Golang Back End Developer

HORISEN; São Paulo; Remote; BRL 120,000 - 160,000; Full time

Benefits offered by this job

Competitive salary

Development opportunities

Supportive work environment

Job summary

A technology software house is seeking a Mid-level Go Backend Engineer to develop high-throughput microservices. The role focuses on performance and reliability using profiling tools and remote debugging. Candidates should have 2-3 years of backend experience with strong Go fundamentals. This full-time position offers a competitive salary and remote work options in a collaborative work environment that values professional growth.

Qualifications

• 2-3+ years of backend experience, 2+ with Go in production.
• Strong Go fundamentals: concurrency, profiling, performance tuning.
• Proficiency in remote debugging and production troubleshooting.
• Solid testing discipline and GitLab CI/CD experience.

Responsibilities

• Design and operate Go microservices for high-load workloads.
• Profile and optimize code using various tools.
• Write robust unit tests and maintain code coverage.
• Integrate with data/streaming systems like Kafka and MongoDB.

Skills

Go fundamentals

Concurrency

Profiling

Production troubleshooting

Unit testing

GitLab CI/CD

REST/gRPC

Tools

Kafka

Redis

MongoDB

ClickHouse

Docker

Job description

We’re looking for a Mid-level / Mid+ Go Backend Engineer to build and operate high-throughput microservices.

You’ll focus on performance, reliability, and clean design, using profilers and remote debugging to keep services fast and stable in production.

Location

• Remote

We kindly ask you to send your CV in English, as it is the official language of the HORISEN group.

Mid-level / Mid+ Go (Golang) Backend Engineer — High Load & Microservices.

Requirements

• Design, build, and operate Go microservices for high-load, low-latency workloads (REST/gRPC)
• Profile and optimize code (CPU/memory/trace) using pprof, go tool trace, flame graphs
• Write robust unit tests (table-driven) and meaningful benchmarks (go test -bench), keep coverage healthy
• Integrate with data/streaming systems: Kafka, Redis, MongoDB, ClickHouse
• Ship via GitLab CI/CD (pipelines, runners, Docker images); automate quality gates
• Contribute to service observability (metrics/logging/tracing/Prometheus/OpenTelemetry/Jaeger)
• Apply design patterns and clean architecture; participate in code/design reviews

Must have

• 2–3+ years of backend experience, 2+ with Go in production
• Strong Go fundamentals: concurrency (goroutines, channels, context, sync), profiling, performance tuning
• Remote debugging proficiency (Delve) and production troubleshooting skills
• Solid testing discipline (unit tests, benchmarks) and GitLab CI/CD experience
• Practical knowledge of REST/gRPC and at least one of Kafka/Redis/MongoDB/ClickHouse
• Familiarity with design patterns, SOLID/clean architecture, idiomatic Go

Nice to have

• Deeper expertise with Kafka (consumer groups, idempotency, exactly-once patterns), schema registry (Avro/Protobuf)
• ClickHouse performance tuning; Redis as cache/rate-limit/locks; MongoDB schema design
• Observability stacks (Prometheus, Grafana, OpenTelemetry, Jaeger, Loki)
• Impact: own services that process real traffic at scale
• Modern stack, strong engineering culture, code reviews, technical growth

At HORISEN we build a workplace that supports, inspires and encourages our people. We foster a work environment where people are motivated to give their best and feel good about what they do.

Work:

Dynamic work in a company with more than 20 years of experience in a future-oriented industry

Competence:

Opportunity to grow under the mentorship of colleagues with extensive experience and to make a personal contribution

Team:

A powerful mixture of highly experienced professionals and young team members who are motivated, open-minded and easy to cooperate with

Cooperation:

A supportive, non-toxic environment with a safe space to share your ideas and opinions

Workplace:

A modern working environment with everyday refreshments and a good mood

A competitive salary with performance-related improvements and great development opportunities

Chance to contribute to cutting-edge messaging technology development, expand knowledge and master your professional skills

About HORISEN

HORISEN is an award-winning technology software house for retail and wholesale messaging technology. We offer a wide variety of business messaging solutions – feature-rich, carrier-neutral, and sales-driven to messaging companies. With more than two decades of experience and passion for software development, we are revolutionizing messaging business by developing at the edge of technological possibilities.

Seniority level

• Mid-Senior level

Employment type

• Full-time

Job function

• Engineering and Information Technology

Industries

• IT Services and IT Consulting