Compartilhando minha implementação do serviço de tradução:

Depois de aproveitar várias ideias daqui, como a do Rodrigo e a do Mateus, e também depois de implementar minha própria solução que acredito ter ficado bem concisa e já estar aplicando o Single Responsibility Principle, queria compartilhar o que fiz:

Dentro de services e dentro de translate:

package br.com.floresdev.screenmatch.service.translate;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;

@JsonIgnoreProperties(ignoreUnknown = true)
public record TranslationData(TranslationResponseData responseData) {
}

package br.com.floresdev.screenmatch.service.translate;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;

@JsonIgnoreProperties(ignoreUnknown = true)
public record TranslationResponseData(String translatedText) {
}

package br.com.floresdev.screenmatch.service.translate;

import br.com.floresdev.screenmatch.service.DataConverterService;

import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;

public class TranslationService {

    // Método recebe o texto + a linguagem a ser traduzida (seguindo o padrão ISO 639-1)
    public static String getTranslation(String text, String language) {
        text = URLEncoder.encode(text, StandardCharsets.UTF_8);
        String langpair = URLEncoder.encode("autodetect|" + language, StandardCharsets.UTF_8);
        String url = "https://api.mymemory.translated.net/get?q=" + text + "&langpair=" + langpair;
        return DataConverterService.convertData(url, TranslationData.class).responseData().translatedText();
    }

}

Dentro de application, UserInterface.java:

package br.com.floresdev.screenmatch.application;

import br.com.floresdev.screenmatch.model.EpisodeModel;
import br.com.floresdev.screenmatch.model.SeasonDataModel;
import br.com.floresdev.screenmatch.model.SeriesModel;
import br.com.floresdev.screenmatch.service.DisplayService;
import br.com.floresdev.screenmatch.service.EpisodeService;
import br.com.floresdev.screenmatch.service.SeasonService;
import br.com.floresdev.screenmatch.service.SeriesService;

import java.util.List;

public class UserInterface {

    private final UserInteraction userInteraction;
    private final SeriesService seriesService;
    private final SeasonService seasonService;
    private final EpisodeService episodeService;
    private final DisplayService displayService;

    public UserInterface(UserInteraction userInteraction, SeriesService seriesService,
                         SeasonService seasonService, EpisodeService episodeService, DisplayService displayService) {
        this.userInteraction = userInteraction;
        this.seriesService = seriesService;
        this.seasonService = seasonService;
        this.displayService = displayService;
        this.episodeService = episodeService;
    }

    public void start() {
        String repeat = "y";
        while (repeat.equals("y")) {
            displayService.showMenu();

            String seriesName = userInteraction.getSeriesName();
            SeriesModel series = seriesService.getSeriesBySeriesData(seriesService.getSeriesDataByName(seriesName));
            String fullAddress = seriesService.getFullAddress(seriesName);

            int chosenOption = userInteraction.getChosenOption();
            switch (chosenOption) {
                // código omitido
                case 9:
                    // No meu caso, a opção 9 é a correspondente pra uma opção de traduzir a sinopse pra linguagem escolhida, daí criei um novo construtor em SeriesModel pra receber outro objeto SeriesModel, reaproveitar os membros e repassar a linguagem escolhida pra traduzir
                    displayService.showSeries(new SeriesModel(series, userInteraction.getTranslationLanguage()));
                    break;
                default:
                    System.out.println("Invalid chosen option! Please, follow the correct pattern of choice and " +
                            "try again.");
                    start();
            }
            repeat = userInteraction.getRepetitionValue();
        }
    }
}