Evaluate retry logic and error-handling mechanisms. - Produce structured testing evidence, including Pass/Fail assessments and Go/No-Go recommendations. - Document test execution results and findings with a high level of accuracy and rigor. - Collaborate with Development teams to discuss findings, identify issues, and support resolution activities. 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

Oeiras (Hybrid)

Experience

Min. 4 years

Main skills

Site Reliability Engineer

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 Site Reliability Engineer with: - Solid background as a Site Reliability Engineer, DevOps Engineer, or Systems Engineer managing production environments in the cloud. - Strong operational experience with public cloud platforms, particularly Microsoft Azure. - Experience with identity management frameworks (Azure Active Directory / EntraID, SSO, user permissions) and implementing security tools (EDR, vulnerability scanners). - Proficiency with Terraform for state management and modular infrastructure deployments and Ansible for automated configuration, patching, and server management. - Strong autonomy and critical thinking skills, with a focus on collaboration and ability to work in cross-functional teams. - Excellent communication skills (written, listening, and speaking), a collaborative mindset, and a proactive attitude. - Fluency in English. We Value - Experience with container orchestration platforms (Kubernetes / AKS). - Proficiency in CI/CD pipeline management using GitLab and GitLab CI/CD. - Familiarity with the Atlassian suite, particularly JSM (Jira Service Management) for incident, request, and workflow tracking. - Background in observability stacks (Prometheus, Grafana, Loki). - Relevant certifications such as Certified Azure Administrator (AZ-104). What do we expect from you? - Collaborate closely with internal and external stakeholders, developers, and managers to ensure timely deliverables. - Develop, maintain, and scale configuration management and automated provisioning using Ansible across cloud virtual machines and hybrid environments. - Build, secure, and operate scalable infrastructure on public cloud platforms (predominantly Azure), managing compute instances, networking, and storage. - Partner tightly with the security team to identify vulnerabilities, execute mitigation strategies, install security components like EDR, and ensure compliance standards are met across all managed systems. - Administer and optimize identity management systems, including Azure Active Directory / EntraID, user permissions, and SSO configurations, ensuring secure and seamless access. - Write, review, and refactor IaC modules using Terraform within a structured Git repository model. - Automate provisioning, configuration and operational recovery with a reliability-first mindset - Integrate robust monitoring and logging stacks to ensure high availability, troubleshoot complex infrastructure incidents, and participate in continuous service reliability operations. - Maintain cost-awareness and resource tagging policies to support platform financial governance (FinOps). - Participate in the 24/7 rotational hotline to maintain system resilience. 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

Leiria (Hybrid)

Experience

Min. 3 years

Main skills

Senior MERN Fullstack Developer

Location

Lisbon (Hybrid)

Experience

Min. 4 years

Main skills

AI Data Engineer

About Us We’re more than a software company. We’re a team of visionaries turning bold ideas into real-world impact. Here, raw data becomes the foundation for groundbreaking AI and analytics solutions. From building data pipelines to scaling infrastructure, we make sure data flows seamlessly, securely, and smartly. Why Us? 🧠 A culture of innovation — Shape the future of data engineering. 🌍 Cross-functional collaboration — Engineers, data scientists, product, all working together. 🎓 Continuous learning — Training, mentorship, and growth opportunities. 💰 Competitive salary and benefits — We value your expertise. 🚀 Clear career progression — Build your path, not barriers. 🎉 A team worth joining — Knowledge sessions, hackathons, and team trips. What are we looking for? We’re looking for a Data Engineer to design, build, and optimize our next-gen data infrastructure. If you love working with data pipelines, cloud architectures, and scalable systems — and want to power AI products with clean, reliable data — this is the role for you. What you’ll be doing Designing and building scalable ETL/ELT pipelines Working with modern data stacks (Spark, Airflow, dbt, Kafka, etc.) Managing data storage solutions (SQL/NoSQL, data lakes, warehouses, and vector DBs) Deploying cloud-native data solutions on AWS or Azure Ensuring data quality, governance, and security best practices Collaborating with Data Scientists and Analysts to support ML and BI needs Monitoring and optimizing system performance and costs The skills we need ✔️ Strong Python and SQL skills ✔️ Hands-on experience with ETL/ELT, data warehouses, and orchestration frameworks ✔️ Familiarity with distributed computing (Spark, Databricks, or similar) ✔️ Experience with cloud platforms (AWS or Azure) ✔️ Knowledge of containerization (Docker, Kubernetes) ✔️ Strong problem-solving and debugging skills 🎯 Bonus points if you’ve worked with real-time data pipelines, streaming data, or vector DBs Are you ready? If you’re ready to build the data backbone of tomorrow’s AI — and grow with a team that pushes boundaries — then BySix is where you belong. Note: BySix is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees — regardless of who you are or where you come from. You belong here.

Location

Lisbon

Experience

Min. 3 years

Main skills

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