Software Engineer (Internal tools)

Smadex S.L.U.; Barcelona; On-site; EUR 45,000 - 70,000; Full time

Benefits offered by this job

Great compensation package

Barcelona location in the heart of the

Hybrid work (2 days from home)

LinkedIn Learning subscription

Meal vouchers

Monthly gym allowance

Team-building activities

Ping-pong and arcade

Job summary

Smadex S.L.U. is seeking a Software Engineer to join the Platform Experience team in Barcelona. You will build internal tools, workflows, and integrations to improve efficiency across HR, Marketing, Finance, Sales, and Operations.

This role focuses on pragmatic, end-to-end solutions that enhance business processes with simple, durable technical designs. You will work with stakeholders to translate requirements into practical plans, evaluate build-vs-buy options, and deliver secure,

Qualifications

• Demonstrated ability to build end-to-end internal tools and integrations.
• Experience shaping internal workflows and automations.
• Strong communication with technical and non-technical stakeholders.

Responsibilities

• Build internal tools, workflows, and lightweight apps for engineering and non-engineering teams.
• Design integrations between internal systems and third-party platforms.
• Collaborate with stakeholders to understand processes and business needs.

Skills

Full-stack development

APIs & integrations

Stakeholder communication

Ownership mentality

Frontend + Backend

Tools

Adobe Sign

Google Workspace

Salesforce

HubSpot

Node.js

Python

SQL

Job description

Smadex is a performance advertising engine for mobile apps, enabling the world's leading marketers to grow across Mobile and Connected TV (CTV). Powered by AI models trained on real campaign outcomes, Smadex delivers profitable growth at scale. Headquartered in Barcelona, with teams across the Americas, EMEA, and APAC, Smadex is a business unit of Entravision (NYSE: EVC).

About the role

We are looking for a Software Engineer to joinour Platform Experience team. This role will focus on building internal tools, integrations, workflows, and business solutions for teams across the company, such as HR, Marketing, Finance, Sales, and Operations.

The ideal candidate is a pragmatic, end-to-end engineer who is comfortable working with greenfield ideas, understands how to translate business problems into simple technical solutions, and can decide when to build, integrate, automate, or leverage existing tools.

This is not a traditional product engineering role focused on external customers. It is a high-impact internal role focused on improving company efficiency through well-scoped, maintainable solutions.

What you will do

• Build internal tools, workflows, and lightweight applications for engineering and non-engineering teams.
• Design and implement integrations between internal systems and third-party platforms.
• Work directly with stakeholders to understand processes, pain points, and business needs.
• Translate ideas and suggestions into clear technical plans and pragmatic solutions.
• Evaluate build-vs-buy tradeoffs and recommend the simplest viable approach.
• Improve or automate manual processes involving spreadsheets, approvals, documents, CMSs, email flows, and internal operations.
• Deliver end-to-end solutions across frontend, backend, integrations, and data flows when needed.
• Help define lightweight intake, scoping, and ownership practices for internal requests.
• Ensure solutions are maintainable, secure, and appropriately documented.
• Partner with the broader engineering group to align on technical standards and shared capabilities.

What we are looking for

• 1+ years of experience as a Software engineer.
• Strong full-stack skills and the ability to build end-to-end solutions with limited supervision.
• Experience working with APIs, integrations, and business workflows.
• Good judgment when deciding between custom development, SaaS, automation tooling, or simple manual solutions.
• Comfort working in ambiguous environments where requirements are not fully defined upfront.
• Strong communication skills with both technical and non-technical stakeholders.
• A pragmatic mindset: able to deliver useful solutions without overengineering.
• Ability to understand business processes and identify where technology can genuinely improve efficiency.
• Ownership mentality: able to move initiatives forward, identify blockers, and make progress without constant direction.

Nice to have

• Experience building internal tools or operational platforms.
• Experience with CMS platforms, document workflows, or systems such as Adobe Sign, Google Workspace, Salesforce, HubSpot, or similar tools.
• Familiarity with automation platforms or workflow tools.
• Experience with frontend frameworks such as Angular.
• Experience with Node.js, Python, SQL, and REST APIs.
• Experience evaluating low-code / no-code options when appropriate.
• Exposure to cloud environments and deploying internal services.

What We Offer

• Join a highly motivated and talented team in a fun and friendly work environment.
• Opportunity to work in a complex environment and gain experience from it.
• Directly add value to the business with the projects that you are assigned.
• Great compensation package.
• Top location at the heart of Barcelona with a rooftop terrace, Barbeque, and a fully stocked fridge.
• Great work-life balance: work from home (2 days per week) and flexible hours.
• Professional development with a LinkedIn Learning subscription and other training opportunities.
• Meal vouchers - Ticket Restaurant monthly allowance.
• Monthly gym allowance: Choose between DiR and Wellhub
• Monthly TGIF (Thank God It's Friday) events and regular team-building activities.
• Ping-pong table and arcade machine.
• And more!

If you want to know more about us visit our website Smadex.com , and for a sneak peek of the cool stuff we build check this video out!

Please note that we do NOT provide VISA sponsorship. Candidates without a legal permit to work in Spain won't be considered.