Software Engineer Lead

About Lumenalta

At Lumenalta, we partner with forward-thinking organizations to build technology solutions that scale, delight users, and accelerate business growth. Our global teams bring curiosity, commitment, and technical excellence to every project. We value transparency, autonomy, and impact, empowering every team member to do their best work.

About the Role

We are seeking a hands-on Senior Tech Lead for an ongoing modernization project with a major enterprise organization. In this role, you will help architect and deliver distributed systems that operate at high scale and carry high business complexity, built with Java, Spring, Kafka, PostgreSQL, and React on AWS. This engagement calls for a leader who excels at wearing multiple hats: establishing technical vision, delivering production code, owning the reliability of the systems in production, unblocking engineering efforts, and serving as a key technical advisor for our client.

This is a client-facing role. You will work directly with client stakeholders on demanding, high-pressure deliveries, and you will be the one driving the team through them. If you are a seasoned engineer who thrives on active building while leading teams through challenging deliveries, this opportunity is ideal for you.

What You'll Be Doing

• Technical leadership. Own the technical direction of the platform, making sound architecture and design decisions for distributed systems at scale and keeping the team aligned on standards, patterns, and quality.
• Hands-on development. Design and build high-throughput backend services with Java and Spring Boot, and contribute to React frontend work when the team needs it.
• Event-driven architecture. Design and build event streaming with Kafka, including topic design, partitioning, consumer patterns, delivery guarantees, and handling of failures and replays.
• Reliability and observability. Own the reliability of the systems you build: define SLOs, put metrics, logging, tracing, and alerting in place, and make performance and capacity visible before they become problems.
• Incident ownership. Lead incident response for the platform, drive root cause analysis, and make sure follow-up fixes land so issues do not repeat.
• Data design. Model and optimize PostgreSQL schemas and queries that support complex business workflows at high volume.
• Team enablement. Lead code reviews, mentor engineers, break down complex work into clear tickets, and help the team deliver predictably sprint over sprint.
• Client partnership. Work directly with client product and engineering stakeholders to refine requirements, explain tradeoffs, and set realistic expectations on scope and timelines, staying steady and clear when deliveries are under pressure.
• Delivery ownership. Partner with QA, DevOps, design, and product to move features from idea to production with strong testing, observability, and release practices.
• Continuity. Ramp up quickly on an established codebase and team, absorb existing context, and keep momentum high through the transition.

What We're Looking For

• 8+ years of professional software engineering experience, including at least 2 years leading development teams as a tech lead or engineering lead.
• Deep, hands-on expertise in Java and the JVM, including concurrency, memory management and garbage collection, and performance profiling and tuning in production.
• Strong experience with the Spring ecosystem (Spring Boot, Spring Data, Spring Security) for building production APIs and services.
• Proven experience designing and operating distributed systems at high scale, including the tradeoffs around consistency, latency, and failure handling.
• Hands-on production experience with Kafka or comparable event streaming platforms.
• Hands-on production experience with AWS and cloud-native deployment.
• Experience owning reliability and observability for production systems, including monitoring, alerting, tracing, and leading incident response.
• Strong experience with PostgreSQL, including schema design, query optimization, and data migrations.
• Solid experience building modern frontends with React and TypeScript or JavaScript.
• A track record of making architecture decisions on complex business applications and documenting them clearly.
• Experience in client-facing roles, working directly with client or business stakeholders in a consulting or product-driven setting.
• Comfort navigating challenging, high-pressure deliveries while driving a team, balancing leading, coding, and coordinating.
• Advanced English and the ability to communicate clearly with engineers and non-technical stakeholders in a distributed, remote team.
• Based in Latin America, with full overlap with U.S. Eastern business hours.

Nice to Have

• Experience modernizing or replacing legacy systems, including data migration strategies.
• Familiarity with CI/CD pipelines, containerization with Docker, Kubernetes, and infrastructure as code.
• Experience with observability tooling such as Datadog, Prometheus, Grafana, or OpenTelemetry.
• Experience with automated testing practices across backend and frontend, such as JUnit, Jest, or Cypress.
• A degree in Computer Science, Engineering, or a related field.

Why Lumenalta is an amazing place to work at

At Lumenalta, you can expect that you will:

• Be 100% dedicated to one project at a time so that you can innovate and grow.
• Be a part of a team of talented and friendly senior-level developers.
• Work on projects that allow you to use leading tech.

Location

This is a fully remote position open only to candidates based in Latin America; candidates must be able to work with full overlap with U.S. Eastern business hours to ensure effective collaboration with client and team schedules.

Application Deadline

Applications will be accepted until November 23, 2026. Candidates can expect feedback by November 27, 2026.