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Software Engineer (Internal tools)

Hybrid in Barcelona·Full-time·Added yesterday (last checked 2 Nov)

Smadex

16 open roles

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Our summary

Work mode: Hybrid, Barcelona
Contract: Full-time
Benefits: Meal vouchers, gym access

Visa options

The ad rules out sponsorship
Per the ad: “Please note that we do NOT provide VISA sponsorship. Candidates without a legal permit to work in Spain won't be considered.”

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Skills

Nice to have

Automation

Requirements

What we're looking for

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.

Pay & benefits

What you'll get

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!

The role

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 join our 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'll do

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.

About Smadex

Smadex is a Madrid-based advertising technology company specializing in programmatic mobile advertising and performance marketing. The company provides a demand-side platform (DSP) that enables advertisers to run targeted campaigns across mobile apps and web, with a strong focus on data-driven optimization and creative innovation. Smadex operates globally, with a team of over 100 professionals serving clients across Europe, the US, and other international markets.

Smadex's headquarters and main engineering hub are in Madrid, Spain, making it a key player in the local AdTech ecosystem. The company is known for its collaborative, data-centric culture and invests heavily in machine learning, data science, and creative technology. For international professionals, Smadex offers the opportunity to work in a fast-growing, global-facing company in the heart of Spain, with roles spanning engineering, data science, product, and creative strategy.

Industry: AdTech
Founded: 2011
Employees: 100–500
Headquarters: Madrid, Spain
In Spain: Madrid

Good to know if you are moving

Smadex is headquartered in Madrid, Spain, offering international professionals the chance to work in a vibrant European capital with a growing tech scene.
The company operates globally, with clients and partners across Europe, the US, and Asia, providing exposure to international markets.
Smadex focuses on data-driven advertising, making it an attractive employer for data scientists, machine learning engineers, and product managers.
The company has a strong emphasis on creative technology, with roles like Creative Technologist and Game Developer for playable ads, offering unique opportunities in the AdTech space.
Smadex is a mid-sized company, allowing employees to have a significant impact on products and processes.

In their own words

Additional information

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! And, if you are ready to take your career to the next level and tackle engineering challenges at a global scale, we encourage you to apply!

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

All open roles at Smadex