Java Jobs in Rio de Janeiro.
All active Java roles based in Rio de Janeiro.
Pick a job to read the details
Tap any role on the left — its description and apply link will open here.
About Telnyx
Telnyx is an industry leader that's not just imagining the future of global connectivity—we're building it. From architecting and amplifying the reach of a private, global, multi-cloud IP network, to bringing hyperlocal edge technology right to your fingertips through intuitive APIs, we're shaping a new era of seamless interconnection between people, devices, and applications.
We're driven by a desire to transform and modernize what's antiquated, automate the manual, and solve real-world problems through innovative connectivity solutions. As a testament to our success, we're proud to stand as a financially stable and profitable company. Our robust profitability allows us not only to invest in pioneering technologies but also to foster an environment of continuous learning and growth for our team.
Our collective vision is a world where borderless connectivity fuels limitless innovation. By joining us, you can be part of laying the foundations for this interconnected future. We're currently seeking passionate individuals who are excited about the opportunity to contribute to an industry-shaping company while growing their own skills and careers.
Telnyx Edge Compute is our serverless platform — it lets developers deploy Go, Python, and Java functions directly onto Telnyx's global network, running application logic milliseconds away from end users. It's how our customers handle webhooks, voice and messaging events, and AI inference at the edge, without touching a server.
We're looking for a Go engineer to join the Edge Compute squad and help us build the platform behind it. You'll be working on the runtime, the deployment pipeline, the CLI, and the control plane that makes "write a function, deploy it globally" feel effortless. The systems you build will be used by every developer on Telnyx — so the bar for reliability, performance, and developer experience is high.
What you'll do
- Design and build the Go services that power our serverless runtime, function deployment pipeline, and global control plane.
- Make the platform feel great to use — clean APIs, a sharp CLI, predictable behaviour, useful error messages. Developer experience is a feature, not an afterthought.
- Diagnose and fix latency, throughput, and reliability issues across a system that spans data centres around the world.
- Build automation and tooling that lets us operate the platform safely at scale.
- Participate in on-call for the systems you build.
What we're looking for
- 2-5 years of professional backend software development experience.
- Proficiency in Go, or strong experience in a comparable backend language (Rust, Java, C++) with a real interest in writing Go day-to-day.
- Solid grounding in distributed systems — you've debugged a service-to-service problem in production and know what kinds of things go wrong at the edges.
- Experience running services in a high-availability environment, including being on-call.
- Comfort designing APIs that other engineers (internal or external) will actually use.
- Working knowledge of relational databases — when to reach for one, and when not to.
Bonus points for
- Experience building developer tools, platforms, runtimes, or anything where your users are other engineers.
- Familiarity with serverless or edge-compute platforms (Cloudflare Workers, Fastly Compute, Lambda, Fly.io, Deno Deploy, etc.).
- Experience with our stack: Docker, Kubernetes, Consul, Prometheus, RabbitMQ, Jenkins.
- Experience operating systems across multiple regions or data centres.
- Open source contributions, particularly in the Go ecosystem.
Ready to apply?
Apply to Telnyx
Senior Software Engineer, Core Experiences - Rio de Janeiro, Brazil
Mission
Speechify is the easiest way to listen to the world’s information. Articles on the web, documents in the cloud, books on your phone. We absorb it all and let you listen to it at your desk, on the go, at your own speed, and with tools that make learning easier, deeper, and faster.
What streaming services have done for audio entertainment, we’re doing for audio information. And whatever we’re doing seems to be working. We’re #1 in our category, and experiencing exponential growth.
Overview
We're looking for a Senior Software Engineer to join our Core Experiences Team. This team builds and maintains the foundational services and SDKs that power Speechify’s product experience across platforms. It's a critical role for someone who enjoys working at the intersection of product and infrastructure, thinks strategically, and is passionate about designing clear, reliable APIs and simple systems that directly enhance the user experience.
What You’ll Do
- Collaborate with Speechify’s Product Teams to scope projects, find ways to reduce scope to get faster feedback from customers, navigate the integration/UX tradeoffs relevant to different product teams, and deliver solutions via our cross-platform SDK
- Optimize existing functionality to ship things like faster loading and more intelligent parsing by designing more efficient abstractions and improving our algorithms
- Ship cloud functions, lightweight backend services, and jobs using Kotlin
An Ideal Candidate Should Have
- Systems thinking. You know that optimizing a system requires end-to-end design, and you believe simplicity is valuable.
- Speed. You work quickly to generate ideas and options and know how to decide which things can ship now and what things need time
- Focus. We’re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
- Collaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMs
- Preferred Tech Stack:
- Kotlin Multiplatform (Java experience is OK but role is Kotlin Multiplatform)
- Prior experience with GCP is a plus
What We Offer
- A fast-growing environment where you can help shape the company and product.
- An entrepreneurial-minded team that supports risk, intuition, and hustle.
- A hands-off management approach so you can focus and do your best work.
- An opportunity to make a big impact in a transformative industry.
- Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.
- Opportunity to work on a life-changing product that millions of people use.
- Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.
- Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio.
Think you’re a good fit for this job?
Tell us more about yourself and why you're interested in the role when you apply.
And don’t forget to include links to your portfolio and LinkedIn.
Not looking but know someone who would make a great fit?
Refer them!
Speechify is committed to a diverse and inclusive workplace.
Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.
Ready to apply?
Apply to Speechify
Lead IT Engineer - Productivity Systems
About Us
Nu is one of the largest digital financial platforms in the world, with more than 122 million customers across Brazil, Mexico, and Colombia. Guided by our mission to fight complexity and empower people, we are redefining financial services in Latin America and this is still just the beginning of the purple future we're building.
Listed on the New York Stock Exchange (NYSE: NU), we combine proprietary technology, data intelligence, and an efficient operating model to deliver financial products that are simple, accessible, and human.
Our impact has been recognized by global rankings such as Time 100 Companies, Fast Company’s Most Innovative Companies, and Forbes World’s Best Bank. Visit our institutional page https://international.nubank.com.br/careers/
About the Role
We are looking for an experienced engineer who thrives on solving "meta-problems"—fixing the tools and processes that other teams rely on. You will be responsible for designing and implementing high-leverage automation, managing enterprise tool rollouts (e.g., Postman, n8n), and defining the technical governance for our next-generation AI workflows.
Key Responsibilities
- Enterprise Automation & Platform Engineering:
- Lead the implementation and maintenance of automation platforms (e.g., n8n) to orchestrate workflows across business units.
- Design and optimize critical communication infrastructure (e.g., AWS SES, email delivery resilience) to ensure high availability for internal and transactional messaging.
- AI & "Vibe Coding" Governance:
- Drive the technical strategy for AI adoption within engineering workflows.
- Develop governance frameworks to ensure safe, compliant, and effective use of AI coding assistants and agents.
- Build "Minimum Control Platforms" that balance developer freedom with security and operational risk requirements.
- Internal Tooling Standards:
- Define and enforce usage standards for developer tools (e.g., Postman for API lifecycle), ensuring consistency across squads.
- Conduct "Discovery Design" for new internal products, ensuring they are inclusive and scalable across different technical frameworks.
- Cross-Functional Technical Leadership:
- Act as a technical reference for the domain, influencing architectural decisions beyond the immediate team. Mentor senior engineers and partner with stakeholders (ITSec, Privacy) to align technical solutions with company policies.
What are we looking for?
Technical Skills
-
Solid Software Engineering Background: Proficiency in modern programming languages (Clojure, Java, or Python preferred) and distributed systems.
-
Infrastructure & Cloud: Strong hands-on experience with AWS (specifically services like SES, Lambda, IAM) and Infrastructure-as-Code (Terraform/CloudFormation).
-
Automation Mindset: Experience with workflow automation tools (n8n, Zapier, or custom orchestration engines) and API integration.
-
AI/LLM Familiarity: Interest or experience in integrating LLMs/AI agents into developer workflows (e.g., Cursor, Copilot, internal AI agents).
- Advanced English
Behavioral & Strategic Skills
- Governance-Aware: You understand that "efficiency" must be balanced with "security." You can design systems that are safe by default without destroying developer velocity.
- Problem Solver: You are comfortable debugging opaque infrastructure issues (like email deliverability drops) one day and writing a strategic policy document the next.
- Multiplier: You enjoy documenting your work, creating "Golden Paths" for other engineers, and teaching others how to use the tools you build.
Our Benefits
- Chance of earning equity at Nubank
- Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
- Public Transportation Commuting Benefit (Vale-Transporte)
- NuCare – Psychological, Financial and Legal Assistance Program
- Life Insurance
- Medical Plan
- Dental Plan
- NuLanguage – Language Course Program
- Nucleo - Our learning platform of courses
- Extended Parental Leave
- Daycare Allowance
- Parental Consultancy
- Work-from-home Allowance
- Gym Partnerships
- 30 days of paid vacation
- Relocation Assistance Package, if applicable
Work Model for this Role
Our hybrid work model brings us to the office at least twice a week, on strategic days designed to maximize team connection and collaboration. For more details, visit https://building.nubank.com/nu-hybrid-work-model/
Ready to apply?
Apply to Nubank
Somos o acelerador que impulsiona o crescimento na Ibero-América, combinando a excelência global em engenharia da EPAM com a experiência regional e a proximidade cultural da NEORIS. Ajudamos as organizações a escalar, modernizar e avançar em sua transformação digital por meio de soluções em Cloud, Data & Analytics, Inteligência Artificial, Cibersegurança, Automação Inteligente, Consultoria Estratégica e Engenharia de Software.
Respaldados por mais de 60.000 profissionais em mais de 55 países e por um sólido modelo Nearshore, conectamos capacidades globais com confiança local para gerar impacto real, crescimento sustentável e resultados de alto valor para nossos clientes.
Acreditamos que a diversidade impulsiona a inovação. Por isso, todas as nossas oportunidades estão abertas para todas as pessoas, independente de gênero, raça, idade, identidade, orientação ou condição.
Formato de contratação: CLT + Benefícios
Descrição do cargo
Estamos em busca de um(a) Arquiteto(a) de Soluções para atuar no desenho, validação e evolução de arquiteturas corporativas, garantindo alinhamento entre as necessidades do negócio, requisitos técnicos e padrões de governança. Este(a) profissional será responsável por liderar decisões técnicas, apoiar times de desenvolvimento, orientar boas práticas e assegurar a construção de soluções escaláveis, resilientes e seguras. Se você possui essa experiência, deseja compor nosso Banco de Talentos e ser considerado para oportunidades futuras, inscreva-se e mantenha seu perfil atualizado.
Principais Responsabilidades:
Arquitetura & Design de Soluções
- Projetar, documentar e validar arquiteturas de sistemas, microsserviços e integrações corporativas.
- Avaliar requisitos funcionais e não funcionais, garantindo aderência a padrões de qualidade, segurança, disponibilidade e performance.
- Definir e manter padrões de arquitetura, modelos de referência e guias de boas práticas.
- Orientar equipes no uso de padrões de integração, APIs, mensageria, cloud e melhores práticas de engenharia.
Governança & Estratégia
- Atuar como guardião(ã) das diretrizes arquiteturais, contribuindo para evolução tecnológica e redução de dívidas técnicas.
- Realizar análises de impacto, avaliações de solução (Solution Assessment) e Estudos de Viabilidade Técnica.
- Apoiar o roadmap tecnológico, propondo inovações, modernização e otimização de plataformas existentes.
- Participar de comitês de arquitetura e apoiar tomada de decisão executiva.
Liderança Técnica & Suporte aos Times
- Colaborar com Product Owners, Tech Leads, SREs, Engenharia e Negócio para garantir soluções robustas.
- Acompanhar implementações críticas, fornecendo direcionamento técnico durante todo o ciclo de vida.
- Realizar validação de código, alinhamento técnico e revisão de arquitetura com as equipes.
- Facilitar discussões técnicas, promover troca entre times e fomentar boas práticas de engenharia.
Tecnologia & Inovação
- Atuar com arquiteturas baseadas em nuvem (AWS, Azure ou GCP), containers e orquestração
- Avaliar e propor soluções utilizando padrões modernos: APIs REST, GraphQL, filas/eventos, microsserviços, CI/CD, observabilidade.
- Apoiar times na adoção de ferramentas de monitoração, segurança e automação.
- Participar de provas de conceito (POCs) para validar novas tecnologias.
Requisitos
- Ensino superior em Ciência da Computação, Engenharia de Software, Sistemas de Informação ou áreas correlatas.
- Desejável pós-graduação/MBA em Arquitetura de Software, Engenharia de Software, Segurança ou áreas afins.
- Experiência sólida em arquitetura de software, engenharia ou desenvolvimento de sistemas.
- Domínio em arquiteturas distribuídas, microsserviços, padrões de integração e modelagem de dados.
- Conhecimento em tecnologias como Cloud: AWS, Azure ou GCP.
- Containers: Docker, Kubernetes.
- Integração: APIs REST, mensageria (Kafka, RabbitMQ), Webhooks.
- Desenvolvimento: Java, C#, Node.js, Python (um ou mais).
- Observabilidade: Grafana, Prometheus, New Relic, etc.
- Experiência com pipelines CI/CD, DevOps, automações e versionamento.
- Conhecimento de segurança da informação e práticas de arquitetura segura.
- Capacidade de elaboração de documentos técnicos, diagramas (C4 Model, BPMN, UML).
Desejável
- Certificações em arquitetura (AWS Architect, Azure Solutions Architect, TOGAF, etc.).
- Experiência com ambientes híbridos ou de grande complexidade.
- Vivência com automação, SRE, containers e alta disponibilidade.
- Experiência com integrações legadas e modernização de ambientes.
Oferecemos
- Vale Refeição e Vale Alimentação: Benefícios mensais para suas despesas com alimentação, dentro e fora de casa.
- Previdência Privada: Planejamento de futuro com contribuição complementar à aposentadoria.
- Plano de Saúde: Cobertura médica de alta qualidade para você e seu dependente legal.
- Plano Odontológico: Cuidados odontológicos completos, com ampla rede de atendimento.
- Seguro de Vida: Proteção e segurança para você e seus entes queridos.
- Aulas de Inglês/Espanhol: Incentivo ao aprendizado de idiomas.
- Wellhub: Benefícios e descontos em academias e programas de bem-estar.
- Auxílio Creche: Suporte financeiro para despesas com educação infantil.
- Neoris Global Campus: Plataforma de desenvolvimento com oportunidades contínuas de aprendizado e crescimento profissional.
Te convidamos a nos conhecer em http://www.neoris.com, Facebook, LinkedIn, Twitter o Instagram: @NEORIS.
#LI-BR1
Ready to apply?
Apply to NEORIS