Lead/Principal Go Developer (AdTech)

Sigma Software; Alicante; Presencial; EUR 90.000 - 120.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Flexible working arrangements

Competitive benefits

Descripción de la vacante

Sigma Software is seeking a Lead/Principal Go Developer to design a high-load, low-latency real-time bidding platform. You will craft back-end services for bidding, optimization, and ad delivery, building agents for real-time decisions and integrating forecasting and observability.

You will collaborate with product, engineering, data, and ad operations to deliver scalable performance advertising capabilities, using OpenRTB, JSON, and protobuf.

Formación

• 7+ years as a Back-End Developer in commercial projects.
• Strong production experience with Golang.
• Designing and building high-load, low-latency distributed systems.
• Hands-on experience with JSON-based integrations and Protobuf.
• Experience with Redis, Aerospike or similar caches and PostgreSQL.
• Ability to deliver reliable, scalable services with observability requirements.
• Upper-Intermediate level of English.

Responsabilidades

• Design and implement core Back-End services for real-time bidding, optimization, and ad delivery workflows.
• Build custom bidding agents for real-time bid decisioning.
• Develop high-load, low-latency components for auction and delivery mechanics.
• Implement pacing, bid-shading, and optimization logic to improve campaign efficiency.
• Design and integrate forecasting for impressions, reach, outcomes, and planning.
• Work with OpenRTB, JSON, protobuf, and other ad-tech protocols.
• Integrate with data pipelines for real-time optimization and reporting.
• Implement observability, monitoring, and troubleshooting capabilities (LGTM/ELK).
• Collaborate with product, engineering, data, and ad operations stakeholders.

Conocimientos

Go

Distributed systems

JSON/Protobuf

PostgreSQL

Caching (Redis/Aerospike)

Observability (ELK LGTM)

English (Upper-Intermediate)

Herramientas

OpenRTB

Protobuf

REST APIs

Descripción del empleo

Are you ready to take on a high-impact role in building cutting-edge advertising technology? We are looking for aLead/Principal Go Developer to join our team and design a high-load, low-latency real-time bidding platform.

At Sigma Software, we deliver innovative, scalable solutions that empower industries and drive measurable results. You will work alongside talented professionals in a culture that values expertise, collaboration, and continuous growth.

Why join us? We offer competitive benefits, flexible working arrangements, and opportunities to work on challenging projects that push the boundaries of technology.

CUSTOMER

Our customer is a globally recognized technology-driven company operating in the digital advertising space. They specialize in delivering scalable, high-performance solutions that empower advertisers to optimize campaigns in real time. With a strong culture of innovation and excellence, they are committed to building platforms that shape the future of programmatic advertising.

PROJECT

The project is a strategic self-service advertising solution designed to make streaming inventory more accessible, measurable, and performance-driven for advertisers of all sizes. It includes a real-time bidding and optimization platform capable of handling high-load, low-latency auction mechanics. The system integrates forecasting.

Job Description

• Design and implement core Back-End services for real-time bidding, optimization, and ad delivery workflows
• Build custom bidding agents for real-time bid decisioning
• Develop high-load, low-latency components supporting real-time auction and delivery mechanics
• Implement proprietary pacing, bid-shading, and optimization logic to improve campaign efficiency
• Design and integrate forecasting capabilities for impressions, reach, outcomes estimation, and campaign planning
• Work with OpenRTB, JSON, protobuf, and other ad-tech protocols and data formats
• Integrate with data and metrics pipelines to support real-time optimization and reporting
• Implement observability, monitoring, and troubleshooting capabilities (LGTM/ELK stack)
• Collaborate with product, engineering, data, and ad operations stakeholders to deliver scalable performance advertising capabilities

Qualifications

• At least 7 years of relevant experience as a Back-End Developer in commercial projects
• Strong production experience with Golang
• Experience designing and building high-load, low-latency distributed systems
• Hands‑on experience with JSON-based integrations, protobuf or similar protocols
• Experience with low‑latency data stores and caching technologies such as Aerospike, Redis, ElastiCache or similar
• Experience with PostgreSQL or similar relational databases
• Experience building production‑grade services with strong reliability, scalability and observability requirements
• Ability to work independently, reason through complex system trade‑offs and contribute to architecture decisions
• At least an Upper‑Intermediate level of English

WILL BE A PLUS

• Understanding of real‑time bidding systems, auction mechanics and AdTech domain
• Understanding of pacing, bid optimization, forecasting or performance advertising delivery mechanics
• Experience working on DSP, SSP, Ad Exchange, ad server or performance marketing platforms
• Experience with integration of LGTM/ELK or similar observability stacks

Additional Information

PERSONAL PROFILE

• Analytical mindset with strong problem‑solving skills
• Ability to work in fast‑paced environments
• Excellent communication skills for cross‑team collaboration
• Self‑motivated and proactive approach to work
• Strong attention to detail and commitment to quality

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